The Arduino is a powerful platform for interfacing with the real world, but it isn’t without limits. One of those hard limits, even for the Arduino MEGA, is a finite number of pins that the ...

I had one of those why-didn’t-I-think-of-it moments this week, reading this article about multiplexing I2C on the ESP32 microcontroller. The idea is so good, and so simple, that it’s almost silly that ...

The project shows how the Arduino was connected to the AD4476 breakout board and capacity sensor in order to detect/react to touching. There are two long lines in the AD7746 breakout board that ...