Hello. Im designing different electronics devices, mostly based on avr, arm MCUs and boards with them like arduino, stm-discovery etc. I can help you with your deal and since im new one here I can do it cheaper then anybody.
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Hello again. First, I dont see any atachment. Of course dont know your full idea of implementation this, but generaly its clear and not complex. I'm doing from time to time something that uses stepper motors for some actions.