This post may be similar to other ones, but they didn't solve my problem: I've got four Hobbywing Skywalker 40 A electronic speed controls (ESC), to control four brushless motors (these ones) to make a quadcopter. I plugged a LiPo 3S 3000 mAh 10C battery to the ESC, then the motor to the ESC, and finally the Raspberry Pi to the ESC, without the 5 V 3 A battery eliminator circuit (BEC).
Here is what it looks like picture.
I know the Raspberry Pi isn't powered, it's just to show ;) And then... I have no idea what to do.
There's a nice melody comming from the ESC when I plug it, and then "beep"s every two seconds, and the motor nods!
I know that an ESC is controlled by a PWM signal just like a servo, but I'm new to Python, and I haven't deal with servos before.