Making an Arduino shield can be simpler than you think. This time I designed one to program Attiny and Atmega ...

Arguably, the ATmega328P is being left behind as ‘the Arduino processor’ because Arduino’s are following the rest of the world and going 32bit.

Order your pcb design at jlcpcb for $2 (24 hours turnaround time). This is the most complex or detailed soldering I've done so far, the QFN20 package is very small but still not impossible to solder ...

This application uses RTC, 32.768 kHz crystal, external clock, Event System and TCD to measure the accuracy of the external crystal. The external clock is the reference clock, which is used to measure ...