The story starts when I badly wanted continuous servo which is not quite common so I checked local markets. It's not available there. I also checked online websites which will deliver in 2 days and only got high torque servo which is expensive and will take a minimum of 2 days to deliver so I planned to make the existing servo continuous!
Making servo continuousI took the normal servo and removed all screws then desoldered so that I can see what's inside, and then pulled out entire components inside it. This is how it looked:
Then on the other side where rotor spindle is, I found another set of screws, opened the case where gear are placed, from the image below there is clearly visible mechanical stopper in the gear train.
Using a Dremel tool, I sliced it off. Once done I checked the rotation, even now it's only 180 degree max. When I searched, I found that inside small metal casket located where the feedback potentiometer is connected to, which prevents the rotation now. By that time, I noticed my friend sibu working on EDM (Electrical Discharge Machining) prototype for his final project.
I decided to use it to cut a narrow piece. First, with Dremel I have made it very thin. This is the video showing the process:
Hurray! It's rotating in 360 degrees, I have done with all mechanical stoppers as I didn't know what electronic or software limitations are there, so I connected my servo board that I made earlier and tested it. All fine there.
So I attached the auger to the servo and tested the same. The video below shows the working of the servo with the auger connected.
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