8/25/2023 0 Comments Fritzing 9v power supplyYou can use either the 2.1 X 5 or the 2.1 X 5.5, both will fit. I did this for my Mega but it should work with any of the Arduino boards with a 2.1mm jack. It is also possible to wire a battery adapter directly to the pins but I wanted to use the DC power jack and not have any wires running to the pins than I have to. Granted, the 9 Volt isn't the most efficient battery for the job and it's expensive compared to others, but it is widely available and compact. This is super simple but very useful if you are in a hurry or just like to do things yourself and on the off chance you didn't know, this is about the easiest way to add mobile power to your Arduino.Īfter looking at a number of battery power solutions for Arduino ranging from Lithium Backpacks to Minty Boost kits I decided I didn't want something even that complicated.
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