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Need help with T2 solenoid driver circuit!
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1UP:

--- Quote ---I just started looking at this thread, and I think you guys are putting your back EMF diodes in the wrong place.
--- End quote ---
ErikRuud:
Here, I will post the link here as well.

Weeder Technologies

When I originally found the Weeder Site, he had an option to buy the boards as a kit.  He seems to have dropped that option.
Elkor:
Well?   did you get it working? don't leave us all in suspense!  ;D
1UP:
Sorry for the wait, I've been sick!
Dav:
Good job.  I don't know anything about the IPAC but generaly if you're too high on the current the resistance in your load is too low, it acts like a short circuit.  So it can't be good for it.  I wouldn't worry about the relay.  I assume he was conservative in his maximum but you're way over.  Driver boards usually have a small transitor first then the large transistor so they step up gradually in current draw.

I haven't done anything with the parallel port yet, I've been busy writing Z80 code and manufacturing circuit boards for my Ms Pacman project.  I might see if I can find the source for it though.  Maybe someone who's worked with parallel ports before will work on it.  It may not be that difficult, but I haven't hooked up an led to my port yet so I can test.

Dave
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