Library · Daily engines · Gear
LibraryFrontier Engineering Library & Visual Radar
Daily Hugging Face model memory radar, Daily Signals, curated gear, and developer toolkit — the learn hub. Interactive instruments live under Lab.
Edge AI & TinyML Hardware Radar
Daily deterministic scan of new GGUF and ONNX releases on Hugging Face — verified file bytes in, datasheet memory ceilings out for Pi 5 8GB/16GB, Orin Nano/NX, Sigma 32GB, Orange/ROCK 16GB, Coral TPU, ESP32-S3, and Teensy 4.1.
Click any board vertex or pill below to inspect model headroom & RAM limits.
LattePanda Sigma (32 GB)
Daily Signals
Daily developer signals across Bluesky & Hacker News — auto-published to /library/daily-signals. Trending pillars re-rank gear below.
Shop & Verified Code Archives
Downloadable standalone C++, Swift, and Python numerical solvers with README provenance and hardware schematics.
Four pillars of engineering craft
Deep-dive research, numerical solvers, and production code walkthroughs — zero fluff, zero synthetic AI content abuse.
On-Device AI & CoreML
Model quantization (GGUF/ONNX/CoreML), ANE latency bounds, fp16 vs int8 compression, and offline vector retrieval.
Audio DSP & Perceptual Math
Direct-Form-II-Transposed biquad cascades, RBJ cookbook coefficient solvers, perceptual audio masking, and real-time Web Audio.
Physics & Symplectic Solvers
Fixed-step 4th-order Runge-Kutta, symplectic velocity Verlet orbital mechanics, Chladni cymatics modal transport, and wave propagation.
Hardware & RF Engineering
HM-10 vs Nordic UART Service framing, directional antenna EM radiation patterns, micro-memory ceilings, and priority preemptive RTOS scheduling.
Playground & Numerical Solvers (37)
Frontier research instruments and interactive simulations. Grounded in real production app kernels, verified against analytical benchmarks.
Quaternion ↔ Euler Converter
The exact head-orientation math running inside MotionLink
Draw → Fourier Epicycles
Any shape, decomposed into spinning circles
Live Earth
Real coastlines, real weather, real ISS orbit
Audio & Acoustics Toolbox
Serious engineering tools for audio, acoustics, DSP, and loudspeaker design
Double Pendulum + Phase Space
Chaotic motion, painted as pure geometry
Biquad Filter Designer
Hear a cascade, not just see a curve
Room Shape Optimizer
Give it a volume, it solves for the shape
Head-Tracked Stereo Pan
Rotate a virtual head, hear the pan move
CoreML Model Size & Quantization Calculator
Exact on-device footprint math, no throughput guesswork
BLE GATT / CSV Frame Visualizer
How raw serial bytes become a CSV row
Agentic DSP Pipeline Step-Through
Record → retrieve → generate → verify → iterate
Chladni Cymatics
Sound made visible — standing wave sand patterns
N-Body Orbital Choreography
Gravity, three bodies, and a stable dance
Conformal Mapping Explorer
Watch a grid warp under a complex function
Lattice Boltzmann Wind Tunnel
A Von Kármán vortex street, computed live
Ray-Matrix Optics Bench
Paraxial rays through lenses, mirrors, and cavities
Gaussian Beam Calculator
Waist, Rayleigh range, divergence, and the full beam envelope
Sun Path & Shadow Calculator
Where the sun is, when it crosses, what it shadows
Quantum Tunneling Simulator
Watch a wave packet leak through a wall
Magnetic Field Line Tracer
Biot–Savart field lines, marched by RK4
Relativistic Starship Journey
1g to the stars, drawn on a Minkowski diagram
PID & MPC Flight Arena
Tune a quadrotor, watch quaternions keep it alive
Microstrip & Signal Integrity Lab
TEM waves, S-parameters, and eye diagrams that bite
Agentic Closed-Circuit Lab
GenUI instruments gated by deterministic solvers — Edge SLM proposes, Zod + registry disposes
FPGA Verilog Live Sculptor
WASM-compiled HDL → LUT map, flashing on violations
WebGPU PINN Training Studio
Watch a neural operator learn Navier-Stokes in your GPU
Visual-Inertial SLAM Arena
EKF meets pixels: track, map, loop-close, snap
Antenna Array & EM Propagation Sandbox
Steer a beam, shimmer RF wavefronts, hear alignment
FEA Structural Dynamics Lab
Von Mises, displacements, creaks, fracture snaps
GaN/SiC Power Electronics & FOC Drive
Space Vector PWM, flux rotation, motor whine to 20 kHz
RTOS Scheduler Visualizer
Tasks, mutexes, ISRs, and deadline tension you can hear
Voice Synthesis DSP Sandbox
Text-to-speech through a live Web Audio DSP rack
Client vs Serverless GPU Benchmarker
Your GPU vs a cloud GPU, measured — never estimated
Edge DB Sync Lab
Place replicas on a world map, watch reads beat writes
Vector Retrieval Recall Lab
Measure the candidates you skip—and the neighbors you lose
RF & Microwave Circuit Bench
S-parameters live on a Smith Chart, hum to pure tone at 50Ω
Edge AI SBC & Hardware Accelerator Explorer
LattePanda vs Jetson Orin vs Coral TPU — latency, TOPS/W & memory bandwidth
Tools & infrastructure we build with
Curated stack. If a listing ever becomes an affiliate relationship, it will be disclosed. See privacy & affiliate disclosure.
Tested Gear & Development Kits
Prices shown were retrieved from the Amazon Product Advertising API on 19 July 2026 and are indicative only — the price and availability on Amazon at the time of purchase apply.
Prices shown were checked against the Amazon product listing on 9 August 2026 and are indicative only — the price and availability on Amazon at the time of purchase apply.
Re-ranked · trending On-device AI · iOS craft · DSP · Audio
Studio148
▲ trending · 62
$496.01trendingKitArty A7: Artix-7 FPGA Development Board for Makers and Hobbyists (Arty A7-35T)
Xilinx Artix-7 XC7A35T with 33k LUTs, 90 DSPs — synthesize Verilog typed here, match reported LUT/FF utilization vs simulated floorplan packing and timing report T_ns slack.
$15.00trendingKitESP32-S3-DevKitC-1-N8R8 Development Board
Official Espressif S3 devkit with 8MB flash + 8MB PSRAM — FreeRTOS playground hardware.
$259.95trendingSBCCanaKit Raspberry Pi 5 Starter Kit PRO — Turbine Black, 8GB RAM, 128GB
Flagship Pi 5 8GB board — Amazon verified ASIN B0CK2FCG1K (via DuckDuckGo Amazon search). SparkFun third-party gave no commission; now Amazon affiliate.
trendingApparatusSpeedyBee F405 V3 Flight Controller - 30x30-1
30×30 Betaflight F405 FC with wireless config — PID bench companion for the Flight Arena (verified ASIN).
$72.22trendingBookProgramming Massively Parallel Processors: A Hands-on Approach
CUDA/GPU parallel programming text for WebGPU PINN and edge GPU workloads.
$249trendingSBCNVIDIA Jetson Orin Nano Super Developer Kit
Jetson Orin Nano Super via SparkFun — edge PINN / SLAM compute. Third-party NVIDIA kit (tracked referral).
$129.99trendingAcceleratorGoogle Coral USB Edge TPU ML Accelerator coprocessor for Raspberry Pi and Other Embedded Single Board Computers
USB Edge TPU for int8 quantized nets — run the same quantized CoreML model sized here and see why int8 cuts RAM bandwidth but needs per-channel scales.
trendingSensorIntel RealSense Depth Camera D455
Stereo depth with IMU BMI055 fused via visual-inertial odometry — feed recorded bag into SLAM arena and validate simulated EKF reprojection error vs RealSense hardware baseline noise model.
⌄Show all 148 Studio — 140 more ↓
$259.99trendingSBCJetson Nano Developer Kit 16G eMMC onboard for AI Machine Learning (4GB RAM 16GB eMMC)
eMMC variant for TinyML deployment — flash int8 quantized CoreML model sized by this calculator and measure flash vs RAM footprint tradeoff.
$383.99trendingSBCNVIDIA Jetson Nano Developer Kit (945-13450-0000-100)
Edge GPU where int8 quantized models from this calculator actually run — compare theoretical size saving vs measured latency drop on Jetson vs iPhone Neural Engine.
$434.97trendingSBCNVIDIA Jetson Orin Nano Super Developer Kit
67 TOPS edge AI dev kit — benchmark int4 quantized models sized here and validate that CoreML quantized size math predicts actual flash/RAM usage on device.
$73.81trendingBookMultiple View Geometry in Computer Vision
Canonical multi-view geometry text underpinning visual odometry / SLAM pipelines.
$169.99trendingSBCiRasptek Basic Starter Kit for Raspberry Pi 5 — 4GB RAM, 27W PD PSU, Active Cooler
Pi 5 4GB board — Amazon verified ASIN B0CK3L9WD3. Was SparkFun third-party (no Originals commission); now Amazon affiliate (engineersport-20) for proper tracking.
$399.99trendingSBCSeeed Studio Raspberry Pi 5 Starter Kit - 16GB RAM, 64GB SD, Type-C PSU, Active Cooling Case
Pi 5 16GB starter kit — Amazon verified ASIN B0F944X9S4 (Seeed Studio 16GB + 64GB SD, Type-C PSU, case). 14.5 GiB ceiling for Q4_K_M up to ~12B params. SparkFun third-party gave no commission; now Amazon.
$1109.99trendingSBCYahboom Jetson Orin NX Super 16GB RAM 157 TOPS Dev Kit JetPack 6.2 256GB SSD
Orin NX 16GB — 100 TOPS unified LPDDR5, 14.5 GiB model ceiling, JetPack 6.2 + 256GB SSD included. Amazon verified — runs TensorRT-LLM for 4-12B Q4_K_M at 4k+ context.
$353.99trendingSBCOrange Pi 5 Plus 16GB RK3588 8-Core SBC, 2.4GHz, 8K Video Decoding
RK3588 8-core 16GB LPDDR4X, 14 GiB model ceiling — verified Amazon ASIN B0GYCTT6YM, affordable Pi5-class host for llama.cpp / RKLLM with NVMe.
Radxa ROCK 5B - 16GB
RK3588 ROCK 5B 16GB LPDDR4X — 14 GiB ceiling, PCIe NVMe, strong llama.cpp RKNN target. Official Radxa product page verified (no Amazon affiliate SKU yet).
LattePanda Sigma - 32GB (DFRobot DFR1080)
Intel Core i5-1340P 12C/16T + 32GB LPDDR5, 30 GiB model ceiling — verified DFRobot SKU DFR1080 product-2671.html, fits 15.8 GiB GGUF (Gemma 26B Q4_K_M ≈19.7 GiB runtime) with headroom. Uses ?tracking_id=vwfcds.
$92.22trendingBookProbabilistic Robotics (Intelligent Robotics and Autonomous Agents series)
Bible for EKF-SLAM: Chapter 10 derives prediction x'=f(x,u)+w and update with Jacobian H and innovation y, covariance S = HPH^T+R, and loop-closure data association gating used live here.
trendingKitSpeedyBee F405 V4 Flight Controller Stack:30x30 Bluetooth Stack with 4in1 55A ESC Board,Wireless Betaflight Configuration,Blackbox,Barometer for DJI Air Unit FPV
Bluetooth Betaflight stack (FC + 4-in-1 ESC) — full power stage for taking PID gains to a quad.
$29.69trendingBookTinyML: Machine Learning with TensorFlow Lite on Arduino and Ultra-Low-Power Microcontrollers
Quantization-aware training fp32→int8 and model footprint math — same byte-size arithmetic bytes = params * bits/8 this calculator does for CoreML fp16/int4.
$113.29trendingBookAntenna Theory: Analysis and Design
Derives array factor AF=∑I_n exp(jn(kd cosθ+β)) and microstrip patch cavity model with fringing fields this sandbox implements for beam tilt and radiation efficiency.
$229.00trendingAudio interfaceBehringer UMC1820 Audiophile 18x20 USB Audio/MIDI Interface with Midas Mic Preamplifiers and ADAT I/O | For Recording Microphones and Instruments
Audio interface used building Biquadia — 8-preamp USB I/O for real-time DSP testing.
$180.00trendingMicrophoneBit Trade One BIMIMI - Binaural Stereo Microphone Easy BINAURAL Recording/ASMR/Podcast/Recording/Streaming / W7.2×H1.9×D2.6 inches/ADBMM
Binaural stereo mic capturing HRTF — the spatial cues this head-tracked panner approximates via ITD/ILD and quaternion yaw driving StereoPannerNode.
$39.13trendingSensorAdafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055
Bosch BNO055 fusion IMU breakout — quaternion/Euler output for flight, SLAM, and head-tracking labs. Closest verified Amazon listing to BNO085 workflows.
$74.50trendingBookDigital Design and Computer Architecture: ARM Edition
From gates to RISC-V pipeline — Chapter 3 defines setup/hold T_su/T_h and clock skew that this sculptor checks live; Chapter 7 datapath mapping explains LUT vs MUX vs adder inference.
$92.40trendingBookDigital Signal Processing
Chapter on biquad Direct Form II transposed and pole-zero placement — move poles in pole-zero explorer and hear Q/ω0 map to ring frequency as Proakis derives.
$104.99trendingBookFPGA Prototyping by Verilog Examples: Xilinx Spartan-3 Version
Hands-on Verilog FPGA prototyping text paired with the Live Sculptor.
$33.86trendingBookHigh Speed Digital Design: A Handbook of Black Magic (Prentice Hall Modern Semiconductor Design)
Defines Hammerstad-Jensen Z0, skin depth delta=sqrt(2/ωμσ), and crosstalk K_b backward coupling — closed-form behind this lab's per-unit-length L,C extraction and NEXT/FEXT formulas.
$12.69trendingDiagnosticHiLetgo USB Logic Analyzer Device with EMI Ferrite Ring USB Cable 24MHz 8CH 24MHz 8 Channel UART IIC SPI Debug
Budget 8-ch USB logic analyzer (sigrok/PulseView). Useful for RTOS GPIO timing and SI digital demos — not a Saleae substitute in bandwidth.
$39.95trendingBookLoudspeaker Design Cookbook
Breakup modes, cone edge termination, and waveguide directivity index — chapters 7-9 explain the cone-breakup visualization and waveguide polar math this lab implements.
$198.00trendingBookMicrowave Engineering
Derives S-parameter conversion Z=Z0(I+S)(I-S)^-1, Smith Chart mapping Γ=(Z-Z0)/(Z+Z0), and stub matching l=λ/2π arctan(B/Y0) this bench solves continuously during drag.
$89.99trendingDiagnosticSEESII Upgraded NanoVNA-H4 Vector Network Analyzer, Latest V4.4 9KHz-1.5GHz HF VHF UHF 4" Touch Screen VNA Antenna Analyzer Measures S Parameters,Voltage Standing Wave Ratio, Phase,Delay, Smith Chart
Handheld VNA with touchscreen + SOL kit — S11/S21 lab companion for RF Bench and Antenna Sandbox.
$185.99trendingInterfaceRadioMaster Boxer 2.4GHz 16CH Hall Gimbals Radio Controller with Carrying Case, Mode 2 (ELRS)
EdgeTX Boxer with hall gimbals — ELRS-ready transmitter for PID Flight Arena bench flying.
$29.10trendingBookReal-Time Systems
Schedulability Theory: hyperbolic bound, SRP, and response-time analysis R_i = C_i + Σ⌈R_i/T_j⌉ C_j — formulas this scheduler evaluates to predict deadline misses before Gantt draws them.
$38.32trendingBookRF Circuit Design
L-network matching Q = sqrt(Rp/Rs-1) and component X = ±Q*Rs formulas — this bench's auto-match button solves these analytically then animates Smith Chart journey through series L then shunt C.
trendingSensorRTL-SDR Blog V4 R828D RTL2832U 1PPM TCXO HF Bias Tee SMA Software Defined Radio with Dipole Antenna Kit
100kHz-1.75GHz low-cost SDR for passively listening to patch array sweeps — compare simulator's beam steering phase Δφ = kd sinθ with over-the-air measured phase progression across 2.4GHz.
$43.68trendingBookThe Scientist & Engineer's Guide to Digital Signal Processing
Intuitive pole-zero explanation — why a pole near unit circle rings, zero near kills — the exact intuition this pole-zero explorer makes tangible with drag-to-listen.
$23.80trendingMicrocontrollerTeensy 4.0
600 MHz Cortex-M7 — high-rate control loops and DSP on the RTOS / FOC benches. Carried by SparkFun (third-party PJRC; tracked referral).
$275.45trendingBookSignals and Systems (Prentice-hall Signal Processing Series)
Defines the DTFT, DFT, and complex Fourier coefficients c_k this visualizer computes — chapters 3-5 derive the exact reconstruction formula tracing your doodle.
$13.90trendingKitAURSINC SMA Calibration Kit and SMA Male to Male Jumper for NanoVNA H H4 F V2 V3 SAA Mini1300 PS100 Vector Network Analyzer Antenna Analyzer
SOL cal standards + SMA jumper for NanoVNA H/H4 — SI Lab and RF Bench SOLT demos.
$71.89trendingBookImmersive Sound: The Art and Science of Binaural and Multi-Channel Audio (Audio Engineering Society Presents)
Derives HRTF, ITD = d/c sinθ, and head-tracking compensation — the exact panning law this playground interpolates as you drag yaw.
$26.99trendingKitSTM32 Nucleo Development Board with STM32F446RE MCU NUCLEO-F446RE
180MHz Cortex-M4 running FreeRTOS cases from this scheduler — flash task set with periods 10/50/100ms, measure actual jitter vs simulated WCET/CET and deadline miss rate under RMS vs EDF.
$26.80trendingMicrocontrollerTeensy 4.0 (Headers)
600 MHz M7 — flash the DF2T biquad cascade from Biquadia’s DSP core (pair with the Rev D audio shield for codec I/O) and hear the same filter your design exports here.
$206.99trendingDiagnosticAURSINC TinySA Ultra+ ZS406 Spectrum Analyzer with 50W N-Type 50dB RF Attenuator, 100kHz-5.4GHz, 4.0" Touchscreen HW V0.4.6, 2-in-1 Signal Generator, DC-3GHz 50Ω Ham Radio Test Kit
Portable spectrum analyzer + attenuator kit — EMI and spur checks next to the RF Bench.
$139.98trendingMicrophoneminiDSP UMIK-1 USB Measurement Calibrated Microphone
Calibrated USB mic with individual cal file — measure your room's RT60 and modal peaks to validate the room-mode eigenfrequencies this calculator predicts.
$95.34trendingBookUnderstanding Digital Signal Processing
Chapter on DFT and windowing explains spectral leakage and Gibbs phenomenon visible as overshoot when you draw sharp corners in the epicycles tracer.
$105trendingMicrophoneminiDSP UMA-8 USB Microphone Array
7-element MEMS microphone array with onboard XMOS DSP for raw channel output and real-time spatial audio / beamforming research.
$315.06trendingHeadphonesSennheiser HD 650 Open-Back Headphones
300-ohm audiophile reference open-back headphones used for binaural dummy head calibration and earphone transfer function measurements.
$530trendingApparatusSR3D® Dummy Head MKIII
Binaural dummy head acoustic fixture with anatomical silicone pinnae and Primo EM272 electret capsules for HRTF and headphone measurement.
$56.49trendingMicrophoneBlue Yeti Nano Premium USB Microphone - Shadow Grey (Renewed)
Compact USB condenser mic used for nymic testing.
$157.00trendingMicrophoneRØDE NT-USB+ Professional-Grade USB Condenser Microphone For Recording Studio Quality Audio Directly To A Computer Or Mobile Device, Black
USB condenser mic used for nymic testing.
$319.00trendingMicrophoneShure MV7+ Podcast Dynamic Microphone with Stand – OBS Certified, Enhanced Audio, LED Panel, USB-C & XLR Outputs, Auto Level Mode, Digital Pop Filter – for Podcasting, Streaming, and Recording, Black
USB/XLR hybrid mic used building and testing nymic.
$159.00trendingHeadphonesAudio-Technica ATH-M50X Professional Studio Monitor Headphones, Black, Professional Grade, Critically Acclaimed, with Detachable Cable
Reference monitoring headphones used for akous's binaural audio testing.
$299.99trendingMicrophoneSennheiser Pro Audio Sennheiser Pro Audio Wireless Microphone System, Black (MKE600)
Wireless mic system used for akous's ambient/binaural field recording.
$113.00trendingHeadphonesSony MDR7506 Professional Large Diaphragm Headphone
Reference studio headphones used for akous's binaural audio testing.
$199.99trendingWearableApple AirPods Pro 3 Wireless Earbuds, Active Noise Cancellation, Live Translation, Heart Rate Sensing, Hearing Aid Feature, Bluetooth Headphones, Spatial Audio, High-Fidelity Sound, USB-C Charging
MotionLink's head-tracking feature depends on the Headphone Motion API, which requires AirPods Pro.
$242.88trendingBookFundamentals of Finite Element Analysis
Assembles bar element k_e = AE/L [[1,-1],[-1,1]] and CST triangle stiffness, solves via Gaussian elimination — same matrix assembly loop this lab visualizes with color-mapped strain.
$439.00trendingDiagnosticFluke 87V Industrial Digital Multimeter, for Advanced Troubleshooting, Measures 1000 V AC/DC, Peak Min/Max, Low Pass Filter, Includes TL75 Test Leads, AC175 Alligator Clips, 80BK Temp Probe
True-RMS meter for phase current measurement and inductor DCR loss — validate simulator's I_q setpoint vs measured phase current sine with THD from SVPWM harmonics.
$21.99trendingComponentHATCHBOX 1.75mm Black PLA 3D Printer Filament, 1 KG Spool, Dimensional Accuracy +/- 0.03 mm, 3D Printing Filament
Reliable PLA spool for printing FEA fixtures and brackets from the Structural Lab.
$128.00trendingBookMechanics of Materials
Derives σ=Eε, beam deflection v''=M/EI, torsion τ=Tc/J, and Von Mises criterion — all analytical checks this FEA lab cross-validates against its stiffness matrix K·u=F solution.
$34.18trendingBookPower Electronics: A First Course
Derives SVPWM V_ref = V_dc/√3, dq transformation, and FOC i_d=0 control — complete theory behind simulator's Park/Clarke, PI current loops, and flux observer.
$132.47Book3D Math Primer for Graphics and Game Development
Chapters 8-10 derive quaternion multiplication, Euler-angle gimbal lock, and the conversion matrix this playground verifies live — the same math driving MotionLink's head-pose.
$27.98ToolFocusound Acoustic Panels 24 Pack 2"x12"x12" with 120 PCS Double-Side Adhesive - Sound Proof Pyramid Foam for Walls, Home Studio Noise Absorption & Echo Control Kit
Dense foam damping axial modes — place at pressure antinodes displayed in room-mode visualizer's 3D pressure field.
$35.99ToolFocusound 50 Pack Acoustic Foam Panels 1" x 12" x 12" Sound Proof Foam Panles Soundproofing Noise Cancelling Wedge Panels for Home Office Recoding Studio with 300PCS Double-Side Adhesive
1-inch wedge for mid-high absorption — use with room-mode calculator's Sabine RT60 equation to predict reverberation time reduction.
$39.98ToolFocusound 24 Packs Acoustic Foam Panels Pyramid 2" X 12" X 12", Soundproofing Foam Noise Cancelling Foam with 120 PCS Double-Side adhesive
Pyramid foam taming room modes at f = n c / 2L — measure RT60 drop and compare to acoustic-calculator predictions for absorption coefficient vs frequency.
$24.20MicrocontrollerArduino Nano 33 BLE Rev2 [ABX00071] - nRF52840 Microcontroller, Bluetooth Low Energy (BLE), MicroPython Support, Small Form Factor, 3.3V for IoT & Wireless Projects
nRF52840 board running ArduinoBLE — same chipset family as XIAO nRF52840 in BLExAR builds, exposing GATT structure this page visualizes as byte-level CSV frames.
$25.90MicrophoneBEHRINGER ECM8000
Reference omni for acoustic measurement — captures the same pressure field these fast calculators approximate with ray-tracing and modal sums.
$21.98ToolNRF52840-DONGLE Micro Dev Kit USB PCA10059
Wireshark BLE sniffer capturing over-the-air GATT transactions — see raw ATT Read/Write that become the CSV bytes this explorer frames.
$40.22BookBluetooth Low Energy: The Developer's Handbook
GATT, ATT, L2CAP, and UUID breakdown — chapter 4 maps exactly to the service/characteristic tree this visualizer renders for HM-10 UART bridge.
$32.00SensorBNO055 9-DOF Breakout Sensor
BNO055 9-DoF fusion IMU breakout for head-tracking and orientation demos.
$12.75BookChaos: Making a New Science
Narrative history of Lorenz, Feigenbaum, and the butterfly effect — the same deterministic chaos this double pendulum exhibits when you nudge its Lyapunov divergence slider.
$45.98ApparatusKinetic Energy Sculpture Chaos Pendulum Desk Decor, Double Oloid Physics Art Decor for Office
Double oloid chaos pendulum whose aperiodic motion never repeats — a physical embodiment of the Lagrangian symplectic integration this page runs at 4th order.
$31.75Apparatus3B Scientific U56006 Metal Square Chladni Plate, 7" Length x 7" Width
Precision steel plate for cymatics — dust with fine sand and drive at computed eigenfrequency to realize the Bessel-function nodal patterns this simulator solves.
$136.62ApparatusMJDHS Professional Ernst Chladni Vibration Generator, Chladni Pattern, and Visual Sound Wave are Classic Experimental Tools in The Field of Acoustics and Vibration(30hz-20khz, 30w)(Size:6.5in/6.5in)
30W driver sweeping through plate resonances — matches the eigenvalue sweep in this Chladni lab where sand flees antinodes to settle on nodal lines.
$220.49BookClassical Mechanics
Canonical derivation of the double-pendulum equations of motion via Euler-Lagrange — exactly the T-V Lagrangian this simulator integrates symplectically.
$116.92BookComplex Analysis
Defines analytic functions, Cauchy-Riemann ∂u/∂x = ∂v/∂y, and conformal property — drag f(z)=z² and watch CR fail/preserve angles live as Ahlfors proves.
$212.48BookComplex Variables and Applications (Brown and Churchill)
Chapter on mapping w = e^z, log z, Joukowski transform — the same homotopy slider f(z,t) this explorer interpolates between identity and complex map.
$98.37BookDAFX: Digital Audio Effects
Biquad-based effects: peaking, shelving, allpass for phaser — agentic pipeline's RAG over DAFX generates the same C++ kernel clang++ verifies here.
$81.31MicrophoneDayton Audio EMM-6 Precision Omnidirectional Electret Condenser Microphone for Room Acoustic Analyzers and Audio Measurement Systems, Calibration Data File with Response Graph Included
Omni condenser with cal file — pair with REW to measure SPL, RT60, and comb filtering the acoustic calculator suite computes via image-source method.
$59.98MicrophoneDayton Audio EMM-6 Precision Omnidirectional Electret Condenser Microphone for Room Acoustic Analyzers and Audio Measurement Systems, Calibration Data File with Response Graph Included
Latest EMM-6 variant with calibration file — measure waveguide polar response and cone-breakup waterfall to validate directivity index this lab computes.
$49.98MicrophoneDayton Audio iMM-6C Calibrated Measurement USB-C Microphone for iPhone, iPad Tablet and Android,Black
USB-C calibrated mic for iPhone/iPad — take to listening room and verify room-mode eigenfrequencies against calculator's mode list up to 300Hz.
$118.98MicrophoneDayton Audio UMM-6 USB Measurement Microphone
Legacy USB measurement mic for REW — capture on-axis SPL and compare to enclosure designer frequency response with baffle diffraction.
$79.99MicrophoneDayton Audio UMM-6 USB Measurement Microphone
USB cal mic for nearfield SPL and cone-breakup waterfall — capture the CSD breakup modes this simulator predicts via modal superposition.
$39.99ModelReplogle Ready to Assemble Illuminated World 12" Diameter Globe, USA Cartography, Modern Acrylic Stand and Blue Ocean Globe Ball. Easy to assemble globe that shows both Political and Vegetative information including political borders and provincial borders, major ocean currents, detailed lakes, rivers, tributaries and canals. (Illuminated)
Backlit globe with constellation overlay — compare its static terminator to this page's dynamically computed solar declination and real-time weather overlay across 16 cities.
$299.00KitFUN-TECH-LAB Windsible, Desktop Wind Tunnel, for 1:64 Diecast Car Models, Miniature Wind Simulation, Display Stand, for Collectors and Hobbyists
Tabletop wind tunnel with flow-visualization streamlines — park a 1:64 model in the test section and compare the real wake against this page’s D2Q9 vorticity field and Strouhal estimate.
$25.98KitYoung's Double-Slit Experiment, Single Slit, with Holder Observation Board Red Light Source, Optics Elements, Optical Physical Experiment Kit, Interference Diffraction Grating Sheet 50 * 50mm
Physical demonstration of matter-wave interference underlying Schrödinger's equation — same wave-particle duality that makes tunneling through a classically forbidden barrier possible.
$213.49ApparatusEisco - Complete Optical Bench and Attachment Set with 40 Pieces and 20 Lab Activities for Optics Experiments
Actually a wind-tunnel-friendly flow-viz partner — pair with smoke tube to see boundary-layer separation and wake shedding your D2Q9 simulation traces numerically.
$44.99ApparatusToysmith Euler’s Disk Desk Toys Office Adults - Create Hypnotic Light Refraction Sound Display - Science Decor Home And Workspace - Kinetic Motion Physics Models Kids 8+
Spinning disk's decreasing contact and rising audible frequency demonstrate modal energy concentration — same standing-wave energy argument explaining why Chladni sand avoids vibrating regions.
$28.99KitCMS MAGNETICS - (2oz Kit) Ferrofluid Science Experiment Kit for Education in Magnetism - Includes: 2 Fluid Ounce (59mL) Bottle of Ferrofluid, Gloves, Pipette, Petri Dishes
Lab-grade ferrofluid showing thermomagnetic convection — pour near a voice-coil mock-up and see why vendors add ferrofluid to lower R_th and Ti rise.
$21.98ApparatusFerrofluid Magnetic Display – Science Education Magnetism Kit – Interactive Liquid Metal Physics Demonstration – Executive Desk Décor with Neodymium Magnets – STEM Learning Tool
Ferrofluid spikes under magnetic field emulate ferrofluid cooling in voice-coil gaps — the same thermal-magnetic mechanism reducing thermal compression via enhanced heat transfer.
$214.00SensorFlir One - Thermal Imaging Camera for iOS Smartphones (iPhone 15 and Newer w/USB-C), 240x180 Super Resolution (80x60 Native IR)
IR camera imaging voice-coil heating ΔT = P * R_th — directly visualize the copper TCR and thermal compression curve this lab simulates.
$78.83BookAn Introduction to Fluid Dynamics (Cambridge Mathematical Library)
Derives Navier-Stokes and Reynolds number Re = UL/ν — crank Re past ~50 in this LBM tunnel and watch the von Kármán vortex street Batchelor describes appear.
$85.23BookFluid Mechanics
Boundary layer separation and drag coefficient Cd vs Re — place cylinder in LBM tunnel and validate wake Strouhal against White's drag crisis curve.
$193.68BookFundamentals of Photonics
Derives Gaussian beam resonator stability and ABCD law for laser cavities — test the g1·g2 ≤1 condition this bench evaluates for two-mirror resonators.
$72.19SensorAEGTEST 8035 DC Gauss Meter, Telescopic Hall Sensor, Rechargeable Tesla Meter 0–2500 mT, Magnetometer with Data Logging and Alarm, Magnetic Field Strength Meter, ±5% General Accuracy for Daily Use
Measures B-field magnitude around loops/solenoids — hand-verify the Biot-Savart μ0/4π scaling this tracer computes before field-line integration.
$86.00BookGravitational N-Body Simulations: Tools and Algorithms (Cambridge Monographs on Mathematical Physics)
Direct N-body with Hermite integration — compares to this page's symplectic scheme showing why 4th-order composition keeps figure-eight orbit stable vs Euler blow-up.
$49.18BookIntroduction to Electrodynamics
Chapter 5 derives Biot-Savart law and Helmholtz coil field — the exact integral this tracer evaluates with RK4 field-line marching.
$49.99BookIntroduction to Quantum Mechanics
Chapters 2-3 cover time-independent Schrödinger equation, rectangular barrier, and exact transmission T = [1 + V0² sinh²(kL)/4E(V0-E)]⁻¹ that this Crank-Nicolson run checks live.
$68.25BookHeat and Mass Transfer: Fundamentals & Applications
Derives conduction, convection, R_th = L/kA, and thermal time constant — the exact lumped thermal network this voice-coil compression simulator integrates.
$237.23BookOptics
Chapter 6 derives the 2×2 ABCD matrix for lenses/mirrors — the exact paraxial ray transfer this bench composes to build system matrix and effective focal length.
$53.90BookOptics Global Edition
Covers g1·g2 resonator stability criterion |g1 g2| ≤ 1 — toggle the two-mirror cavity in this bench and watch stable/unstable regions match Hecht's diagram.
$28.95ModelMetal Earth Fascinations Premium Series International Space Station 3D Metal Model Kit Bundle with Tweezers
Steel ISS model — track the real ISS live on this globe's TLE orbit, then hold the model while it passes over your city at 7.66 km/s orbital velocity.
$38.99ToolJuviPerpric Digital K Type Thermocouple Thermometer, Dual Channel Thermocouple Tester(-238~3212℉) with 2 Temperature Clamp and 2 Wired Thermocouple Probes
Probe voice-coil former temperature and log T_vc(t) — compare measured τ_thermal rise against this lab's first-order thermal RC model with ferrofluid cooling.
$57.87BookThe Lattice Boltzmann Method: Principles and Practice (Graduate Texts in Physics)
Defines the D2Q9 equilibrium distribution f_i^eq = w_i ρ [1 + c_i·u/cs² ...] and BGK collision operator this tunnel implements live for Von Kármán shedding.
$399.98ModelLEGO 92176 Ideas NASA Apollo Saturn V Space Rocket and Vehicles, Spaceship Collectors Building Set with Display Stand [Amazon Exclusive], 14+ years
1:110 Saturn V with 1969 Apollo stages — build it while your virtual ship undergoes Lorentz contraction and relativistic Doppler shift of CMB to visible blue.
$18.01ToolMagnetic Field Viewing Film, Magnetic Field Viewer, 4 x 4 Inch
Green film renders flux lines from Biot-Savart superposition visible — lay it over a current loop and see the same dipole field this simulator traces via Runge-Kutta.
$11.99ToolGreen Magnetic Viewing Film 4x6 | Cool Magnets Science Kit | Magnetic Field Detector & Visual Aid for Physics Education | Ideal for Research & Magnetism Demonstrations
Shows Helmholtz pair uniformity and solenoid fringe fields in real life — directly comparable to the B_z magnitude readout under your cursor.
$43.15BookMaster Handbook of Acoustics, Seventh Edition
Bible of RT60, Sabine, and absorption coefficients — the exact formulas these acoustic calculators implement for reverb, room modes, and critical distance.
$24.99KitEstes 1427 Alpha III Rocket-Building Kit, Beginner Flying-Rocket Model Kit for Ages 10+, Includes Launch Pad and Controller
Real rocket with 1g thrust-to-weight teaching proper acceleration — contrast with this page's constant 1g proper-acceleration hyperbolic motion where coordinate acceleration → 0 near c.
$249.00ApparatusMOVA Self Rotating Globe, Earth with Clouds Classic (4.5")
Solar-powered, self-rotating satellite globe that spins continuously using ambient light and Earth's magnetic field — demonstrating Coriolis torque and gyroscopic rotation live.
$39.99ApparatusCERROPI Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base)
Conservation of momentum/energy demo — the same conservation your symplectic integrator preserves while Newtonian gravity chaotically exchanges momentum among three equal masses.
$78.00BookNonlinear Dynamics and Chaos
Chapter 6 explicitly integrates the double pendulum Lagrangian — Lyapunov exponent, phase-space Poincaré section, and the sensitivity that this simulator paints as geometry.
$98.99MicrocontrollerNRF52840-DK EVAL Board for NRF52840 nRF52840 - Transceiver; 802.15.4 (Thread, Zigbee®), ANT, Bluetooth® 5.x (BLE) 2.4GHz Evaluation Board
Official nRF52840 dev kit with BLE 5 and Thread — flash a GATT server and watch this explorer parse your advertised services/characteristics live.
$24.99MicrocontrollerGeeekPi nRF52840 MDK USB Dongle w/Case Development Platform
nRF52840 dongle acting as BLE sniffer — captures ATT MTU and GATT notifications that become CSV rows this BLE visualizer frames.
$89.70KitDKULMN Physical Optics Experimental Equipment, Concave-Convex Lens and Large Optical Bench,Optical Bench Set,Complete Teaching Equipment
1-meter rail with carriers for lenses/mirrors — recreate the resonator stability test g1·g2 and image formation this simulator ray-traces via ABCD multiplication.
$74.01BookOrbital Mechanics for Engineering Students: Revised Reprint (Aerospace Engineering)
Derives n-body equations, figure-eight choreography existence proof, and symplectic energy conservation — exactly the trajectory this page verifies stays bounded for 500 periods.
$399.00ModelMotorized Metal Solar System Model Kit, 600+ Precision Parts Mechanical Orrery with LED Sun, STEM Astronomy Engineering Building Kit for Adults, Planetary Gear Planetarium Desk Display
600+ precision metal parts, motor-driven planets on brass gear trains — a buildable mechanical computer tracing the same Newtonian choreography this page integrates with symplectic Yoshida 4th order.
$71.99KitFNIRSI 2C23T 3 in 1 Handheld Oscilloscope Multimeter DDS Generator, 2 Channels, 10MHz Bandwidth, 50MSa/s Sampling Rate, 10000 Counts, Voltage, Current, Capacitor, Resistor, Diode Test
Feed a square wave into your scope and see its Fourier epicycles live — same harmonic decomposition (odd k only) this page animates as rotating vectors.
$100.39BookThe Physics of Musical Instruments
Modal analysis of plates and strings with Bessel functions — root of Chladni plate eigenmodes and waveguide modal cutoff fc = c/2a this toolbox computes.
$41.99KitGeRRiT Physical Optical Equipment Set Science Classroom Optics Kit Concave Convex Lens Optical Bench Attachment Set Complete Optical Teaching Equipment Physical Imaging Equipment for Laboratory
Handheld concave/convex lenses and ray box — build the same ABCD cascade (lens-gap-mirror) physically and verify the numerical ray fan traced here.
$9.98ApparatusPrecision Metal Gyroscope Toy Rainbow Anti Gravity Spinner - Educational Physics Toys & Gyroscope for Adults Illusion, Balance Desk Fidget for Office, Cool Science Gadgets for Adults & Teens
Spinning rotor demonstrating angular momentum conservation and precession — the physical intuition behind why quaternions avoid gimbal lock where Euler angles fail.
$59.69BookPrinciples of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light
Rigorous electromagnetic theory of ABCD and Fresnel diffraction — compare paraxial ray fan this bench traces to Born's exact wavefront aberrations.
$6.23BookRelativity: The Special and General Theory (Dover Books on Physics)
Einstein's own derivation of Lorentz transformation and Minkowski spacetime — the same γ = 1/√(1-β²) this page computes to show ship time vs Earth time twin paradox.
$62.86BookModern Quantum Mechanics
Chapter 2 solves barrier penetration via WKB and exact matching — launch a Gaussian packet in this page and compare measured T/R against Sakurai's analytic formula.
$269.99StorageSANDISK 1TB Extreme Portable SSD (New Model) - up to 2000MB/s Transfer speeds, USB Type-C connectivity, Reliable Durability - Black - SDSSDE70-1T00-G25
Portable SSD used for studio project storage and backups.
$57.75BookSatellite Orbits: Models, Methods and Applications
SGP4 and TLE propagation — this globe computes ISS position client-side from real TLE elements using the same Kepler + J2 math Montenbruck derives.
$259.95SensorSparkFun GPS-RTK-SMA Breakout - ZED-F9P (Qwiic)
SparkFun Original ZED-F9P RTK GNSS — centimeter-class pose for SLAM / odometry outdoor labs. 10% Originals commission.
$20.95SensorSparkFun 9DoF IMU Breakout - ICM-20948 (Qwiic)
SparkFun Original Qwiic ICM-20948 — 9-DoF for PID Flight Arena and SLAM IMU fusion. 10% Originals commission.
$99.95KitSparkFun Inventor's Kit - v4.1.2
SparkFun Original SIK — full starter lab kit for circuit + code fundamentals. 10% Originals commission. (SparkFun does not stock Prusa/Bambu printers; this is the education path into hardware.)
$18.50KitSparkFun MicroMod Main Board - Single
SparkFun Original MicroMod carrier — swap processor blades for FPGA/MCU experiments next to Verilog Live Sculptor. 10% Originals.
$17.50ToolSparkFun OpenLog
SparkFun Original OpenLog — serial data logger for FOC / RTOS capture sessions. 10% Originals commission.
$16.95MicrocontrollerSparkFun Pro Micro - RP2350
SparkFun Original Pro Micro RP2350 — compact dual-core for RTOS task demos. 10% Originals commission.
$29.50MicrocontrollerSparkFun RedBoard Plus
SparkFun Original Uno-compatible RedBoard Plus — Qwiic-ready teaching MCU for FreeRTOS demos and sensor labs. 10% Originals commission.
$29.95MicrocontrollerSparkFun Thing Plus - ESP32 WROOM (USB-C)
SparkFun Original ESP32 Thing Plus — Wi-Fi/BLE flight-firmware and RTOS target. 10% Originals commission.
$30.95MicrocontrollerSparkFun Thing Plus - RP2350
SparkFun Original RP2350 Thing Plus (Feather) — dual-core lab MCU with Qwiic. 10% Originals commission.
$119.95KitExperiential Robotics Platform (XRP) Kit
SparkFun Original XRP robot kit — mechanical + control lab hardware when you outgrow FEA fixtures. 10% Originals. (No 3D printers in SparkFun catalog as of 2026-07.)
$57.30BookPrinciples of Quantum Mechanics, 2nd Edition
Derives unitary evolution and Crank-Nicolson as Cayley form (I - iHΔt/2)/(I + iHΔt/2) preserving norm — the method this simulator uses for wave-packet tunneling.
$71.00BookSpacetime Physics
Defines hyperbolic worldline x = c²/a (cosh aτ/c -1), proper time, and Minkowski diagram — the exact equations this starship journey plots as you flip-and-burn to Proxima.
$279.56KitGSC International WVGENKIT Standing Wave Demonstration Kit for Physical Science
Driver + square plate kit — sweep frequency and see nodal lines accumulate sand along Chladni figures exactly as this modal eigensolver's Laplacian eigenmodes predict.
$44.48BookTesting Loudspeakers
Step-by-step measurement of Thiele-Small, K_ms(x), Le(x) — same nonlinearities the loudspeaker nonlinearity lab models with displacement-dependent Bl(x) and stiffness.
$73.94BookTurbulent Flows
Kolmogorov energy cascade and vortex stretching — crank Reynolds number in LBM tunnel past transition and see Pope's -5/3 law emerge in vorticity power spectrum.
$38.99AccessoryUSB C Docking Station Dual DisplayPort, 8 in 1 USB Hub with 2 DP, HDMI, VGA, USB C 2.0, A 2.0, PD Charging Port, Multi Monitor Adapter for Dell/HP/Lenovo Laptops
Studio desk dock used across all app development work.
$54.49BookVisual Complex Analysis: 25th Anniversary Edition
Entire premise is epicycles-as-complex-exponentials — e^{iwt} spinning phasors whose sum is a discrete Fourier series, same DFT this playground draws with.
$31.63BookVisual Differential Geometry and Forms: A Mathematical Drama in Five Acts
Sequel to Visual Complex Analysis — explains how conformal warp preserves infinitesimal circles, which you see as grid squares stay square under holomorphic f(z).
$59.99CableMutecPower 16 Feet Active USB 3.0 Extension Cable
Active USB 3.0 extension cable with signal booster chipset for long-distance USB audio array runs.
$8.99PowerMaxLLTo 5V 2A AC Power Adapter (3.5mm x 1.35mm Plug)
5V 2A DC wall power adapter powering active USB extension repeaters and audio hardware.
$13.69CableHOSONGIN 1/4" TRS Y-Splitter Cable (1.6ft)
1/4-inch TRS stereo Y-adapter cable with gold-plated connectors for tapping headphone terminal voltage during multimeter calibration under load.
Biquadia6
▲ trending · 5
$9.99trendingAudioComimark 1Pcs ADMP401 MEMS Microphone Breakout Module Board for Arduino Universal 1.3cm*1cm
MEMS mic breakout used for real-time DSP experiments feeding into Biquadia.
$229.00trendingAudio interfaceBehringer UMC1820 Audiophile 18x20 USB Audio/MIDI Interface with Midas Mic Preamplifiers and ADAT I/O | For Recording Microphones and Instruments
Audio interface used building Biquadia — 8-preamp USB I/O for real-time DSP testing.
$229.99trendingAudio interfaceIK Multimedia iRig Pro Duo I/O USB audio interface, TRS balanced & headphones outputs, audio mixer to 24-bit, midi interface for music studio, recording, podcasting, streaming & social apps
Portable 2-channel USB-C audio interface used for mobile Biquadia field recording.
$237.00trendingMicrophoneShure MV88+ Video Kit Digital Stereo Condenser Microphone for iPhone, Android, Mac & PC - Portable Recording Mic with DSP Controls, Headphone Monitoring & Tripod, Black
Portable stereo condenser mic kit used for Biquadia field/video capture.
$8.99trendingAudioSABRENT USB External Stereo Sound Adapter for Windows and Mac. Plug and Play No Drivers Needed. (AU-MMSA)
USB audio interface used in early Biquadia MEMS-mic prototyping.
$9.99Power5V 3A USB C/Type-C Power Supply Adapter, 5 Volt 3000mA Power Cord Adapter for Raspberry Pi 4 Model B 1GB/2GB/4GB and More 5V 15W Office or Home Devices,UL Listed FCC
Power supply used for Raspberry Pi builds and Biquadia's studio desk.
itria10
▲ trending · 3
$61.00trendingBookDeep Learning (Adaptive Computation and Machine Learning series)
Foundational deep-learning textbook referenced while building itria.
$40.00trendingBookDesigning Machine Learning Systems: An Iterative Process for Production-Ready Applications
ML systems-design reference used while building itria.
$49.50trendingBookHands-On Machine Learning with Scikit-Learn, Keras, and TensorFlow: Concepts, Tools, and Techniques to Build Intelligent Systems
Practical ML reference used while building itria.
$6,999.00ComputerApple MacBook Pro M5 Max, 128GB Unified Memory, 2TB SSD
The portable 128 GB machine. Same resident-model argument as the Mac Studio, in a laptop you can profile on.
$1,699.00ComputerApple MacBook Air 13-inch M5, 32GB Unified Memory, 512GB SSD, Midnight
32 GB of unified memory in the lightest Apple silicon body — enough to keep a quantized mid-size model resident instead of streaming it off SSD.
$329.00WearableApple Watch Series 11, GPS 46mm, Jet Black Aluminum
The watchOS target itself. Any on-device inference claim for the Watch is bounded by its CPU-accessible bandwidth, which Apple does not publish.
$4,649.99ComputerNVIDIA DGX Spark — Personal AI Desktop Supercomputer, GB10 Grace Blackwell
128 GB of coherent unified memory on a GB10 Grace Blackwell chip. A 70B at Q4_K_M is ~33 GiB of weights, so this holds one resident with room for long context — and Q8 too.
$4,549.99ComputerASUS Ascent GX10 Personal AI Supercomputer — GB10, 128GB LPDDR5x, 2TB NVMe
The same GB10 superchip and 128 GB unified memory as the DGX Spark, on a 2 TB NVMe. Sold explicitly as a local-LLM and RAG workstation.
⌄Show all 10 itria — 2 more ↓
$12,855.95GPUPNY NVIDIA RTX PRO 6000 Blackwell Workstation Edition — 96GB GDDR7
96 GB of GDDR7 on one card. The single-GPU route to a resident 70B: the weights fit roughly three times over at Q4_K_M, and the memory bandwidth is what actually sets decode speed.
$12,950.00GPUPNY NVIDIA RTX PRO 6000 Blackwell MAX-Q Workstation Edition — Dual Fan, 96GB GDDR7
The Max-Q variant of the 96 GB card — same memory, a lower power envelope, for a workstation that cannot feed a 600 W board.
BLExAR35
▲ trending · 2$259.95trendingSBCCanaKit Raspberry Pi 5 Starter Kit PRO — Turbine Black, 8GB RAM, 128GB
Flagship Pi 5 8GB board — Amazon verified ASIN B0CK2FCG1K (via DuckDuckGo Amazon search). SparkFun third-party gave no commission; now Amazon affiliate.
$169.99trendingSBCiRasptek Basic Starter Kit for Raspberry Pi 5 — 4GB RAM, 27W PD PSU, Active Cooler
Pi 5 4GB board — Amazon verified ASIN B0CK3L9WD3. Was SparkFun third-party (no Originals commission); now Amazon affiliate (engineersport-20) for proper tracking.
$9.99Power12V Power Supply, 12V 2A 24W Power Supply AC100-240V to DC 12 Volt Adapter with 5.5mm x 2.1mm Tip and 9 Interchangeable Jacks Plug for LED Strip Lights, CCTV Cameras, Routers and More
Power supply used for BLExAR's stepper-motor build.
$9.99Power5V 3A USB C/Type-C Power Supply Adapter, 5 Volt 3000mA Power Cord Adapter for Raspberry Pi 4 Model B 1GB/2GB/4GB and More 5V 15W Office or Home Devices,UL Listed FCC
Power supply used for Raspberry Pi builds and Biquadia's studio desk.
$11.99ComponentTeyleten Robot ADS1115 16 Bits 4 Channel Analog-to-Digital Converter Precised Develop Board Module Amplifier Board ADC I2C IIC for Arduino Raspberry Pi (Pack of 3pcs)
Analog-to-digital converter used across BLExAR's sensor builds.
$53.95SensorAdafruit 3538 AMG8833 IR Thermal Camera Breakout
Grid-EYE 8x8 thermal array used in BLExAR's thermal-camera build.
$8.80InputhiBCTR 2 Packs Joystick Module KY-023 Dual-Axis XY Analog Thumbstick Sensor with Push Button, PS2 Style Control Lever for Arduino, Raspberry Pi, ESP32 DIY Game Controller and Robotics Projects
Joystick module used in BLExAR's haptic-feedback joystick build.
$19.30MicrocontrollerArduino Nano ESP32 with Headers [ABX00083] - ESP32-S3, USB-C, Wi-Fi, Bluetooth, HID Support, MicroPython Compatible for IoT & Embedded Projects
Official Arduino board (ABX00083) — Bluetooth/WiFi capable, used for BLExAR's e-paper and BLE prototyping.
⌄Show all 35 BLExAR — 27 more ↓
$18.88SensorTeyleten Robot ATGM336H GPS+BDS Dual-Mode Module Flight Control Satellite Positioning Navigator Replacement NEO-M8N NEO-6M for Arduino 2pcs
Compact dual-mode GPS module used for BLExAR's pocket GPS tracker build.
$8.99PrototypingELEGOO 6PCS 400 Point Breadboard Kit Solderless Breadboards for Arduino Project Small Bread Board Electronics for Circuits PCB Prototype Board
Standard prototyping breadboard used across BLExAR builds.
$13.99DriverTeyleten Robot 3D Printer Parts DRV8825 Stepper Motor Driver Module with Heat Sink for Ramps 1.4 StepStick A4988 (5pcs)
Driver board paired with the NEMA 17 in the stepper-motor build.
$14.98MicrocontrollerELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino
ATmega328P-based Uno R3 clone — used across BLExAR's RFID, GPS, and joystick hardware builds. Also the usual microcontroller for reading an IMU's raw quaternion over I2C.
$18.99MicrocontrollerType-C D1 Mini NodeMCU ESP32 ESP-WROOM-32 WLAN WiFi Bluetooth IoT Development Board 5V Compatible for Arduino (3pcs Type-C)
Compact ESP32 board used for BLExAR's haptic-feedback joystick build.
$18.99SensorGREDIA 3/4" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-60L/min (Pack of 2）
Flow sensor used in BLExAR's water-metering build. Uses a Hall-effect magnetic sensor — the same Biot–Savart field the tracer models.
$12.88SensorINA226 Voltage Current Monitor 0-36V 20A Tester I2C IIC Power Monitoring Sensor Module
Power-monitoring module used in BLExAR's solar-panel characterization build.
$13.99Power2 Pcs 3.7V 600mAh 25C 802540 Rechargeable Lipo Battery with USB Charger for Syma X5C X5SW Hengqi 905 Cheerson CX-30 Quadcopter RC Drone Spare Parts
Rechargeable battery used across portable BLExAR builds.
$21.99RFIDhiBCTR 12-Piece RFID Kit: Mifare RC522 RF IC Card Sensor Module with S50 Blank Cards and Keychains, Compatible with Arduino and Raspberry Pi
RFID reader + tag kit used in BLExAR's Arduino RFID build.
$13.88ActuatorMiuzei MG90S 9G Micro Servo Motor Metal Geared Motor Kit for RC Car Robot Helicopter, Mini Servos for Arduino Project (4)
Micro servo used across several BLExAR Arduino builds.
$7.99StorageGeekstory 5 PCS Micro SD Card Module Mini TF Card Adapter with Memory Storage Breakout Board SPI Interface Driver + 40 PCS Female to Male Dupont Cable Line for Arduino Raspberry Pi
SD card module used for on-device logging in BLExAR's GPS and solar-panel builds.
$15.99SensorHiLetgo GY-906 MLX90614ESF Non-Contact Infrared Temperature Sensor Module IIC I2C Serial for Arduino
Non-contact IR temperature sensor used alongside the thermal-camera builds.
$66.30SensorMLX90640 Thermal Imaging Camera, 32x24 IR Sensor Array for Raspberry Pi, HVAC, Fire Detection – Low Power, High Accuracy, I2C Interface
Higher-resolution thermal array used as an alternative sensor across BLExAR's thermal and audio-array builds.
$43.99SensorEC Buying GY-MPU9250 9 Axis Sensor 9 DOF Accelerometer with Gyroscope and Magnetic Field Sensors, 16 Bit AD Converter Data Output IIC I2C SPI
9-DoF IMU used in BLExAR's calibration builds. The onboard magnetometer is a 3-axis Hall-effect sensor — the same physics modeled by the magnetic field-line tracer — while the DMP outputs attitude as a quaternion matching CMHeadphoneMotionManager's format.
$32.99MotoriMetrx Nema 17 Stepper Motor 42x23mm 5PCS 17HS4023 Pancake Motor 1.5A-3.8V 2 Phase 4 Wires 1.8 Degrees with 1Meter Cable for 3D Printer Motors
Stepper motor used in BLExAR's Raspberry Pi motor-control build.
$18.99Sensor2Pack GPS Module,Navigation Satellite Positioning NEO-6M,Arduino GPS, Drone Microcontroller, GPS Receiver Compatible with 51 Microcontroller STM32 Arduino UNO R3 with Antenna High Sensitivity
GPS module used across BLExAR's GPS tracker and audio-array builds.
$12.99ComponentBOJACK 12 Values 60 pcs Variable Resistor 100 to 500K ohm 3296W Multiturn Trimmer Potentiometer Assortment Kit
Used as a rheostat in BLExAR's solar-panel characterization build.
$134.99SBCVilros Raspberry Pi 4 4GB Basic Starter Kit with Fan-Cooled Heavy-Duty Aluminum Alloy Case
4GB Pi 4 kit with case/fan — the compute base for BLExAR's LiDAR, thermal, GPS, and audio-array builds.
$14.59Microcontroller2Pcs Raspberry Pi Pico Development Board, Raspberry Pi RP2040 Dual-core ARM Cortex M0+ Processor, Running Up to 133 MHz, Support C/C++/Python, 2MB Quad SPI Flash Integrated with SPI/I2C/UART Interface
RP2040 board used for the WS2812 LED ring and OLED display builds.
$16.75StorageSanDisk Ultra SDSQUNS-016G-GN3MN 16GB 80MB/s UHS-I Class 10 microSDHC Card
Storage card used in BLExAR's solar-panel data-logging build.
$17.99MicrocontrollerSeeed Studio XIAO nRF52840 (Pre-Soldered)
Tiny nRF52840 BLE board used for BLExAR's Bluetooth prototyping.
$15.99PowerAOSHIKE 10Pcs 2V 130mA Micro Solar Panels Photovoltaic Solar Cells with Wires Solars Epoxy Plate DIY Projects Toys 54mm x 54mm/2.13" x 2.13"
54x54mm panel used in BLExAR's solar characterization build.
$9.99DisplayELEGOO 3PCS 0.96 Inch OLED Display Screen Module Compact Self-Luminous SSD1306 I2C Display Mini Screens for Arduino Projects (White)
Small OLED display used in BLExAR's Pico display build.
$25.98SensorWishiot TF-Luna LiDAR Range Finder Sensor 0.2m-8m Single-Point Ranging Module UART/I2C 5V with 6Pin Terminal to Dupont Cable for Arduino/RPi Pico/Pixhawk/WiFi_Lora_32
Single-point LiDAR module used for BLExAR's distance-detection build.
$5.99Actuator2PCS PWM Vibration Motor Switch Module DC 5V for Arduino MEGA2560 R3 DIY Kit 9000RPM Minimum
Haptic motor used in BLExAR's joystick build.
$18.23Display1.54 Inch E-Ink Display Module 200x200 SPI Interface e-Paper Screen Compatible with Raspberry Pi Arduino, Ultra Low Power Electronic Paper for Shelf Labels DIY Projects
Low-power e-paper display used in BLExAR's Bluetooth e-paper build.
$18.99LEDDIYmall 5PCS 16 Bits RGB LED Rings 16 X WS2812 WS2812B 5050 Lamp Light with Integrated Drivers Individually Addressable for Arduino
Individually-addressable LEDs used in BLExAR's Pico LED ring build.
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