2 layers66.5 × 49 mm

Rele esp12f
techmiguel/smartRele
Single-channel Wi-Fi relay module based on the ESP-12F (ESP8266) for 110–120 VAC and loads up to 10 A. Open hardware in KiCad 10, ready for full assembly at JLCPCB.
34 partsCERN-OHL-W-2.0
Printed circuit boards designed in KiCad and published on GitHub, each with its parts, layers and size, its README and its files; open any of them in PCBKit.

techmiguel/smartRele
Single-channel Wi-Fi relay module based on the ESP-12F (ESP8266) for 110–120 VAC and loads up to 10 A. Open hardware in KiCad 10, ready for full assembly at JLCPCB.

techmiguel/stillpoint
Open-hardware 60 GHz radar ceiling sensor: presence & fall detection without a camera. Matter over Thread, KiCad 4-layer Ø60 mm board.

techmiguel/neo-robot
Open-source ESP32-S3 voice assistant: offline wake word with TinyML (TensorFlow Lite Micro + ESP-NN), Whisper speech-to-text, local LLM (Ollama, Gemma, Qwen) or Groq, streaming TTS.