Front Panel Assembly Sheet Rev 1
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Parts List / Assembly Order
| Qty | Value | RefDes | Qty | Value | RefDes | |
|---|---|---|---|---|---|---|
| 4 | 10K, 0805 (Rear) | R33, R36-R38 | 32 | LED, 5mm (NOTE 3) (Front) | DS0-DS31 | |
| 32 | 1K, 0805 (NOTE 1) (Rear) | R1-R32 | 1 | HEADER, RT ANG, 1x2 (Rear) | J1 | |
| 3 | 2.2K, 0805 (NOTE 2) (Rear) | R34-R36 | 1 | HEADER, RT ANG, 1x5 (Rear) | J2 | |
| 32 | SW, Pushbutton, 6mm (Note 4) (Front) | SW0-SW31 | 1 | HEADER, RT ANG, 1X4 (Rear) | J3 | |
| 4 | MCP23017-E/SS (Front) | U1-U4 | 1 | HEADER, RT ANG, 2X2 (Rear) | J4 |
Notes
- Note 1 - 1K ballast LED resistors. Pick value for how bright you want LEDs at your operating voltage.
- Note 2 - R34 and R35 are 2.2K I2C terminators. Needed for 3.3V operation and 400 KHz operation. R36 is INT* pullup.
- Note 3 - LEDs - I like diffused Orange LEDs. I don't like clear LEDs.
- Note 4 - Pick the height you like. I like 6mm high. You might like taller if you use keycaps.
