PWM Servo Feedback (ADC)

This control will allow hobby pwm servos to have positional feedback in ARC.

+ How To Add This Control To Your Project (Click to Expand)
  1. Make sure you have the latest version of ARC installed.
  2. Select the Get button in this page to download the archive file.
  3. Double click the downloaded archive file to execute installer.
  4. The installer will add this control to ARC.
  5. Load ARC and press the Project -> Add Control button from the menu.
  6. Choose the Servo category tab.
  7. Press the PWM Servo Feedback (ADC) icon to add the control to your project.


This control will allow hobby pwm servos to have positional feedback in ARC with a slight modification requiring a wire, soldering iron and Philips screw driver. This uses the ADC port on the EZ-B (v4, Arduino, etc.)

Thanks. This opens up all sorts of better building and money savings.
@DJ, Hello.

I have a servocity Linear servo with 3 wire that does connect to the EZB servo port.  I watched your live hack about using the PWM servo Feedback(ADC).  I want to hack my Linear servo to use PWM servo Feedback(ADC),
Link to the linear servo;

Background on my linear servo:  When I turn on the power to my linear servo it automatically pulls the linear shaft all the way down.  I would like it to stay at the last position or the Stand position and not pull the shaft all the way down.  will hacking my linear servo allow it to stay at the last position used after turning the power off then back on again? 

Is there a way to add a script when the EZB is turned on then turn my linear servo power on to hold the last position?  I know I can add a script in the connection configure, just not sure how to write the script and if using the PWM servo Feedback(ADC) will work.

So long store, does the hack keep the last position used?

Thank you in advance for your time.

I think I have a way so my linear actuator does not pull down position.  However, I am needing Board #4. Is possible to add (select Board number as you can in Auto Position)?  This is a new feature request please.

Thank you,
Updated to allow selecting the ezb board index. 

User-inserted image
Wow DJ, You're awesome!

That was fast. I didn’t expect you to do it today.  Isn’t it a holiday for you guy’s up North today?

Thank you very much DJ,much appreciated.


Sorry the newer version did not work.  I even did the version update no luck. Uninstalled ARC and reinstalled ARC still no luck.  See picture below...  Thank you DJ.

User-inserted image
Updated for that message.
Thank you DJ, it's now working. You're fantastic!