TinyPocketRadio is a simple FM stereo radio based on ATtiny13A and RDA5807MP. It's powered by a CR2032 coin cell battery and can drive 32 Ohm headphones via the 3.5 mm audio plug. The board size is 38 x 23 mm. It has a power switch and three buttons: "Channel+", Volume-" and "Volume+ ".Description and project files: https://github.com/wagiminator/ATtiny13-TinyPocketRadio
very nice project, you could reduce buttons to two, short press volume+/- and long press ch+ ch-, because if you have many radio stations around then ch- is sometimes nice to have
Thank you. In fact, there are three buttons because three pins were still unused on the ATtiny ;-) Of course, you can change the button behavior in the software.
Can you share the whole project? Thank you