Project log - Pinball machine

[Bergo]

awesome! good work Ryan!

[Kaldonis]

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

[rsilk]

[Odemia]

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

[rsilk]

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

[nathanwiebe]

Very impressive!

[rsilk]

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.

[rsilk]

Well, that went poorly:



Now to figure out what I boned up...

[rsilk]

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.

[rsilk]

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