I'm trying to run an RC brushed motor with the lipo battery. I have managed to make the circuit work with the 3-6V motor that comes with the Elegoo pack (a little one with a fan). But when connecting the RC brushed motor I see that it tries to move and makes a little sound (piiiiiii) but does nothing. My logic tells me that it lacks power. I have tried to connect the motor directly to the battery for a second and it runs nice. So I don't know if the motor controller is limiting something or the Arduino or the battery has not much power...
Here is the image of the circuit (sorry for the drawing, I'm quite an amputee handling with Gimp and I have not yet found anything free to draw diagrams).
Could someone give me a hand? I'm pretty sure it should be something simple, the thing is my electronic knowledge is super low and I've been getting all this out of manuals and videos.
Your motor is specified to take 20A to 30A depending on which version you have. Your motor driver can supply no more than 1A. There's a very obvious problem there.
It would probably be easier/cheaper to use a standard RC ESC with that motor. Otherwise you need a much better motor driver. Pololu have a lot to choose from Pololu - Brushed DC Motor Drivers You need a high-power driver like the G2 18V25.
Completely agree with you about using RC ESC, which would be cheaper.
Do you think this one would fit with the motor I'm using? RC ESC 30A
Just another question, with RC ESC I don't need a motor driver anymore, so I can connect it to the Arduino board to control the speed and so on, isn't it?
And yes with an ESC you connect it to the Arduino and control the speed by using the Servo library (I don't know what "and so on" you want to control though).
Hi Steve, thanks again for your answer. I will take one with reverse I think.
Well, my project is creating my own RC car with Lego and Arduino, so the hardest part for me is the electronics and hardware, software is quite easy as I'm a programmer :).
I already have the turn left and right motor connected, and I stuck with the main motor (thanks to you I think I will manage it). Once I will connect it, I would like to add Bluetooth or IR Remote that comes with the Arduino pack to drive the car remotely.
Maybe you have any suggestions about some easy approach to do it?
After all this, I would like to add some front and back lights which could ON with a switch and the rear light when the car run in reverse. Then add a beep or maybe some small speakers to play some music, speedometer and so on...