Sunshine's left shoulder works, sort of. But, the Right Shoulder is just not strong enough to go very far at all. I thought it was the battery needing to be charged, so I charged them up to full capacity. Same thing. I have three 12dc batteries in PAR. The left won't lift them unless you enter a large or small number and it will go straight there, but then fall back down. It shows no magnetic flux. They both don't really work good.

The elbos are working fine, it seems.

I can't understand it, except I was going to buy 220kg of force, but this servo at only 9kg was supposed to work fine. It worked for you, but it hasn't worked for me. I must be doing something wrong. The lazy susans make the joint very, very easy to move. So, is it gravity?

I don't know. Weird.

I think I know what is going on. I hear the servo making its regular noise. But, the arm goes up a little and then falls down. I think the horn has broken loose from the servo. It is not the servo that is bad, it is where it connects to the horn. The left side has flux and shows resistance when you try to move it. The right arm moves with no flux or resistance. Yep! I don't know how hard it will be, but THAT is what's going on. This is my absolutely last robot to build. Once I get it working (hopefully some day), I will just concentrate on programing it only.

Maybe some of your servos or stripped inside the casing? That all I can think of but, be advised, I'm no expert by any means. I'm barley a novice.

Have you tried taking the servos in question out of the robot and testing them with nothing attached to them? What happened when you try to move them manually with no power by spinning the spindle? Could the teeth in the horn be stripped and not grabbing the teeth on the spindle?

Thanks, guys.
I also believe it is the teeth inside the horn that is stripped. It probably happened in the fall. I have to do some honeydos today and Sunday, so I won't have an update. The way I have it secured is very hard to get off. But, when I put it back, I will put it back right. This was my first attempt. The second and third attempts came out better because I understood what was to be done. I have always said if you need something done and give it to me, after I do a hundred of them the 101st one is going to come out perfect.

:)

OK, I pulled the arm off and I am getting ready to test it.

I tested it and when I rotate the gear/lazysusan part I hear the gears in the servo working. IF I go past the point where it is not supposed to go, it turns freely. same in the other direction. So, I also checked the servo screw and it was tight. My guess is a bad servo and or horn.

Ok, I tested it , and it was the horn. All I have is plastic horns. And when I hot melt glue them they melt, I guess. But, I plan to put another on with goop or something like that. Then, it won't melt.

I have a cheap walmart glue gun with a high and low temp. After several disasters, I primarily use the low setting now. I can't remember the price but I'm sure it was under $20.

You can also get metal horns pretty cheap on Ebay too.

Hey Mel, on my MIni-B9 I used an epoxy to mount my servo horn. It has held up fantastic!