Making an Arduino shield can be simpler than you think. This time I designed one to program Attiny and Atmega ...
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 ...
Hackers have been building their own basic oscilloscopes out of inexpensive MCUs and cheap LCD screens for some years now, ...