BOM
| Qty | Description | Notes |
|---|---|---|
| 1 | compression spring 10mm length 10mm OD | |
| 3 | Solder terminal lugs, Keystone Electronics 4000 | same as in the Jubilee BOM |
| 2 | resistors 8.2K | |
| 3 | M3 buttonhead screws 6mm | |
| 1 | half inch diameter steel ball |
Two of the lugs shuold be wired to the io pin of the duet board via on resistor each. The third connects directly to GND.
