I'm right now on a project to manage 7 steppers motors (17hs4023) with a Arduino Mega 2560 via a L298n H Bridge.
The 17hs4023 have to be powered by 12VCC, this is what i have done.
I'm able to make the motor rotate, but it is quite vibrating, and the L298n is becoming extremly hot while the motor has no load on it.
I use the "accelstepper" library to manage the motor.
When i give a setpoint of 200 steps/sec, when i measure the voltage between out1/2/3/4 and GND, i get 6.2V if i put voltmeter in VCC mode, or 5.9V if i put the voltmeter into AC mode.
Can you please help me to understand those problems?
Thank you
Yep you have some problems, and I cannot help you! Why because I do not have enough information. Please post a schematic, showing all power, ground and interconnections, not a frizzy thing. Send links to each piece of hardware and its voltage and current requirements. Do some research and find a MOSFET bridge to drive your motors. That will help it keep its cool!
Well, the important information is there, and a mosfet H-bridge is not going to work with a 4ohm/1A stepper on a 12volt supply. The 1Amp 17hs4023 motor would burn out soon with 12/4= 3Amp coil current.
Same with the lossy L298, that will now most likely push about 2Amp through the motor.
As said, get a special (switching) stepper driver, that you can set to a limit of 1Amp (or less).
Leo..
The specs of that motor are misleading - its not a 12V motor in any sense. Its a 0.7A, 4 ohm, 3.2mH
motor. This kind of stepper just doesn't have a voltage rating. The current and inductance are the
most important specifications, the resistance is sometimes useful to know but usually irrelevant.
You must use a stepper driver with such a motor, not a DC motor driver, since it is current
driven.