Pinball, pt 3: Electronics

I put in an order to Digikey for $70 (!) of electronics, including some high power MOSFETs for the solenoid drivers:

, some serial LED drivers, some serial input multiplexers,

, some parts for making molex connectors,

, three CPU boards (basically cheaper, more powerful, lower level Arduinos),

...and a ton of stuff for audio output, including this surface mount op-amp, which turned out to be *really tiny*



I made some nice compact solenoid driver boards

Looking at schematics for actual machines they've got all kinds of weird stuff, however just a MOSFET, two resistors, and a line to the CPU were enough to fire the solenoids just fine. I wish I had some way to turn them off in case the CPU locks up while one is turned on, but I don't know what that would be, and as far as I can tell 'professional' machines don't do it either.

Posted Sunday, April 01, 2018
at 05:41 PM


Tags: Blog Post, Pinball, Archive, P1,


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