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Continuous Rotation Servo backwards compatible with Standard Servo
Moderators: adafruit_support_bill, adafruit

Continuous Rotation Servo backwards compatible with Standard Servo

by rahatmaini on Thu Jan 24, 2013 7:45 pm

There is a ton of code out there that works only with standard servos because they rotate 180 degrees. Because that is a range of 0-180, sketches on the Arduino can use functions like map(); perfectly.

I want to be able to use a joystick to control two continuous rotation servos in a pan-tilt system. I can already do this although it is not precise and perfect at all. I want to use Standard Servo code with Continuous rotation servos.

I need to have my Continuous Rotation Servos behave like Standard Servos temporarily. How?

:?:

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Re: Continuous Rotation Servo backwards compatible with Standard Servo

by adafruit_support_bill on Thu Jan 24, 2013 7:50 pm

I need to have my Continuous Rotation Servos behave like Standard Servos temporarily. How?


This is not possible. A continuous rotation servo is a standard servo with the physical stops removed and the feedback circuit disconnected from the shaft. Without feedback a servo cannot determine its position.

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Re: Continuous Rotation Servo backwards compatible with Standard Servo

by Arctic_Eddie on Thu Jan 24, 2013 8:11 pm

You can try Dynamixel servos. They are continuous rotation, high precision, absolute positioning, and digital control using either RS485 or half-duplex RS232. The AX-12 series will work but the RX, MX, and EX series are much better, but quite expensive. The later are 4096 steps per revolution.
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Re: Continuous Rotation Servo backwards compatible with Standard Servo

by rahatmaini on Thu Jan 24, 2013 8:42 pm

Thanks ArcticEddie!

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