555 Timer Servo Motor Controller
1
Favorite
33
Copy
8613
Views
Circuit Description
Circuit Graph
The circuit is a basic servo motor controller/positioner based on the 555 timer operating as a variable duty cycle, constant frequency astable multivibrator (see the circuit 555 Variable Duty Cycle, Constant Frequency Astable Multivibrator). From the generalized circuit the values of the components were tailored for this specific application.
Potentiometer Rdcadj adjust the duty cycle with slight effect on frequency.
This is for servo motors with the following specifications:
Power Supply = 5 V nominal
Control Pulse Repetition Rate = 50 Hz (20 ms / cycle)
Counterclockwise/Left/0°(-90°) Control Pulse Width = 1 ms
Neutral/Midrange/90°(0°) = Control Pulse Width = 1.5 ms
Clockwise/Right/180°(+90°) Control Pulse Width = 2 ms
This is the basic circuit, additional components can be added to optimize the performance of the circuit.
Creator
GGoodwin
1116 Circuits
Date Created
7 years ago
Last Modified
6 years, 1 month ago
Tags
Circuit Copied From
Open Circuit
✕Circuit Graph
✕
mushketer888 says: