Sparky v2 – analogue and digital

Veroboard with wires, an arduino, and some smoothing capacitorsI’ve soldered up most of the board for Sparky v2, meaning I now know which pins connect where. The Arduino has analogue pins that can also be used for digital input, so although I’m technically out of digital pins, that’s not really a problem. I’ll be testing that theory soon, using a digital read instead of an analogue read, and I’m pretty sure it’ll end up fine. I’ve written the code, soldered most things, but need some small push buttons to test the code entirely, and I don’t want to put on the stepper driver chip before it’s entirely tested.

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