Circuit Diagram. Circuit diagram for this Arduino based 230v fan speed control circuit is given below:. Note: I have shown the complete circuit on a breadboard only for the purpose of ...

To grab these points, we have to use a zero crossing detector. The figure-2 demonstrates the schematic diagram of the whole circuit. Figure-1, Mains sine wave (Green arrows show the zero crossing ...

The L293D quadruple half-H drivers chip allows us to drive 2 motors in both directions, with two PWM outputs from the Arduino we can easily control the speed as well as the direction of rotation of ...