Its the first little thing i write so please be patient.

the servocontroller can be build with this pattern i modified


IC = CD 4001 oder MC 14001

P1 =Poti Shoul be replaced with 2 X 50 K potentiometer
Switch= Placed betwenn the potentiometers, bridges one of them (i think i will make a seperate drawing for this)
R1 = 1M Ohm
R2 = 82 kOhm
R3 = 18 kOhm

C1 = Elko 10 μF
C2 = Kondensator 0,1 μF = 100 nF
C3 = Kondensator 0,033 μF= 33 nF

Before the batteries you should use a little diode so there is no flickering in the servo.

there are 2 Pins for the Power +-
And there pins for the standard servo + - and signal
(the servo socket should be based on this pattern)

From the IC just use the p output (the n is for older servos just in case)
(Warning the pattern is from above so be caution with the IC Pins to connect them right)

VOltage 4.8 - 6 Run on batteries

With the 2 potentiometer you can set the position of the servo.
1. calibrate the servo position
2. use the switch
3.set the end position.

thats it. the switch now operates the servo betwenn this 2 positions.

The work is easy just be caution with the ic , a seperate socket for this is helpfull so the heat won`t destroy the Ic.

SO if ther questions Ask or explain the Problems with this. The parts for the board coast me 3€ so its quit cheap. the servo is the expensivst part.

(PS. Im looking for a visor and a MQ1 board if anybody can help)