Home▸ Forums▸ 68kMLA▸ Macintosh SE/30 controlling LED using Arduino via serial — #4 Post #4 by olePigeon Source Forum68kMLA Category68k Post DateFri, 5 Dec 2014 - 19:45 Original URLhttps://68kmla.org/bb/threads/macintosh-se-30-controlling-led-using-arduino-via-serial.774/ Post Step 2: Control your Christmas Lights.