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gnea / grbl

An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on a straight Arduino
https://github.com/gnea/grbl/wiki
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Recommended motor driver setup? #912

Open digimbyte opened 4 years ago

digimbyte commented 4 years ago

new to Arduino cnc, I loaded the default setup to my ESP32 but don't know what to do to assign pins. I found one document saying what pins do what https://github.com/bdring/Grbl_Esp32/wiki/Setting-Up-the-I-O-Pins

but as far as I know my stepper motors require a drive matrix for a ULN2003A 5 pin 28BYJ-48 steppers

doppelhub commented 4 years ago

Looks like you're using bipolar stepper motors... those will need to connect to a stepper driver (e.g. DRV-8818)... your microcontroller will then send STEP+DIR pulses to move the steppers.

digimbyte commented 4 years ago

my steppers came with ULN2003APG's I assume I swap this chip/board out for a different driver as this one requires the IN1,IN2,IN3,IN4 matrix or does another board attach to this as the driver? I found some DRV8825 boards and I'll see how they go. not sure what pins would go to where however. https://www.aliexpress.com/item/1005001374747956.html

digimbyte commented 4 years ago

Ultimately, I feel I need the 6 pack universal CNC controller https://www.tindie.com/products/33366583/6-pack-universal-cnc-controller/ but I don't have essentially $120 - is it needed? can I just make a basic version myself? after conversion $70~ + shipping $50 to my country