Tha fios agaibh
- Aug 11, 2014
- 2,252
- Joined
- Aug 11, 2014
- Messages
- 2,252
That black thing U2 (3rd picture) is a photo switch that senses when the punch carriage returns. Its got a led on one side with a 3.3k limiting resistor, I don't know the specs, but perhaps we can figure out the ps/zener voltage based on that sensor.
Alas, I've got other projects to tackle this weekend so I may not respond for a while.
Thanks (as always) for everyones input.
Alas, I've got other projects to tackle this weekend so I may not respond for a while.
Thanks (as always) for everyones input.