I bought 2 of these one for each motor. I am using a Raspberry PI 4. But even before that I am having trouble getting the output to be over 1.71 volts. I’m not even hooking up the motor yet. I’m just checking the output voltage. I have a 12 volt battery that powers a buck converter and the high power side of the driver. The buck converter outputs 5.21 volts. When i have all the pins hooked up and no multimeter on the output, I have a green led light. As soon as I put the meter across the outputs the light goes out and my meter reads 1.71 volts. I’ve tried using the PWM pin also. On the 1st driver I did have the motor hooked up and saw a led light, but no motor action. So i assumed it was a bad driver board, and started testing withe the 2nd motor driver. Either way I am not not seeing any results that I would expect. And this literally is my 1st raspberry pi experiment. All the voltages IN are good. I just don’t know what any of the lights mean, and the manuals don’t explain enough. Ok. I just did a little more testing and changed batteries in my meter. The green light is on with maximum voltage of 3.94 volts.
Hello.
Could you clarify what is providing the logic signals if you are not using the Raspberry Pi yet? Please post some pictures of your setup showing all of your connections (including the ones for your multimeter), as well as some close-up pictures of both sides of your VNH5019 driver carriers. Also, could you post more details about your battery and buck converter?
Brandon