Hall Effect Latch as an encoder/counter?

[BitTwiddler]

Originally Posted by iambujo

And here is the assembled and functioning PCB. It is about 1.75"x.75". Hope it works out our pitcher this year! I used expresspcb.com's SW to do the layout and used their protoboard service for the board manufacturing.

I like the layout on your board. I suspect the LED is totally superfluous for operational purposes but will be useful in ensuring things are working. Let us know how it works out.

One of our students wired up our prototype sensor board. Its a kludge but it appears to work when we watch it with our handy-dandy voltmeter. More testing will be required. Hopefully the counter vi in the WPI library will work well with it but we aren't there yet.