I wanted to send out a note to everyone to make sure you get the J3 belt tensioned properly. It does need to be fairly tight and cannot have any slop in it. A couple people have had this issue recently - this person on youtube made a video on the robot and he doesn't have the belt tight enough. (I posted a comment on his video outlining the things he was mistaken on - hopefully his viewers take note of it)
https://www.youtube.com/watch?v=4xD9QCBkxAs&lc=UgyQPwXsxTMfLsU0J-R4AaABAg Here is a quick video showing what the deflection should look like when you pull up and down on the arm. https://youtube.com/shorts/lf_KFFiCdJA I will be updating the manual to include more information on good belt tension.
Thanks.
Chris
Hi Chris. That wasn't cool. I really like your robot, and you're the man. The negative comments on that video were not kind, or fair; there are ways to mitigate much of the play in the arm that was the chief complaint. Also, suggesting more space for ease of assembly is something that would negatively affect someone who wants a more compact package. I guess your robot being out in the world will encourage some set of people to find some sort of perceived downside and comment on it, while not understanding that the mere existence of the unit is an incredible gift. It's really easy to make a video that shows things that could be better. It's much harder…