How to make a full-round range base for the arm?

Lynxmotion Robot Arms
1

Hi everyone, happy new year!

I need to have my arm base rotate for a full round, or near 360 degree, but I don’t need it to be more than 360 degree (namely, more than one round). I was wondering how should I achieve that? I thought about using a continuous servo, but I don’t know whether a continuous servo can achieve accurate positioning as the other 180 degree servos, as I read from the book “Robot builder’s bonanza” the anthor says “once modified to continous servos, they no longer are capable of precise angular rotation.”

I also thought about using gears, but is there any easier way not to use the gears?

Please help me!

2

If the arm is not too heavy, consider the 785HB servo which has position feedback over 1260 degrees. A continuous rotation servo has no position feedback at all. The other option is of course a servo power gearbox (which uses gears).