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5

I don't know if the amperage is additive with each additional motor Yes, amperage is additive. the Arduino cannot handle over one amp but 0.24*5>1 That is correct. But the stepper motors should never be powered through the Arduino. You should connect a fitting power supply directly to the stepper drivers. That way the needed current flows past the ...


0

Ok first, you need a battery for all this to work. The solar charge controller won't drive into nothin', that is not what they are designed to do. Its full name is "solar battery charge controller". Size the battery any way you like, just make sure the charge controller knows what kind it is, so it sets the proper charge curves and doesn't ...


4

Should I power the Arduino with the buck converter parallel to the same PSU (the 12V 20A Solar Charge Controller) I'm using for the pumps Yes. However I wouldn't use a 9V buck regulator, but a 5V one and feed it to the 5V pin. That way you bypass the wasteful LDO on the Arduino, and when running from solar every bit of power saving you can muster helps. ...


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