Hi,
I am just starting build on my 1st robot track rover and while wiring it up I realize I made a mistake and am expecting my Servos and Receiver to goes up in smoke but… somehow it is not and I can’t help but wonder why it works… Anyone here can give me an explanation why no damage was done on my receiver and servos…
My track rover is powered by a 6 cell 1.2v NiMah AA size batteries (fully charge draws about close to 8v current) towards the brush motor controller board (Cytron smartdrive dual 10 (with UBEC) https://www.cytron.com.my/p-mdds10). This motor controller board is then connected to my RC Receiver (Frsky X8R 8 Channel RC receiver https://www.frsky-rc.com/product/rx8r/) via a servo BLACK/RED/White cable, which than power all my servos and switch. In one of the Receiver channel I plug in another battery pack of 4 x AAs 1.2v NiMah batteries with the intention of powering all my servos and switch.
However, I make a mistake of not removing the RED wire that run from my motor controller board to my Receiver. Meaning I am sending 5v (after UBEC cut off) of current to my RC receiver via the motor controller board, and on the one channel of my RC receiver I am adding another (at least) 4.8v of current to my receiver. In total there should be 5v + 4.8v (at least 5v when fully charge) = at least 10v now in my RC receiver but somehow everything still works and nothing fail. Shouldn’t there be some damage according to technical specs?
Anyone care to enlighten me?
Thanks.