![]() ![]() Any help for a couple of very inexperienced beginners would be appreciated. I've found a few solutions in various forums but they either didn't work or were too complicated for us to implement. Neither of us a experienced with code writing so we need something that will require minimal modification to make it work. I've scoured everywhere and can't find a GRBL download that's dedicated to the MEGA2560. After more research, it appears that standard GRBL may not be compatible with GRBL. I researched and found the different pin outs for the MEGA and made the adjustments. PLease what are the pinout for rotary axis (A,B) on arduino mega, i have been looking buti cant find then with out using the ramp 1.4 shield. We can't control the steppers in any fashion. Each of the 54 digital pins on the Arduino 2560 Mega can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. So I decided to go ahead and order the MEGA 2560 in order to advance the plan thinking the more memory would help. There were two things that concerned me, one we had a error on compilation but it still downloaded, and two weeks got a warning get that GRBL use most of the available memory on the UNO. We even downloaded a file to simulate a run. We hooked everything up to the UNO, downloaded IDE, GRBL, G-Code sender, all the current editions. I managed to get my laser working under GRBL Mega 5X which was written for an Arduino Mega 2560 and RAMPS 1.4. It accepts standards-compliant g-code and has been tested with the output of several CAM tools with no problems. Latest 'verified' Version of GRBL9f2560 from GitHub. JeffH (Jeff Hankinson) March 31, 2020, 1:02am 1. I purchased 3 NEMA 24 stepper motors, and three TB6600 Chinese stepper motor controllers and a power supply. It is able to maintain up to 30kHz of stable, jitter free control pulses. I helped him research and we put a plan together to get the Arduino controlling the steppers motors before we went further. He approached me about building a 3D printer and I told him if he could do that then he should be able to build me a cnc controlled Plasma cutting table for my business. ![]() Below the layout of the pins on the Arduino board. He purchased a genuine Arduino UNO from Amazon. Grbl is an opensource software that turns your Arduino development board into a full blown G-Code interpreter. My son and I are very, very new to Arduino and new to microcontroller in general. step pulse x-axis 22 direction x-axis 23 step pulse y-axis 24 direction y-axis 25 step pulse x-axis 26 direction z-axis 27 That has solved the problem I was having. ![]()
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