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on the flyback issue is that why breaker points have condensers or would that make the signal ring worst.
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The condenser (capacitor) is there so the points have the time to get far enough apart before the voltage rises to the point it would have jumped the gap when the points were closer together. If that made any sense. A snubber circuit could be made with a resistor in series with the capacitor, to dampen the ringing. I was thinking of a very small capacitor, like power supply decoupling is done for ICs with a little capacitor next to every power pin.
And to add what I said earlier: I think this invention is getting very close to where you could sell it as a finished product, in an enclosure with velcro on the back. But to get to that final step, the interface to the outside world should be hardened a little.
You don't want to be getting returns and paypal chargebacks
because someone zapped the input and it corrupted the software for example. I recall reading somewhere here that a MPGuino was acting funny and had to be fixed, although I don't recall the cause or the fix.