Hi,
We are a group of students doing a project with three Bipolar 76mm Stepper motors. To controle the motors we use three H-bridge (L298N DUAL FULL-BRIDGE DRIVER). These are connected to an arduino board. We have connected the components according to the attached schematic. We are connecting a power supply to power the H-bridge. This power supply is set to 5 volts. We can change this voltage, since the power supply can be set to different voltages.
We are using an adjustable DC power supply to power up the stepper motors. I have attached the datasheet for the stepper motors. We have set the adjustable DC power supply to power the motors with 3,96 volts. It should just take the amperes it needs to power the motors.
We are able to run the motors via the attached code.
We have a problem, though. The H-bridge is getting very hot. We have tried to adjust the voltage in the power supplies that are powering the H-bridge, but it still gets very hot.
Does anyone know what might be causing this? We are making an art installation which have to be able to run for three weeks (with breaks, though..) so we are worried that they heat up already after a few minutes.
Kind regards, group 2, Art and Technology.
3307Datasheet.pdf (198 KB)
motor123.pde (2.88 KB)