That's a great idea to add positional feedback to a standard servo by simply reading the potentiometer inside it. :-) Have you check if the 3.3V fed to the top end of the potentiometer stays at 3v3 when you increase the voltage to the servo, I would think that it does but it could be off a simple resistor divider from the VCC fed to the servo depending on how penny-pinching the designers were. :-P
hmmm. my ADC reading is jumping like 50 points, even when servo is not loaded, no force on servo-arm... like, i have servo in stationary position, and im continuously reading values, and the are between 200 and 250 ADC reading :/ tried multiple servos, same output.
Love the snap screw edit. Excited to see the "what we can do with feedback" video
Thanks! And more will be coming!
The robot leg!!! Yes!!!
That's a great idea to add positional feedback to a standard servo by simply reading the potentiometer inside it. :-)
Have you check if the 3.3V fed to the top end of the potentiometer stays at 3v3 when you increase the voltage to the servo, I would think that it does but it could be off a simple resistor divider from the VCC fed to the servo depending on how penny-pinching the designers were. :-P
You should think about adding a buffer to each feedback wire, so you don't change the impendace of the feedback loop
how would you do this?
@@gedr7664 using an op amp
How linear was the output from the sensor before you transformed it into a angle reading?
hmmm. my ADC reading is jumping like 50 points, even when servo is not loaded, no force on servo-arm... like, i have servo in stationary position, and im continuously reading values, and the are between 200 and 250 ADC reading :/ tried multiple servos, same output.
useless the position is allway same the position you put , if not your servo burn