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9V battery

Hi, everybody! This is not my first robot, but it *is* the first robot I have built without a kit! It's based on a robot built by a guy known as Brainergizer (I'll … Read more

Battery help

 

Hi 

What is the difference of a 9v battery and a battery holder that can hold 6 aa batterys 3 on each side? (it comes out to have 9v) Which one is better for the arduino or any other microcontrollers?? 

 

9V battery keep blowing up!!!

Ok I have a problem that just does not make sense but since I am a newbie I thought I would throw this up and see if I can get some pointers.