I am completely stumped at this point. i have tried to install the reprap_new_firmware to my arduino but it doesn't respond to the sketch. a example of this is the enable pin should be high when sending a command but the pin wont change states ( i have tried this pin inverted and non inverted and still nothing.). also the direction pins dont change voltages. so basically went back to grbl after that.
now my problem with grbl is that i can only get the 1 axis to work(or just 2 output pins to work at a time) the other 2 just stall. i have ran all 3 axis off the 2 output pins i know work and i can get all 3 steppers to move at the same time, just not individually in there assigned pins like they should…
then i tried to use the code from instructables "how to wire a 3 axis cnc" and now i can get 2 of the 3 steppers to move but the 3rd one stalls… i tried to reassign the 2 pins that didnt work to two other ones but with the same result 2 out of the 3 working.. once again if i put the stalled stepper signal pins on the output pins on a working one i can get all 3 to spin.
so i know its not a power supply issue, not a stepper drivers issue, and not a stepper motor issue…..
any help would be greatly appreciate and i mean ANY help! lol
almost forgot to add im using:
arduino uno ATmega328 and or a arduino mega 2560
3 big easy drivers from spark fun, in single step mode 2A per phase
3 400 step steppers spark fun 3.3v 1.7A per phase
atx power supply, i think 300watt 14A 12V
