Six times Arduino IDE Blink demo
From left to right, ESPs 8266-01 and 8266-12, Arduinos Pro Mini (3.3V, 8MHz), Pro Mini(5V, 16MHz), Nano, Micro
Got help on arduino.cc — although I have the 3.3V Pro Mini, I seem to have 16MHz crystal…
http://forum.arduino.cc/index.php?top...