Talk:RepRapDiscount Full Graphic Smart Controller
There is a link to RepRapDiscount Full Graphic Smart Controller Schematics. The schematic has an error. EXP2 connector pin numbers are correct. EXP1 Pins are wrong. To correct this, copy the EXP2 pin numbers on top of the EXP1 pin numbers, so EXP1 has pin 1 to VCC and pin 10 to Beeper.