魏某某 发表于 2016-9-8 15:08
I didn't add R8 and R9 on the bluetooth module,but I could already control four motors.
Is there any ...
It's safer for the Bluetooth protocol to not loose any data when adding R8&R9 resistor. I would not suggest to fly without the Pullup resistors. It may work, but not reliable and it's dangerous