Can anyone help me? I am using Arduino Uno and the Arduino motor shield to control a 4.5 - 15v dc mfa como drill 457-re540/1 motor, powered with a seperate 12v dc, 2 amp supply. In the unload state everything works fine but when connected to my test rig driving a belt and pulley system it drives for a few seconds before stalling and the shield gets very hot.
I have tried other power supplies lower voltage and current but with no success, is the motor shield not up to the job or am I missing something?
Any help would be most welcome.
L298-based motor shields are vastly overrated and can't handle the current requirements of that motor. According to the data sheet http://www.mfacomodrills.com/pdfs/Miniature%20DC%20motors.pdf it uses 2.8 amps continuously at maximum efficiency (12 V) and the stall current is over 16 amperes. You will have much better luck with modern drivers like those from Pololu Pololu - Brushed DC Motor Drivers
Edit: the power supply is probably inadequate as well.
aid40:
Can anyone help me? I am using Arduino Uno and the Arduino motor shield to control a 4.5 - 15v dc mfa como drill 457-re540/1 motor
Drill motors are designed to run at high currents from LiPo batteries. The L298 will struggle
at 1A, its not up to the job by an order of magnitude.
aid40:
Can anyone help me? I am using Arduino Uno and the Arduino motor shield to control a 4.5 - 15v dc mfa como drill 457-re540/1 motor, powered with a seperate 12v dc, 2 amp supply. In the unload state everything works fine but when connected to my test rig driving a belt and pulley system it drives for a few seconds before stalling and the shield gets very hot.
I have tried other power supplies lower voltage and current but with no success, is the motor shield not up to the job or am I missing something?
Any help would be most welcome.
how well did the motor work when driven directly by 12v??
was it cool to the touch ?