This great little board is supplied as a kit, with the PCB, Capacitor, Headers & a Chip programed with the code, ready to go. Once you have assembled the kit, connecting up a keypad like our 3x4 membrane matrix keypad. will give a character output at 9600 BAUD when a key is pressed. The keys do not auto-repeat, making key entry easier.
Key output from a 4x4 matrix keypad
1 2 3 A
4 5 6 B
7 8 9 C
* 0 # D
With a 3x4 matrix keypad, ignore the right hand column.
If you require these assembled, please contact us. There will be a charge for this service.