I've a question and apologies if it's been asked already but I couldn't find a definitive answer.
I'd like to power the Arduino from an external power supply, and use a more powerful supply to power steppers etc. I've researched this on the net and found many responses, often conflicting, as well as some "don'ts" such as injecting >6V to the 5V pin on the Arduino etc.
So: 1. to power the Arduino and minor ancilliaries (I have purchased a 12V 1A wall wart power supply) should I break out its supply to go in parallel to both the Arduino via the 5 mm power plug and also to the breadboard? I realise that if this is recommended it would also need a connection from the Ardunio GND to the breadboard GND. Or is it sufficient to just plug the 12V 1A supply into the Arduino and use the Arduino's 5V to power ancilliaries like small steppers etc?
- To power larger steppers etc, I have a 12V 33 A 400 W power supply. Do I just plug this it to a power bus (ie the bus part of a breadboard i.e. the +ve and -ve pins along the perimeter) and take connections from here to the Arduino's input plug? or is there some other recommended method of powering both?
Expert guidance will be greatly received.