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Alice type ergo keyboard using only THT parts

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Sesame

CC BY-NC-SA 4.0 kofibadge

Alice like ergo keyboard using only THT parts

drawing

Partslist

Count Part Reference LCSC Part #
1 ATmega32A 40 pin DIP (32L works too) U1 C12703
1 40 pin DIP socket (optional but highly recommended) U1 C2332
1 USB4085-GF-A USB Type-C socket USB1
1 500 mA polyfuse F1 C207122
2 6mm momentary push buttons Boot,Reset C620202
1 16 MHz quartz crystal XTAL1 C16212
1 4.7 uF electrolytic capacitor C1 C47879
2 100 nF ceramic disk capacitor C2,C3 C254092
2 22 pF ceramic disk capacitor C4,C5 C254096
1 1.5 kΩ resistor R1 C58620
2 68 Ω resistor R2,R3 C714279
2 5.1 kΩ resistor R4,R5 C714593
1 10 kΩ resistor R6 C119347
2 3.6 V zener diode (DO-35 BZX55C3V6) D1,D2 C2508
66 universal switching diode (DO-35 1N4148) D3-D68 C14516

The USB port can be found here:
https://www.digikey.com/en/products/detail/gct/USB4085-GF-A/9859733


drawing

drawing

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

CC BY-NC-SA 4.0