Saskatoon TechWorks Forum

by **Bergo** » Mon Apr 04, 2011 8:56 am

awesome! good work Ryan!

by **Kaldonis** » Mon Apr 04, 2011 10:38 am

You're getting closer and closer to that $5 I promised you.

by **rsilk** » Wed Apr 13, 2011 8:52 pm

by **Odemia** » Wed Apr 13, 2011 9:03 pm

Starting to look like a real pinball game, with a fancy screen. Very nice.

by **rsilk** » Wed Apr 13, 2011 11:27 pm

Got the lamp driver board routed and drilled (yay cnc!)

CNC Routing:
http://youtu.be/_8pEI5M7a9A

CNC Drilling (best thing ever):
http://youtu.be/UwgjgL_XnpM

by **nathanwiebe** » Thu Apr 14, 2011 9:25 am

Very impressive!

by **rsilk** » Fri Apr 15, 2011 8:32 am

Completed lamp driver board:

If all goes well I should have the lamps firing this weekend sometime. Need to terminate a bunch of connectors first, and write some code to strobe the matrix.

by **rsilk** » Tue Apr 19, 2011 9:55 pm

Well, that went poorly:

Now to figure out what I boned up...

by **rsilk** » Tue Apr 19, 2011 10:04 pm

It's a mystery to me... here's the schematic:

The PNPs at the top are tip107, the NPNs are the bottom are top102.

Oh, the pullups are all 10k, and the resistors attached to the bases are all 470ohm.

by **rsilk** » Tue Apr 19, 2011 10:21 pm

Hah, I'm an idiot. This is why we do the math on resistors instead of just grabbing one that looks right.

3/4W through a 1/4W resistor = smoke escape

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