PC-AXE
Hand-designed PCB, no AI. First-party hardware files on GitHub.
Best Hardware on X
Robots, Pi boxes, sensors and 3D-printed machines posted with photos or a build guide, not just a render. 50 builds on this page, each with the original post.
VIVE Face Tracking Bridge
Stream face and eye tracking from VIVE standalone headsets to VRCFT over Virtual Desktop and Steam Link.
LayerLift
Timelapses from 3D-printer slicer G-code. Filament, plate, lighting, and camera are yours to set. Files stay on device.
S3 PX4 Flight Controller
Open-source FPV flight controller. ESP32-S3, EasyEDA project and gerbers. Designed with Codex and GPT-6 Astra.
mt76-usb-macos
Userspace libusb driver for the Alfa AWUS036AXML. 6 GHz sniffer, monitor mode, and packet injection on MacBooks without a 6 GHz radio.
Button Box
A screen-free box so kids can send and receive WhatsApp voice notes. Open-sourced, with 3D-printable files.
NTRIP Client
Open-source NTRIP client in Python and C, for RTK correction data from a caster. First-party from Ardusimple.
Microduck on Isaac Lab
The open-source duck robot, ported to NVIDIA Isaac Lab so it can run a different physics stack.
Finite Systems
AI-native CAD in the browser. The author designed a physical coaster in it, then manufactured it.
Phasor Professional
AM radio antenna design software started in college in 1998. Still used. Source is public now.
omarchy-sparkdash
DGX Spark GPU, VRAM, temps, and tok/s in the Omarchy Linux top bar.
Microduck
25 cm open-source biped you train in sim and run on the real robot. $399, ships before Christmas.
RetroGameForge
Wi-Fi NES/SNES dev cart that stays in the console. Homebrew tools plus a new 8-bit game on Kickstarter.
cuda-metal
CUDA on Apple Silicon. Same kernels, rewritten to Metal. A 3D fluid sim that took 60s on CPU ran in 6s on the laptop GPU.
appletd
Realtime depth and landmark tracking on the M4 Pro GPU. Stable 60fps, inference stays on-device.
camsnap
USB webcam capture for agents, now with a rotation protocol so a claw can look around a 360 camera.
Pebble Phone Finder
Pebble watch app that tells you if you are getting closer to your lost Android phone.
tm20
Driver for a TM-20 thermal printer so ChatGPT can spit out whatever art it wants onto paper.
kimi-chip
RL harness that treats ASIC design as a hill-climb. RTL and GDS are public. Write-up at luoluo.ai.
sparktop
Dashboard for multi DGX Spark setups: inference throughput, GPU processes, and more.
Qwen3.8-27B NVFP4 on DGX Spark
Day-one Qwen3.8-27B deploy: NVFP4, 262K context, one DGX Spark, one command. Full reproducible stack.
Qwen3.8-27B FP8 on 2x 3090
27B on two consumer 3090s at ~75-85 tok/s with NVLink. Tool calling, reasoning, vision, MTP. Full deploy open-sourced.
gateto.space
Bid to beam your URL or X handle into space on a real LoRa radio and directional antenna.
handMediaPipeHands
85-line finger-tracking toy for Physical AI video cleanup. Claude Code plus MediaPipe.
Google Home MCP
MCP for Google Home, reversed from home.google.com. Keys stay on device.
esp32-ai
Full ESP32 AI project, open-sourced.
SPIDriver Pico
RP2040 C port of James Bowman's SPIDriver. Built with DeepSeek V4 and Kimi K3.
Flutter-QNN
On-device LLMs in Flutter on Snapdragon. Gemma and Qwen via Qualcomm QNN, Hexagon NPU, local streaming.
ESP32 LED Matrix in Rust
Cheap 128×64 LED matrix driven by an ESP32. Rewrote the demo in Rust for more color depth and smoother animation than Python.
Local AI Box
A $2,300 local AI rig: two RTX 3090s for 48GB of VRAM, a dual-Xeon board and 28 cores, running 70B quantized models fully offline.
FindBot
Basement-built autonomous rover: custom BMS PCB, STM32, Raspberry Pi, and a neural net trained to push objects into a goal zone.
ESP32 Mesh Monitor
First hardware project: ESP32 mesh nodes with RTOS, MQTT scheduler, time sync and a web server to monitor anything.
Grok + Brain Sensing App
Grokathon project that lets people speak without using their mouth by combining brain-sensing tech with Grok Voice.
Inverted Lambda Teleoperation
Human-in-the-loop teleoperation infrastructure aimed at creating an open, distributed learning network for robots.
Waddle Labs – Claude Code for Robots
Connect Claude-style agent workflow directly to physical robots. Describe the task and the system writes the code to execute it in ~20 minutes.
$4,199 Claude Code Robot
Physical robot you can program directly with Claude Code or Codex to help with real-world tasks like working on cars.
Gemma Offline Translator
Fully offline portable translator running Gemma on a Raspberry Pi 5 inside a custom 3D-printed case.
ESP32 Fluidbox
3D fluid particle sim on a Waveshare ESP32-S3 AMOLED. Tilt the device, the liquid moves. Opus 5 wrote the C renderer. Repo is public.
OOMWOO – DIY Robot Vacuum
Fully open-source robot vacuum you build for about $200: Raspberry Pi, 2D LiDAR mapping, ROS2 navigation and native Home Assistant integration. No cloud.
M5Stack Real-time Pressure System
High-frequency real-time pressure sensing system built with M5Stack hardware and Grok Build.
DEF CON 34 Open Silicon Badge
This year's DEF CON badge runs open-source RISC-V silicon you can visually verify against the published RTL with an IR microscope. Doubles as a security key.
Xiaozhi – ESP32 Voice Assistant
Fully open-source framework that turns an $8 ESP32 into a real-time autonomous voice assistant with local wake-word detection.
28.9M Parameter AI on ESP32
Tiny open-source AI model running fully offline on a few-dollar ESP32-S3 chip at ~9.5 tokens/s. No cloud needed.
SeedTapper – Air-gapped Seed Engraver
Open-source air-gapped machine (Pi 5 + fiber laser) that engraves Bitcoin seed plates in titanium.
Threehalves – Centaur Rescue Robot
7-foot teleoperated centaur robot with a humanoid torso, quadruped base and quick-swap tool wrists, built for wildfires and disaster zones by a garage startup.
Axis Robotics Data Engine
Full Physical AI data collection and processing platform for training robots from simulation and egocentric video.
ESP-32 Zero-Latency Auto Aim
Custom local AI running on an $8 ESP-32 that tracks humans with zero computational delay.
Text-to-CAD
Open-source tool that turns plain English descriptions into production-ready CAD files (STEP, STL, URDF, etc.) for robotics and mechanical design.
ElRobot – Affordable Robot Arm
7+1 DOF fully 3D-printable robot arm that costs around $220, complete with CAD and build guide.
Open Source 3D-Printed AI Robot
Fully open-source expressive robot with object tracking and support for multiple AI models. STL + code released.
