Controlling PCM servo with switch
Electronics question, regarding rc-servos:
I am aware of how PCM coding works, but if I have an application where I only need the two extreme positions of the servo. Can I just send 0V for one position and 12V for one position? Some manufacturers say no, that I need a frequency too, but I remember having tried this in practise, and found it to work.
If not, can anyone please show me of how to make a simple resistor-capacitor circuit to create the frequency needed to make the rc-servo work?
I also want to know if I can connect two 6V servos in line with eachother, to a 12V power source. The servos are going to be operated simultaneously.
I would also appreciate recommendations of servo manufacturers. I need a servo which is weather resistant but otherwise reasonably priced. It's for a commercial invention that I'm trying to develop.
If it matters, I'm located in Sweden.
Best regards,
Erik