It became so popular that the ATtiny85 even got packaged into USB dongle formfactors, like the DigiSpark boards. Well, you might not know this, but your Android smartphones can also work with USB ...

My first thought was to go with the venerable ATtiny85, and since I already had ... the plan was to switch over to the SOIC-8 version of the chip which would be far more appropriate for something ...