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I was thinking again, and I figured there must be a way to get position feedback from a standard servo. I found this forum post outlining exactly what I was thinking.

forums.trossenrobotics.com/tutorials/how-to-diy-128/get-position-feedback-from-a-standard-hobby-servo-3279/

Basically, you connect a wire to the servos potemeter and another to the ground. You then would connect them to one of the ez-b's adc ports. I am looking to test this with a spare servo I have.

Thoughts?


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#1  

Where have you been? This has been discussed repeatedly over the past several weeks:)

Yes, it works. (limitation of course being the number of ADC ports available).

Alan

PRO
Synthiam
#2  

There's also an open servo project. You replace the pcb in the servo with theirs and it gives you feedback via a serial or i2c line.

#3  

@thetechguru I searched but couldn't find what I was looking for odd enough.

@DJ I wonder how that would work considering the different kinds of servos, voltages, motor currents, and so on?

Could someone provide me to links of the other posts?

PRO
Synthiam
#5  

No need for other posts. Simply connect an ADC wire to the center pin of the potentiometer. Voila. It's that easy.