esp32 & esp8266
Turn Escape Room Puzzles into Home Assistant Devices with ESP32
Two open source Arduino libraries turn escape room puzzles into Home Assistant devices over MQTT. Here's the parts list and the I2C wiring to…
iot & smart home
IronEar’s ESP32-S3 Sensor Hears 500 Sounds, Skips the Camera
An open-source ESP32-S3 sensor node classifies 500+ household sounds on-device and reports to Home Assistant over MQTT or a private LoRa mesh.
microcontrollers
warecache Sensor Bins Count Your Parts Using an STM32H723
Sensor-equipped bins weigh their own contents and report over MQTT, so the parts count stays honest. Inside the STM32H723 hardware behind warecache.
esp32 & esp8266
Build a $10 ESP32-C3 Fridge Monitor That Logs Its Own Data
A $10 XIAO ESP32C3 and a DHT22 keep 30 minutes of fridge temperature history on-device, cutting network traffic by 92 percent. A tidy weekend…