Retro Horse Derby Game Board with Neopixels showing Reaction Game Status

Sat 2018.01.12

Thanks @allObjects for the links to the stepper relays. I searched but didn't find suitable images. Boy do those bring back memories.

'Does that mean you have 18 pin ball machines?'

Look closely at the bottom edge of the image, then click the right arrow button (upper right of image) and advance to the third slide

https://hanfordsentinel.com/features/nostalgic-carnival-game-makes-one-final-appearance/article_f1a2a497-669e-51c7-86eb-bce1393bd6e1.html

Looking over the MCP23017 for lane switch decoding

http://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf