| Part | Qty | Source |
|---|---|---|
| 2x20 40pin 2.54mm Female Straight Pin Header | 1 | Aliexpress |
| 2 x 5 x 7mm LED (pick your favorite color) | 16 | Aliexpress |
| 9 pin 470R Resistor Network Array | 2 | Aliexpress |
If you have a 3D printer, print the assembly jig, and plug in all the LED's observing polarity. I cut them all down, except for one, to ease with insertion into the PCB.
Pin one on the resistor array's both point towards the middle of the PCB.
On the PASCAL.img disk there a various blinken programs and exectutables written in Turbo Pascal 3.0a.