Hello everyone, I already assembled the robot, calibration was perfect and I run my first program. Just want to point about 3 issues that I found and see if maybe one of you guys experienced the same. 1- my program was running perfect, accuracy was incredible I was really happy about it but after 10-15 cycles the robot stops, not a single alarm, everything is fine it just stops, so when this happens I click the PLAY button and the program resumes normally. But sometimes when it resumes all the points that were saved in the program are offset for like 5 degrees. 2- J1 axis it's very smooth but when I try to job that axis to any direction +- just ONE degree it doesn't move. I have to click a lot of times so the axis moves, this only happens with degrees less than 5. 3- I have been having issues with axis j5. After I finish running my program, I move the robot to rest position and then I turn off everything. Then I power everything back on and when trying to run the program I made the J5 axis is always offset for about 15 degrees. This j5 axis always gave me a lot of issues, for example when I do auto calibration after doing it one axis at a time the j5 is always 45 degrees off from where the calibration video shows. I didn't care much about that cause the Calibration did what I expected, touching the limit switch twice like the video shows and then it showed successful! And then I did my program and everything was ok except when I turn off everything. I found that one solution was never turning off the system but maybe there is something else I am missing. Sorry for the long post but I just want to know if someone run into this as well. Thank you 🙏🏻

I'm looking to develop more fluid/complex moves for my AR3 and I also intend to develop some custom multi-axis, sensor driven, interactive mechanisms for more artistic endeavors. My CAD and mechanical design skills are rather strong, but my control skills which are limited to a few solid years of tinkering with Arduino. I have seen a few posts from users that are operating their arms with ROS/MoveIt and RoboDK which look promising, but I'd like to build up my knowledge base before pursuing either of these options. It seems like ROS might be the best option given its widespread adoption and community support, but I'd like to hear from some of the more seasoned users and get their opinions. Are there any reference websites/books/projects that might be helpful as I start this process?

Hi, I have attached a video showing that motor J3 is not reversing. It will go forward but not backwards. When I click on the J3- it clicks and stops right away (shown on the video) All the motors are working fine. The only issue I’m having is with Motor J3- Here are the steps I took to solve this – but no luck I changed the cable that was originally attached to Motor J3 to all other controls and it worked. Basically when I moved the cable from J3 motor to lets say J5 motor from the computer I pressed J5 +- and J3 motor worked. But when I took any of the other cables and attached it to Motor J3 those didn’t work. I checked all the cables and connections, and all are good Since I saw that the direction – of the Motor J3 is the one giving problems, I used the two cables (step = 12 and direction = 13) from the optional driver #7, and afterwards I modified the teensy software (so that J3 had step = 12 & direction = 13) still didn’t work. I put a new stepper driver for the J3 Motor and still didn’t work. After all these, I believe it might be a software control (ARCS J3 direction -) issue because no matter what driver or motor I use the J3 direction – is not sending signal as the video shows. Another email will follow shortly. Thank you Alejandro