I am a total newbie. I want to make a blinking necklace: So my system must be super compact (like a 10 euro cents sphere)
microcontroller LED battery and resistance I guess
Which microcontroler small enough can I program with Arduino ? (a ATtiny4 would be good?)
Can I link those elements just with wires to avoid the place taken by a board ?
It would really help me to know the answers of those questions ;)
Thank you very much in advance for the time you will give me !