how to know if l298n motor driver is working

Other microcontrollers and single board computers.If you’ve ever been curious about what the L298N motor driver module is, this guide will help you understand it.Microcontrollers, FPGA & Single Board Computers.A la Carte(ALC) Custom PCB Design Services.How to get Technical Assistance from a Technical Support Moderator.That's when the motor looses control and power supply eventually shuts off. Starts off at 1.3A, and as the motor accelerates (it's programmed to accelerate to ~6000pps) the current drops to 200-300mA. So I just measured the current with the multimeter correctly. while typing this I realized I didn't test the current correctly with the multimeter. My multimeter isn't giving me useful readings.Īre unregulated power supplies not the best choice for driving a stepper motor? The 12v 1A supply gets overloaded and eventually shuts off, while the 24v 1.2A gets things a little too warm for my liking. I am having some trouble with the power supplies though. Peak current on the LIN motor is ~938mA, so I think this is close enough. The resistors on the Rsense pins are 2.4ohms. Vref on the L297 is ~2.2V (driven high from the MCU). I used the L297 with the L298N to create a current chopper circuit. The L298N is rated to handle the motors peak currents, and I have the external diodes to handle the voltage spikes (fried an L298N without them).Īnyone have any experience with beefier motors or LIN Engineering motors in particular?Īny ideas or clues would be great, this problem has been bugging me for a couple months now. For the 211-18-02 I used a 24V 2.7A switch mode power supply (overkill?). For the 211-18-01 I'm using a 24VDc 1.2A unregulated power supply.

I'm guessing the fault lies with the L298N or the power supplies that I am using. But I'm nearly positive they are correct.

My first troubleshooting instinct was to check the wiring and step sequence multiple times. The 211-18-01 will actually turn a few steps before it starts to vibrate.

They both show similar problems, the shaft turns back and forth (at higher speeds it just vibrates). However, my project requires some strong motors capable of high speeds. None of them pull more than 0.4A, and all operate within 7-12V. I've tested the drive circuit with three small motors: The ROB-10551 available here, and two others from different retailers. It's a simple enough circuit, with simple code that turns the stepper motor one step every half second. I'm using a PIC24HJ64GP502 to control an L298N Full Bridge Driver. Been having a problem with a homemade stepper motor drive circuit, I would appreciate any help.

How to know if l298n motor driver is working