A very simple 555 timer circuit DC motor speed control electronic project can be designed using this circuit diagram. This 555 timer circuit DC motor speed control project is very simple and require few external electronic parts . Using this circuit you can control speed of a 6 volts DC motor, by simply rotate left or right the 50 k potentiometer.
The speed of a motor can be adjusted by this circuit, from 5% to 95%. The entire circuit must be powered from a simple 6 volts DC power supply .