This version uses 5 IR emitter/receiver pairs to read five of the nine potential pip locations on a die face. Five is the minimum number of locations you have to look at to definitively read the orientation of the die. I had to file down the edges of the detectors to get them pip-distance apart and place the emitters directly behind the detectors so they’d get maximum reflection from the surface (And there is really no other place to put ’em.) On a white area of a die it returns a really nice signal. Which means what I’m really detecting is a lack of a pip, counting the white areas rather than the dark ones.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.
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