Hello :slight_smile: , I want to buy a muscle sensor witch is : https://www.ebay.fr/i/202299952770?chn=ps&dispItem=1 And it needs to work a positive and negative reference voltage : Vs- , Grd (0V) and Vs- We can do that with 2 9v baterie like that in the picture but i want to do this just with on…

how to power a muscle sensor ?

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