Help With Jd

Question

Help with JD, JD is calibrated, fine tuned, latest ARC, and example. When he is connected, the int. starts calibrate frame, which looks ok. (all 90 degrees) see pic. The shoulders servos appear to be correct (pointing up as shown in lesson). I have read posts offset jd. When I manually lift my jd arms they only rise slightly above chest? (I think this is wrong) Do I need to offset servos that much when they are straight (as lessons shows) up during calibrate? When I hit stop (stand) His arms point back? He will walk, but back balanced. See pic. Checked wiring several times?
Has any one else received a JD recently? Maybe I am still doing something wrong? Thanks, Steve s calibrate pic

stand pic

Rich · Accepted Answer

You need to calibrate the servos Steve. JDs arms should be able to point straight down, out forwards and straight up. If they don't then the servos within the body need to be set at 90, the arms then need reattaching so that they are like in your first photo. The arms should point down when stopped, if they don't then they are either attached wrong or the servos need calibrating. Be sure you are calibrating the servos correctly, not just fine tuning them. Follow the lessons in the learn section, they explain it all

Dunning-Kruger · Answer

@Steve, I am going echo what Rich said and go one further... First follow the tutorials like the bible... Since I know servos quite well, it looks to me like some servos are in their brackets wrong.... What I would do is set all servos to 90 then any that were not cooperating (JD standing/lying at attention) I would remove from their brackets (white plastics) and with the servo still at 90 re-install them into the brackets until JD is standing (lying) at attention....

Steve S · Answer

Rich, That is what I thought, but I could not understand why thy pointed up during 90 degree set. I I will remove the shoulder rotation servo arms, set servos to 90, and reconnect so they still point up. Thank you Rich Steve S

Rich · Answer

Here are a bunch of photos from the "Stop" position of a properly calibrated and made JD.

Dunning-Kruger · Answer

@Steve, some of your servos are in their brackets incorrectly (see my above post)...

Rich · Answer

Here is JD in the calibration position  Your JDs arms are not fitted correctly.

DJ Sures · Answer

Steve, you were unable to follow the tutorials - this is because the tutorials show the way the arms need to be installed. This is how the arms are shown in the tutorial pages...  In order to calibrate the servos by creating a Fine Tune profile, the servos need to be installed in the shoulders like the picture above. Do not worry, it's a really easy fix Simply put the JD in calibrate mode and disconnect the arms at the shoulder. Then, slide them back in the correct position. Voila!

Dunning-Kruger · Answer

Ha, ha... Forgot you can simply un-clip and re-attach ez bits at a different angles.... You still might need to adjust some of your servos by removing them and following Servo calibration tutorial , but DJ has a simpler answer for this one....

Dunning-Kruger · Answer

... By the way @Rich's JD looks like he has been lifting weights....

Rich · Answer

It's all that dancing he's been doing! Good for the upper body

Dunning-Kruger · Answer

@Rich No way man, with arms like that... Your JD has been doing push ups....

Steve S · Answer

Thanks for all the quick help, I love EZ Robot and all the great community!  My wife will be happy because my little man can stand up, from sitting! Did I say I love EZ Robot. Now I have to help my grandson with his claws. Thanks, Steve S

Rich · Answer

You're welcome. Wait, your grandson has claws? You should see a doctor about that

Steve S · Answer

Thank you

Dunning-Kruger · Answer

@Steve... Help you grandson with his claws? Are you sure that's not the cat you're talking about? You don't want to get those two mixed up... Trust me

Steve S · Answer

Here is what we are giving one of grandsons for Christmas.

Dunning-Kruger · Answer

Nice!... What's the other one getting?

Nomad 6R · Answer

steve s the walk is awesome

Steve S · Answer

Richard, The 5 other grandsons are younger, but they like robotics. Nomad, Thanks, I like looking @ all your robots.

Dunning-Kruger · Answer

5? Wow!... hopefully they all won't be into robotics or else you're gonna' go broke buying them ez robot stuff....

Nomad 6R · Answer

steve s you can contact me on skype as patrick.dierckx19 or dierckxpatrick@gmail.com or patrick.dierckx7@telenet.be its christmas time and you never know what happens in your mailbox. happy holydays

Steve S

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