Homebuilt ROVs Forum

The first is in regards to throttling motors. To do this is it simply as easy as changing the PWM signal for example remapping the PWM signal so that 50% would be represented by 0-128, 25% power would be 0-64 etc right?

The other question is can someone please explain this dyno test image to me? What does the orange line represent. If I throttle these motors to 4A max then these will only give me 20 watts output? That does not seem right to me.

I am looking for a powerful but low current brush less motor.

Hi,

Since you are probaly using an ESC with a reverse 90 would be neutral and 50% power in forward would be 90+45=135. Reverse normaly has a lower output rate so that depends on the ESC but 90-45 is probaly not 50% reverse power. Regarding the image, I have no real clue

Fryslan

Thank you.

I think I have got mixed up somewhere(first ROV). You are talking angles right? I am talking an 8 bit PWM signal 0-256. If it was remapped -128 to +128 would that not give me 50% reverse and 50% forward which would then be multiplied by the ESC speed % setting for example a 50% forward would be 128 PWM signal and then this would then be multiplied by say for example a 50% ESC setting to give me 25% throttle? I thought the angles was auto handled by the ESC or have I got this wrong and how do I go adjusting the angles?