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…