ESP32’s Arduino didn’t have a microsecondsToClockCycles() function yet so I commented it out, multiplied by 240 MHz, and left a hard-coded constant in my code.

No multimeter handy (for shame)? Well, as it turns out you can actually measure capacitance using your Arduino Uno, with no external components, and only ~20 lines of code.

Renesas’ RL78/L23 16-bit MCUs provide LCD control and capacitive touch for responsive HMIs in smart appliances, electronics, ...

The vertsatile Uno Rev3 is capable of more than just a board for experimental and education projects ...