This is the second hand control board with some faulty ESCs. I have to buy the CPU with special boot loader from Mikrokopter since this 2.0 ESC is not open bootloader. Wow it cost too much for buying 2 chip atmega 168 from Mk US and shipped back to Viet Nam.
However, I finish to fix the esc and re-assembly the system. It's planed to put on my Octokopter or X8 Octo. Some pic of rebuilt electronic.
The ESC board with 8 ESCs and upgrade some more capacitors for hight power motor ( RCTimer 3536 - 700Kv with 12x6 props on 4S or MT-3515 T-motor with 15x5props on 5S)
I'm often used 2 parallel batteries for multicopter since it is easier to arrange the batteries and CG. Also the power cable is smaller and softener. Here it is:
More coming ....