Notes on independent software, product decisions, interface craft, and what we learn while shipping.https://makerportal.ai/https://makerportal.ai/blog/2026-08-11-itria-hackernews-49245161/https://makerportal.ai/blog/2026-08-11-itria-hackernews-49245161/PrivateRedact's auto-selection limits Ollama inference to 4.0 tok/s on an 8 GB Pi 5 by defaulting to CPU memory, ignoring unified bandwidth.Tue, 11 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/auralinter-agentic-dsp-verification/https://makerportal.ai/blog/auralinter-agentic-dsp-verification/How RAG-grounded retrieval and a clang++ verifier catch a hallucinated biquad formula a single LLM call ships — and why AuraLinter isn't fully on-device.Fri, 17 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/binaural-head-headphone-measurement/https://makerportal.ai/blog/binaural-head-headphone-measurement/Class-compliant multichannel USB audio capture, a loaded 1 V / 103 dB SPL nominal reference at 1 kHz, and binaural recording analyzed on iPhone.Sun, 09 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/biquadia-github-1095330682/https://makerportal.ai/blog/biquadia-github-1095330682/Two figures in LLMKube's GKE benchmark are wrong: prompt processing is 35.4×, not 66×, and token generation is 13.9×, not 17×.Sun, 09 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/biquadia-github-1138007869/https://makerportal.ai/blog/biquadia-github-1138007869/Wax's own benchmark puts hybrid recall p95 at 6.1 ms — six times above the "sub-millisecond" label — and the figure omits which index engine ran.Sat, 22 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/biquadia-github-1171688936/https://makerportal.ai/blog/biquadia-github-1171688936/Driving Apple's Neural Engine through private frameworks: 172.4 tok/s on ANE vs 283 on CPU, and delta compilation that pays for itself in 1.21 steps.Wed, 05 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/biquadia-github-1173023018/https://makerportal.ai/blog/biquadia-github-1173023018/Espresso's 3.41× ANE speedup over CoreML, read against a 70 µs dispatch floor, sets a 168.7 µs lower bound on CoreML per-token overhead.Fri, 14 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/biquadia-github-1233899535/https://makerportal.ai/blog/biquadia-github-1233899535/Bandwidth calculation for Presspeech's Parakeet model on M4 Max shows inference takes ~1% of latency, with pipeline dispatch consuming the rest.Wed, 05 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/biquadia-github-1267734215/https://makerportal.ai/blog/biquadia-github-1267734215/ANEForge reaches 16.8 tok/s on Qwen3-8B (up from 7.4), hitting the verify(K)≈verify(1) ceiling at 29.6 GB/s vs Orion's 42.8 GB/s floor.Mon, 10 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/biquadia-hackernews-49259339/https://makerportal.ai/blog/biquadia-hackernews-49259339/M4 Max llama.cpp inference consumes 99.0–99.8% of its 400 GB/s bandwidth, leaving no slack to absorb VM overhead — a direct constraint on near-native…Wed, 12 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/blexar-ble-uart-bridge/https://makerportal.ai/blog/blexar-ble-uart-bridge/Why HM-10's single-characteristic UART and the Nordic UART Service aren't interchangeable, and the newline-framing gotcha that only appears at low MTU.Fri, 17 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/designing-the-one-handed-moment/https://makerportal.ai/blog/designing-the-one-handed-moment/A field note on glanceability, reach, and building interfaces for the imperfect moments where software is actually used.Sat, 04 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/elevenlabs-web-audio-streaming-latency/https://makerportal.ai/blog/elevenlabs-web-audio-streaming-latency/Browser latency ledger for ElevenLabs TTS, Web Audio scheduling, DSP, and output—plus mistakes that make a fast demo sound broken.Sun, 19 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/elevenlabs-webassembly-audioworklet-streaming/https://makerportal.ai/blog/elevenlabs-webassembly-audioworklet-streaming/How to build sub-100ms real-time voice streaming applications in the browser using ElevenLabs API, WebAssembly decoders, and AudioWorklet ring buffers.Wed, 29 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/inside-biquadia/https://makerportal.ai/blog/inside-biquadia/How privacy, real-time constraints, and the character of physical sound shaped MakerPortal’s newest release.Sun, 28 Jun 2026 00:00:00 GMThttps://makerportal.ai/blog/itria-github-1051796718/https://makerportal.ai/blog/itria-github-1051796718/ETOS-LLM-Studio pins watchOS inference to the CPU path, so bandwidth divided by model size sets the ceiling — 9.4 tok/s on a Pi 5 at 17 GB/s.Sat, 08 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/itria-github-1164344011/https://makerportal.ai/blog/itria-github-1164344011/imp reports a 42-48% decode gap over llama.cpp on consumer Blackwell. The 5090's own 5090D comparison shows the gap is just a bandwidth model.Wed, 05 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/itria-github-725205304/https://makerportal.ai/blog/itria-github-725205304/Bandwidth-bound decode math on RTX 5090D measurements backs out that only ~32% of Qwen3.6-35B's nominal weights are active per forward pass.Fri, 07 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/itria-github-867433720/https://makerportal.ai/blog/itria-github-867433720/Two 7B Q4 models exceed an 8 GB ceiling when loaded concurrently. Serial residency via llama-swap reclaims 4.2 GB of KV cache headroom.Sat, 15 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/itria-hackernews-49321813/https://makerportal.ai/blog/itria-hackernews-49321813/Pruning DeepSeek-V4-Flash-0731 cuts safetensors by 32.63%, but each 0.1-unit code NLL gain costs 0.245 units of WikiText degradation.Mon, 17 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/itria-hf-davidau-qwen38-27b-cold-fusion-gain-v11-nm-dau-neo-max-mtp-gguf/https://makerportal.ai/blog/itria-hf-davidau-qwen38-27b-cold-fusion-gain-v11-nm-dau-neo-max-mtp-gguf/GGUFs of a Qwen3-27B fine-tune with 75% linear attention layers and ~2/3 thinking-token reduction — benchmark gaps and unverified quality claims noted.Sun, 23 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/itria-hf-hauhaucs-qwen38-27b-uncensored-hauhaucs-aggressive-mtp-gguf/https://makerportal.ai/blog/itria-hf-hauhaucs-qwen38-27b-uncensored-hauhaucs-aggressive-mtp-gguf/A 3.02× speedup exceeds the 3.00× ceiling for depth-2 speculative decoding, placing FastMTP's draft depth at 3 or more with an implied acceptance rate of…Wed, 19 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/lattepanda-vs-jetson-orin-edge-ai-benchmarks/https://makerportal.ai/blog/lattepanda-vs-jetson-orin-edge-ai-benchmarks/Hardware benchmark comparing x86 SBCs, ARM CUDA Tensor Cores, and USB Edge TPUs for local vision, speech, and embedding inference.Tue, 28 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/litefs-multi-region-sqlite/https://makerportal.ai/blog/litefs-multi-region-sqlite/Mental model for LiteFS multi-region SQLite: single-primary writes, local replicas, fly-replay forwarding, and honest latency modeling.Sun, 19 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/motionlink-arxiv-260816722v1/https://makerportal.ai/blog/motionlink-arxiv-260816722v1/BEM-synthesised HRTFs match measured HRTFs on every polar localisation metric (N = 20), but torso-omission error at low rear elevations is untested.Tue, 18 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/motionlink-headphone-motion-api/https://makerportal.ai/blog/motionlink-headphone-motion-api/Quaternion attitude from the Headphone Motion API, why the reference frame resets on every launch, and the recentering pattern that fixes it.Wed, 15 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/notiary-hackernews-49362669/https://makerportal.ai/blog/notiary-hackernews-49362669/Minna indexes documents into a hybrid vector-plus-full-text store with citation-grounded chat, but requires macOS 26 beta and ships PostHog telemetry on…Thu, 20 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/notiary-on-device-semantic-search/https://makerportal.ai/blog/notiary-on-device-semantic-search/Notiary's semantic brain: converting a sentence-transformer to CoreML, deterministic storage math, and the fixed-length-input problem long notes hit.Fri, 17 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/nymic-knn-voice-conversion/https://makerportal.ai/blog/nymic-knn-voice-conversion/How kNN-VC voice conversion works: WavLM feature extraction, nearest-neighbor matching, HiFiGAN vocoding, and voice-bank coverage limits.Fri, 17 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/on-device-ai-arxiv-260822110v1/https://makerportal.ai/blog/on-device-ai-arxiv-260822110v1/A 64-shape primitive matrix and ANE counters reveal routing follows operation form, with a ~0.77 bytes-per-token law holding across fp16, int8, and 2-bit…Tue, 25 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/on-device-ai-github-1116516142/https://makerportal.ai/blog/on-device-ai-github-1116516142/Fun-ASR-Nano's 16x, 3–5x, and ~50% speedup figures are attached to different—or missing—conditions that the README never aligns.Mon, 24 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/on-device-ai-hf-obliteratus-qwen38-27b-obliterated/https://makerportal.ai/blog/on-device-ai-hf-obliteratus-qwen38-27b-obliterated/V1's −6.0pp and V2's −0.3pp MMLU gaps come from sample sizes a factor of ten apart; V1's arithmetic doesn't reproduce — the figures are not…Fri, 21 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/on-device-vector-search-swift/https://makerportal.ai/blog/on-device-vector-search-swift/How to build distraction-free local semantic search on iOS using CoreML feature extraction and native Swift HNSW index graphs, grounded in Notiary.Mon, 03 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/running-3b-llms-on-microcontrollers/https://makerportal.ai/blog/running-3b-llms-on-microcontrollers/Why parameter count isn't the bottleneck for on-device LLMs: memory bandwidth, GGUF/INT4 quantization math, and ANE lessons from Thumbdash and itria.Mon, 03 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/thumb-dash-github-1192318297/https://makerportal.ai/blog/thumb-dash-github-1192318297/The step-count formula in buun-llama-cpp's examples reduces to exactly 10 degradation steps per attention layer — 6 codec tiers × 2 KV sides minus 2.Sun, 16 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/thumb-dash-hackernews-49279500/https://makerportal.ai/blog/thumb-dash-hackernews-49279500/Measured Q4 GGUF sizes show two 7B models consume 8.4 GB, 0.4 GB over DLLM's ceiling, leaving no room for the embed model or KV-cache.Thu, 13 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/uma-8-beamforming-iphone/https://makerportal.ai/blog/uma-8-beamforming-iphone/Real-time SRP-PHAT direction finding and MVDR superdirective beamforming with the miniDSP UMA-8 mic array on an iPhone in Biquadia.Sun, 09 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/webaudio-audioworklet-dsp-voice-ai/https://makerportal.ai/blog/webaudio-audioworklet-dsp-voice-ai/How to build zero-glitch AudioWorklet streaming, Schroeder reverb tails, and formant filtering for real-time speech and Voice AI in the browser.Mon, 03 Aug 2026 00:00:00 GMThttps://makerportal.ai/blog/webgpu-benchmark-browser/https://makerportal.ai/blog/webgpu-benchmark-browser/Verification-first WebGPU benchmark methodology: warm-up, queue completion, CPU cross-checks, honest FLOP accounting, and cloud crossover math.Sun, 19 Jul 2026 00:00:00 GMThttps://makerportal.ai/blog/why-we-ship-small/https://makerportal.ai/blog/why-we-ship-small/The case for narrow products, strong opinions, and releases that can still surprise their makers.Sat, 11 Jul 2026 00:00:00 GMT