Hi guys. I have not produced a circuit for a few years now (used to be producing a few a week!).
I need a servo to turn 130 degress then pause (standard PWM). But don't want it using RC or any controllers etc, just want it so that when power is applied....the servo moves.
A 555 circuit wth potetiometer (so I can tune the angle!) should be ok for this but I have a couple of problems.
1. I will be using 12v from a motorbike power supply.
2. I need the servo to return to the 'zero' or start position when power is removed. Capacitor to retain anough charge to allow this? Just a plain signal, no PWM so servo should reset?
3. What is the most efficient circuit to use?
Everything will be bonded into one box with only 2 power wires (12v DC), potentiometer and servo arm extending.
What would be the ideal voltage for this circuit? I think the servo should run at 6v.
Any help appreciated guys
I need a servo to turn 130 degress then pause (standard PWM). But don't want it using RC or any controllers etc, just want it so that when power is applied....the servo moves.
A 555 circuit wth potetiometer (so I can tune the angle!) should be ok for this but I have a couple of problems.
1. I will be using 12v from a motorbike power supply.
2. I need the servo to return to the 'zero' or start position when power is removed. Capacitor to retain anough charge to allow this? Just a plain signal, no PWM so servo should reset?
3. What is the most efficient circuit to use?
Everything will be bonded into one box with only 2 power wires (12v DC), potentiometer and servo arm extending.
What would be the ideal voltage for this circuit? I think the servo should run at 6v.
Any help appreciated guys