Hello, i recently came across a Xcelorin 8750kv brush-less motor and corresponding Xcerlorin ESC.
I will have my setup attached below, but pretty much i am powering an Servo tester(5v) from arduino and the servo tester has 3 pins as an output (ground,+v, signal) which i feed into the ESC. Then i powered the ESC's ground and +voltage cables from my dc power supply.
What i have noticed is that i am able to power the motor without powering the 2 cables on the ESC( ground,+)!!! As far as i know this should not be.
Does that mean i am pulling current from the 5v arduino pin?
Even when i varied the voltage from my dc power supply to the ESC it would have no effect on the motor or ESC and it shows that i am not pulling any current on my DC power supply.
Any suggestion because my motor seems a little weak.
Thanks
Look up the current need for every part You use. Then decide from where You can get that current. Arduinos are not some nuclear power stations. Using USB pwr for the Arduino there are still limits.
Railroader:
Look up the current need for every part You use. Then decide from where You can get that current. Arduinos are not some nuclear power stations. Using USB pwr for the Arduino there are still limits.
thanks for response. i will look up the different currents, but normally for this setup the power should be getting drawn from the Esc's Power and ground wires( hence the bigger cables) and not the 3 smaller cables that would normally hood to the flight controller (pwr,grd,sig) which powers the esc.
I dont know why its not drawing current from my DC power supply, adjusting the voltage levels had no effect on the motors.
Attach the wiring diagram. I get no idea of Your powerings.
Are you sure you have the ESC power switch ON?
Steve
slipstick:
Are you sure you have the ESC power switch ON?Steve
YOU ARE THE MAN STEVE.
I am new to RC products and i though that was an on/off switch but i see it switches between a mode to get power from the 5v pin, in my case from the arduino, or to get power from the an external battery or voltage source.
At first even when i flipped the switch it still didnt work but then i realized that i had a current limiting set on my Dc power supply so when i fixed that it works and draws about 1/2 an amp( which the motor spins very fast) but arent the ESC's supposed to handle 15- 45 amps depending on the ESC? Why so big of a safety gap?
Thanks for reply
tjones9163:
I am new to RC products and i though that was an on/off switch but i see it switches between a mode to get power from the 5v pin, in my case from the arduino, or to get power from the an external battery or voltage source.
At first even when i flipped the switch it still didnt work but then i realized that i had a current limiting set on my Dc power supply so when i fixed that it works and draws about 1/2 an amp( which the motor spins very fast) but arent the ESC's supposed to handle 15- 45 amps depending on the ESC? Why so big of a safety gap?
Thanks for reply
No such thing as "safety gap". No idea where you dreamed that up.
Your setup above is completely wrong for powering the motor.
Same goes for the servo tester in this arrangement.
Simply put, think of it this way.
Arduino supplies just the signal and ground return, power must come from another source.
Again with common ground.
What is the Arduino doing anyhow?
Once again, Thanks slipstick and Railroader for taking time to respond. I appreciate it.