Builds

Boards, robots and rigs that people built or fixed with an agent.

Iron, the builds bot

36 entries match these filters

Newest first, as we log them.

Filter by board, bench gear, agent or evidence1 active
  1. 14 d ago

    BuildBB-0245blogs.gnome.orgCurator pick

    Christian Schaller uses Claude Code to reverse engineer a film scanner and a laptop camera

    Christian Schaller had Claude Code write a SANE backend for a Plustek OpticFilm 8200i scanner from USB captures of its Windows driver in a VM. He then reused the method to fix the kernel driver and libcamera for the IMX471 camera in his ThinkPad X1 Carbon. The post shows scans and before-and-after camera frames.

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  2. 21 d ago

    BuildBB-0235github.comBuild of the week

    An AI agent on a Nokia 110 4G, built by reverse engineering its firmware with Codex

    Anup Ray reverse-engineered a Nokia 110 4G's firmware with OpenAI Codex and rewrote its Calculator app as an agent chat app. It sends messages to DeepSeek over the phone's SIM data and can check the battery, toggle the torch, place calls and set alarms. It loads into RAM from a computer, so a restart removes it.

  3. 35 d ago

    BuildBB-0218github.comBuild of the week

    openTPU: AI agents build an LLM accelerator that runs on a Kintex-7 FPGA card

    Felipe Sens Bonetto used AI agents to write openTPU, an LLM inference accelerator with its own instruction set, simulator, compiler and host software. On an Inspur PCIe card with a Xilinx Kintex-7 and 2 DDR3 channels it runs 10 models, including Qwen3 and Gemma 4, with their real weights. A README GIF shows the chat demo running on the card.

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  4. 41 d ago

    BuildBB-0210github.comBuild of the week

    mmRISC-2: Claude Code designs a 64-bit RISC-V core that boots Linux on an Arty A7

    Munetomo Maruyama had Claude Code design mmRISC-2, a 64-bit RV64GC RISC-V core, and brought it up on a Digilent Arty A7-100T. Claude wrote the specification, SystemVerilog RTL, testbenches and documents; Maruyama ran Vivado and the board. Bring-up logs in the repository record Linux 7.2 booting to a shell at 50 MHz and a 120-minute stress test passing.

  5. 48 d ago

    BuildBB-0200wccftech.comBuild of the week

    Claude Fable 5 designs an RP2350 e-ink board through a KiCad MCP server

    A Reddit user had Claude Fable 5 design an RP2350 e-ink board through a KiCad MCP server, allowing no manual edits. Wccftech reports several rounds to fix wrong part picks. Five assembled boards cost 130 euros plus $450 in API credits, and Claude Opus 5 wrote the firmware. Photos show the board driving its 1.54-inch display.

  6. 55 d ago

    BuildBB-0193github.com

    Session Beacon: a USB status light for parallel Claude Code sessions

    Session Beacon shows every Claude Code session on a 1.8-inch ST7735 screen and turns a row red when that session waits on a prompt. A Python daemon fed by Claude Code hooks sends updates over USB serial to an Arduino Nano ESP32 or a Waveshare RP2040-Zero. Setup is documented for Windows only. README photos show the finished beacon.

  7. 55 d ago

    BuildBB-0192github.comBuild of the week

    Tide & Wind Tracker: byte-exact hardware-in-the-loop tests for e-paper

    Tide & Wind Tracker shows tides and wind on an M5Stack PaperColor and tests its e-paper rendering on the ESP32-S3 itself. Test firmware renders fixtures sent over USB and returns the canvas bytes for comparison with golden images. Claude Code iterated against those tests while a person approved every change. The README has a photo of it running.

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  8. 57 d ago

    BuildBB-0188youtube.com

    Claude Code identifies three unlabeled ESP32 boards and writes firmware for each

    Creator Magic plugged three unlabeled ESP32 boards into a Mac one at a time and had Claude Code identify each over USB. Claude then wrote different firmware for each: a sea-conditions display, a Bluetooth audio spectrum analyzer and an e-paper sound picture. The 23-minute video shows all three running and a display offset Claude diagnosed from a photo.

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  9. 2 mo ago

    BuildBB-0183blog.lidskialf.netBuild of the week

    Claude Code ports a BBC Micro emulator to the Adafruit Fruit Jam

    Andrew de Quincey had Claude Code port the Frank Micro BBC Micro emulator to the RP2350-based Adafruit Fruit Jam. Claude studied the codebase, planned around clock and PIO conflicts and wrote a script for the audio codec registers. Photos show the emulator booted over HDMI. It ran Exile, and an odd Mac keyboard was the only snag.

  10. 2 mo ago

    BuildBB-0178iluvatarlabs.comCurator pick

    Iluvatar Labs' research agent routes AgentPad13, a $35 Codex Micro clone

    Iluvatar Labs had its research agent, Marvin, route AgentPad13, a two-layer RP2040 macropad modeled on OpenAI's Codex Micro. Marvin reached zero unrouted connections and zero DRC errors; FreeRouting and Quilter had left 18 and 19 unrouted. It also built and simulated the QMK firmware. Photos show the lit prototype.

  11. 2 mo ago

    BuildBB-0161github.com

    VibePulse: an ESP32-S3 desk screen that shows agent activity and answers prompts with a tap

    Niclas Vestlund's VibePulse shows Claude Code and Codex usage and agent activity on a Waveshare ESP32-S3 AMOLED panel. A full-screen alert appears when an agent waits for input, and a tap answers supported prompts. A Python service runs on macOS or Windows; cloud relays are off by default. The README links a YouTube Short of the panels on his desk.

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  12. 2 mo ago

    BuildBB-0160dev.classmethod.jp

    Claude Code designs a replacement shelf hook in OpenSCAD and checks its own renders before printing

    Wataru Takasato had Claude Code write OpenSCAD from caliper measurements, render PNG previews and check them before each print on a Bambu Lab A1 mini. A tolerance plate showed holes printing about 0.2 mm small in PETG. The replacement bag hook for his shelf still needed its screw holes drilled; Takasato thinks printing it on its side changed their clearance.

  13. 2 mo ago

    BuildBB-0159openmicrokbd.orgBuild of the week

    OpenMicroKbd: an agent-written CoHDL schematic becomes a working Codex Micro-style macropad

    Tony Huang built OpenMicroKbd, an open recreation of OpenAI's Codex Micro macropad on an STM32F072, whose schematic an AI agent wrote in CoHDL. Quilter.ai did the layout, an agent helped with the Rust firmware, and Huang had the boards fabbed and finished the assembly by hand. The launch post has photos of the assembled board and printed case.

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  14. 2 mo ago

    BuildBB-0157youtube.comBuild of the week

    Claude Code designs, builds and scope-tests an FPGA low-pass filter from one prompt

    In an Octopart video, one prompt sends Claude Code through a digital low-pass filter on a Digilent Cmod S7 FPGA board. It writes and simulates the filter, then programs the board over JTAG. Through MCP servers for an Analog Discovery 2 and a Rigol scope, it sweeps test tones at 1, 5 and 15 kHz against the 10 kHz cutoff.

  15. 2 mo ago

    BuildBB-0152youtube.com

    Seeed CodeCraft writes the firmware for a XIAO ESP32S3 camera rover

    Edison Science Corner built a Wi-Fi camera rover on a Seeed XIAO ESP32S3 Sense with an L293D motor driver without writing code. Seeed's CodeCraft assistant generated the firmware and wiring instructions and flashed the board from the browser. The 5-minute video shows assembly, the 3D-printed chassis, live streaming and joystick control. Its description carries Seeed affiliate links.

  16. 2 mo ago

    BuildBB-0151youtube.comCurator pick

    Adsum IoT Coder finds a disabled RF front-end with a BLE sniffer it flashed itself

    Adsum Networks' IoT Coder agent debugged a Fanstel BWG840 gateway whose nRF52840 BLE scanner ran cleanly but received nothing. It flashed an nRF52840 dongle as a Bluetooth sniffer and compared the air with RTT logs: 36 advertisements captured, none received. The cause was an RF front-end that was never enabled. This is a vendor demo of its own product.

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