| Ref | Qty | Value or Part# | Description | |
|---|---|---|---|---|
 |
C1,C2 | 2 | 22pF p2.5mm | multilayer ceramic capacitor |
 |
C3 | 1 | 4.7uF p1.5mm | electrolytic capacitor |
 |
C4,C5 | 2 | 100nF p5.0mm | multilayer ceramic capacitor |
 |
D1-60 | 60 | 1n4148 | diode |
 |
D61,D62 | 2 | 3.6V | zener diode |
 |
F1 | 1 | 100mA | polyfuse |
 |
J1 | 1 | USB4085-GF-A | USB-C connector |
 |
J2 | 1 | 2x3 p2.54mm | AVR ISP pin header (optional) |
 |
J3 | 1 | SM04B-SRSS-TB | JST connector (optional for daughterboard) |
 |
LED1,LED2 | 2 | 3mm | LED |
 |
MX1-60 | 60 | MX/Alps/Choc | Keyboard switch |
 |
R1,R7,R8 | 3 | 1.5kΩ | resistor |
 |
R2,R3 | 2 | 75Ω | resistor |
 |
R4 | 1 | 10kΩ | resistor |
 |
R5,R6 | 2 | 5.1kΩ | resistor for USB-C only |
 |
SW1,SW2 | 2 | 6x6mm | tactile switch |
 |
IC socket | 1 | 28pin narrow | IC socket |
 |
U1 | 1 | ATMEGA328P-PU | microcontroller |
 |
Y1 | 1 | HC49-4H 16MHz | crystal |
 |
cover | 1 | 95x57x2mm | acrylic component cover |
 |
screw | 8 | M2 4mm | screws for standoff |
 |
standoff | 4 | M2 10mm | standoffs for component cover |
For your convienience, here is the BOM on Octopart.