Project log - Pinball machine

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Bergo
Posts: 323
Joined: Wed Jan 05, 2011 4:57 pm

Re: Project log - Pinball machine

Post by Bergo » Tue Apr 19, 2011 10:41 pm

did you try cramming the magic blue smoke back in?

rsilk
Posts: 305
Joined: Wed Dec 01, 2010 11:55 am

Re: Project log - Pinball machine

Post by rsilk » Tue Apr 19, 2011 11:12 pm

You only get blue smoke from semiconductors. Resistors give black stinky smoke.

Anyway, let's try this again:

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rsilk
Posts: 305
Joined: Wed Dec 01, 2010 11:55 am

Re: Project log - Pinball machine

Post by rsilk » Fri Apr 22, 2011 12:53 am

So it turns out I had three problems with the controlled lamps:

* The undersized resistors which melted
* A bug in the controller software which caused some of the lamps to latch on (which is why only the one resistor popped before I caught it)
* A wiring error in the power supply was feeding 50V to the bulbs instead of 18V. This vaporized all of the light bulbs once I got the above 2 issues fixed.

I spent tonight replacing about 50 light bulbs (sigh), and now everything works great!

Got some video:

http://youtu.be/BqWAM7FzRpA

nathanwiebe
Posts: 18
Joined: Sun Feb 13, 2011 5:12 pm

Post by nathanwiebe » Fri Apr 22, 2011 10:26 am

How much power does the whole system draw?

rsilk
Posts: 305
Joined: Wed Dec 01, 2010 11:55 am

Re: Project log - Pinball machine

Post by rsilk » Fri Apr 22, 2011 10:39 am

Not sure, I haven't measured it yet. The line fuse is 8A though, and I haven't blown it yet :D

Commercial pins typically draw about 4A, though. So somewhere just shy of 500W.

rsilk
Posts: 305
Joined: Wed Dec 01, 2010 11:55 am

Re: Project log - Pinball machine

Post by rsilk » Tue May 31, 2011 3:10 pm

I've got the prototype machine working to my satisfaction - now time to build the real thing.

Parts are ordered, I've started designing the game, and the software stack is beginning to take shape. Getting there, slowly.

rsilk
Posts: 305
Joined: Wed Dec 01, 2010 11:55 am

Re: Project log - Pinball machine

Post by rsilk » Tue Jun 14, 2011 12:59 am

Spent about 5 hours tonight stripping everything off the old playfield. There is a ridiculous amount of stuff on there, even after all the wire comes off.

Also bought some fancy plywood to form the base of the new one. Construction begins this week!

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Travis7s
Posts: 56
Joined: Mon Jan 10, 2011 9:45 pm

Re: Project log - Pinball machine

Post by Travis7s » Thu Jun 16, 2011 8:46 pm

What game was the playfield originally from?

rsilk
Posts: 305
Joined: Wed Dec 01, 2010 11:55 am

Re: Project log - Pinball machine

Post by rsilk » Thu Jun 16, 2011 11:54 pm

Alien Poker. Bought just the playfield off ebay a long while ago, it's a complete junker.

rsilk
Posts: 305
Joined: Wed Dec 01, 2010 11:55 am

Re: Project log - Pinball machine

Post by rsilk » Tue Aug 02, 2011 11:32 pm

Been a while since the last post, but the project is progressing nicely.

The ball trough and bottom part of the playfield are populated and wired up, so it's possible to play a "game" of pinball right now:
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I sketched out a basic game layout. This will probably change:
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Work is starting on the top part. I've got the orbit shots and the ball lock in so far:
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I'm waiting for some parts to arrive, so work on the upper playfield is stalled. Time to make some starburst inserts for the lights:
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Prototype looked like ass:
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Got the machine tuned up, a sharp bit, and a better model for the part. Looks much better now!
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