I have a Hitec HS805mg servo that I want to drive through 180 degrees with position control. I tried attaching to a 555 chip servo driver that position controls a smaller Dynan B2232 servo. It rotates through 180 degress but in between swings about, stop,s then makes random moves and continues on. It is never stationary.
I bought a GP servo driver board from Quasar Electronics and connected up.With the suggested 10k pot i achieved rotation of about 3 degrees. I tried a different pot, this time 100k [didnt have my glasses on] and it rotated through about 15 degrees. I have gone right up to a 220k pot and now get 90 degrees rotation.
is there anyone who can in clear and simple terms. tEll me whats going wrong