I'm relatively new to arduino and control systems and need some help with a system setup or maybe someone can answer whether it's even possible to do with an arduino. I want to use a flex sensor variable resistance input to the arduino then have the arduino output a signal to control a Firgello actuator. I know how to wire up the flex sensor with a voltage divider to the arduino but how would I control the extend/retract of the actuator? H bridge?
The end goal of this system is to have the flex sensor straight and the actuator retracted. Then as you bend the sensor it extends the actuator given a relationship between bend resistance and actuator position. Possible?
since you're using a flex sensor, why don't you just use a less expensive actuator and an h-bridge. aren't the firgelli actuators claim to fame the fact that they have positional feedback?
if you already have a firgelli actuator with positional feedback. then it seems you'd only need this board to interface with:
if you get the model with the 'p' designation then it seems to have an analog position signal (http://www.firgelli.com/Uploads/L12_datasheet.pdf) that you could use instead of the flex sensor. Have the h-bridge control the direction/speed of the actuator. have the arduino monitor the analog output from the actuator and stop it at the desired position. (maybe use the pid library)