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BB Blue JST polarity

agentsimon

I cannot find details on the three pin JST battery connectors layout apart from it's positive, sensing and earth. My question is which pin is the positive, is it the one nearest the edge of the board or is this the earth pin? 

I've got a 2P lipo battery but when I plug it into the board all the LEDs flash on and off together. I'm pretty certain that's not meant to happen but can't find any information on what it indicates. 

Any help greatly appreciated. 

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  • Easiest way is to measure. If you need check battery pinout use DC voltmeter mode on multimeter. If you need to check what pin on board corespond to groud use continuity mode, find some known gound on poin header, test point, or for example connector casings are usualy connected ground. One probe place here and the second probe place on battery connector pin. One pin will beep and this one is ground.

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  • Easiest way is to measure. If you need check battery pinout use DC voltmeter mode on multimeter. If you need to check what pin on board corespond to groud use continuity mode, find some known gound on poin header, test point, or for example connector casings are usualy connected ground. One probe place here and the second probe place on battery connector pin. One pin will beep and this one is ground.

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