Circuit Digest

Smart Grid in IoT Using Arduino UNO R4 WiFi

The hardware was assembled by connecting the Arduino UNO R4 WiFi, the PZEM 004T, the current transformer, and the OLED ...
How-To Geek on MSN

This $5 ESP32 board is the ultimate choice for DIY smart home projects

It's why DIY smart home projects suddenly got cheap (and actually doable) ...