Hi! My question sounds really easy, but I've been used hours on the net searching answer, but I haven't found everything.
So I want to know where can I buy 360 degree (not continous rotation) servo which can handle 30kg and cost about 20-40 dollars. I found one 180 degree servo from ebay and I I would like to find the same kind, which rotates 360 degrees.
Thanks a lot for your help!
You won't find a 360 degree servo using a potentiometer as feedback AFAIK, try
looking at digital servos? Do you mean 360 or 330? Usually there is a physical
end-stop so a full 360 wouldn't be common.
Maybe a sail-winch servo would be suitable?
...R
Like this: 1 turn sail-winch servo?
So I want to know where can I buy 360 degree (not continous rotation) servo which can handle 30kg and cost about 20-40 dollars.
Below is a servo that might be of interest. Sail winch servos can make more than one turn (often several), possibly at the expense of loosing positioning resolution.
This one looks good for me: Radio Control Planes, Drones, Cars, FPV, Quadcopters and more - Hobbyking
But in fact I'm not sure what is difference between that and the servo I linked from ebay. I can't understand why is that winch servo much cheaper, but stronger and better in every way. Is there something which I didn't notice?
Be aware about driving a sail winch servo into it's extreme ranges. I did by using the "Knob" example in the IDE .
On my servo (now dropped by Pololu (I wonder why)) when the pot on the arduino was rotated towards the extreme ends the servo would act like a continuous one by never stopping. Once the pot was brought back to the center position the arm (actually a drum) on the servo was miss located a lot. The servo did not work very well after that. From what I saw after opening it up the plastic gear got a little chewed up. Pololu on the product page had a snippet about it. The servo's pot had end stops that let it rotate only about 190-200 degrees.
The below sail winch servo appears to be a dual function servo.
http://www.robotshop.com/ca/en/hitec-hs785hb-servo-motor.html
30 kg is a fairly butch servo. I would not expect to buy one for 20-40 dollars.
This guy has three or four very informative videos about servos and their real torque ability.