i would like to connect a 9V battery to the quickstartboard and the LCD be powered from the board.
Which pin should i use ?
LCD : RX = pin 12
gnd = pin 39
5V = pin ???
9V: + on pin 40 and - on pin 39
I have fried my previous quickstart board by misconnected the 9V on the little holes. now i'm a bit reluctant to try something.