What happens when you combine an Arduino-based microcontroller with a palm-sized aluminum box and clicky buttons? A fidget ...

Here we describe an electronic system that uses a dedicated water-level sensor to switch off the pump motor as soon as the ...

There’s a lot of laboratory equipment out there that the casual hobbyist will never need to use, but that doesn’t mean you ...

Additional circuitry required. One Diode (I use 1n4004) - pole/cathode at tx pin other at rx pin. 4k7 Ohm resistor between rx and 5V (3.3V also works). Same at the other microcontroller but you don't ...