I'm looking to drive two identical servos from a separate supply to the aurduino (common gnd's). As the device is going to be battery operated I want to disable the power to the servos while idle. I will do so via a logic Mosfet maybe a IRLB8743PBF. As I want to drive both servos to the same positions can I simply tie both signal wires together and signal them both from one arduino pin? another pin to enable or disable the motor supply?
As I want to drive both servos to the same positions can I simply tie both signal wires together and signal them both from one arduino pin?
What are these servos doing? Yes, you can connect two servos to the same pin. The pin won't know/care. The servos may not move to the exact same position, given the same input, though. Manufacturing tolerances, calibration, etc. affect position/input relationships.
another pin to enable or disable the motor supply?
Yes, by enabling/disabling the transistor.
Be aware that uncommanded (unpowered) servos can/will drift. Maybe that matters; maybe it doesn't.
PaulS:
What are these servos doing? Yes, you can connect two servos to the same pin. The pin won't know/care. The servos may not move to the exact same position, given the same input, though. Manufacturing tolerances, calibration, etc. affect position/input relationships.
The Servos will operate a yale style nightlatch, when in the locked position they could sit that way for days, weeks even. There will be no implied movement to the servos. I was hoping the gearing would be enough to prevent the arm moving under it's own weight.
When you say they won't go to the same position. Do you mean that each operation may result in a different position? Once I have set the arms to the correct position are they not calibrated then, in relation to each other?