![]() 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. Upon using the toggle buttons, the status shows that the coordinates are jogging, but my stepper motor does not move. ![]() I successfully uploaded the GRBL Mega software onto the arduino and connected that with the UGS. We can't control the steppers in any fashion. I have tried powering just one NEMA motor using a simple arduino code successfully. ![]() Ive connected the wires this way according to the diagram. Pin diagram for Grbl v0.8 and v0.9 with the traditional layout: (NOTE: The probe A5 pin is only available in Grbl v0.9.) For Grbl v0.9 with variable spindle PWM ENABLED: (NOTE: The Z-limit and the spindle enable pin are swapped, because we had to access the hardware PWM on D11 for variable spindle PWM output to work. So I decided to go ahead and order the MEGA 2560 in order to advance the plan thinking the more memory would help. Im working with this pin layout diagram for GRBL from. 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 purchased 3 NEMA 24 stepper motors, and three TB6600 Chinese stepper motor controllers and a power supply. I wanted to make this video to help anyone that wants to build a 3 or 4 axis CNC using Arduino / GRBL / UGS (Universal G-Code Sender). I helped him research and we put a plan together to get the Arduino controlling the steppers motors before we went further. How to DIY Arduino Mega2560 CNC 3/4 axis hardware and software setup, easy. 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. Remove any items connected to pins 0 and 1. He purchased a genuine Arduino UNO from Amazon. There may be a problem with the board check or remove your wiring first. My son and I are very, very new to Arduino and new to microcontroller in general. ![]()
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