Reply with QuoteAre you sure you have steady HI level on those pins (not high frequency PWM)? Did you check it with a scope or just a voltmeter?
BLDC driver using STM32F103
Hello to everyone here.
I recently stumbled upon very good project here:
https://www.cnczone.com/forums/open-...28-cnc-24.html
It seems that this thread was closed long ago .
I am a hobbyist in electronics. Have made some small projects using Arduino. I made a working small CNC router using Arduino UNO and stepper motors.
Now Im trying to make bigger CNC which will need higher feed rates. So I was searching for BLDC servo solution, and found it hare.
This looks like realy good project to implement cheap BLDC motors for motion control.
Anyway, I started to make this project.
MCU is conecting to Servo Tuner app
the app is showing encoder position
But, I decided to test signal to driver stage and I get weird results. pins PB15, PB14, PB13, PA10, PA9, are HI, and PA8 is LO. This will result in magic smoke if I connect MOSFETs.
I plan to use FDD8896 MOSFETs and drive them dirrectly from MCU. Allready tested to switch them dirrectly and works just fine.
So can someone please help me hare?
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Re: BLDC driver using STM32F103
Are you sure you have steady HI level on those pins (not high frequency PWM)? Did you check it with a scope or just a voltmeter?
Actually I checked with scope too. It gives 5 Hz with 0.8 v drop. So steady hi.Originally Posted by CitizenOfDreams
