m0116_usb

This project is completed and will not get updated anymore.

QMK compatible drop-in replacement PCB for the Apple M0116

The PCB is built entirely with THT parts to keep a somewhat "vintage" look to it and it uses the fullsize 40-pin DIP package ATmega32A. The controller is placed in the exact same location as the one on the original PCB meaning that it can be accessed through the plate cutout under the spacebar.

Partslist

Count	Part
1	ATmega32A 40 pin DIP (32L works too)
1	40 pin DIP socket (optional but highly recommended)
1	2x3 pin header 2.54mm (for ISP flashing)
1	JST PH 2mm 4pin connector + cable
1	mini usb port
1	500 mA polyfuse
2	6mm momentary push buttons
1	16 MHz quarz crystal
1	4.7 uF electrolytic capacitor
2	100 nF ceramic disk capacitor
2	22 pF ceramic disk capacitor
1	10 kΩ resistor
2	68 Ω resistor
1	1.5 kΩ resistor
2	3.6 V zener diode (DO-35 BZX55C3V6)
81	universal switching diode (DO-35 1N4148)

Count

Part

ATmega32A 40 pin DIP (32L works too)

40 pin DIP socket (optional but highly recommended)

2x3 pin header 2.54mm (for ISP flashing)

JST PH 2mm 4pin connector + cable

mini usb port

500 mA polyfuse

6mm momentary push buttons

16 MHz quarz crystal

4.7 uF electrolytic capacitor

100 nF ceramic disk capacitor

22 pF ceramic disk capacitor

10 kΩ resistor

68 Ω resistor

1.5 kΩ resistor

3.6 V zener diode (DO-35 BZX55C3V6)

universal switching diode (DO-35 1N4148)

Some pictures of the first finished PCB

Drop-in replacement USB PCB for the Apple M0116 powered by QMK