Components

1 Smowboard Think Mini
1 L293D IC
1 DC Motor
1 Fan propeller
4 male-to-male jumper wires
4 male-to-female jumper wires

In this circuit, we use the L293D IC to control the DC Motor. We connect the pin number 1 of the IC which is the ENABLE pin to the Vin pin of Smowboard. We also connect the pin number 8 of the IC which is Vcc2 pin and the pin number 16 of the IC which is Vcc1 pin to the Vin pin of Smowboard. The IC is grounded by connecting its pin number 4 which is the ground pin to the ground of Smowboard. The pin number 2 of the IC which is the INPUT1 pin is connected to the pin number 4 of Smowboard. The INPUT2 pin of the IC which is pin number 7 is connected to the pin number 2 of Smowboard. These two input pins are controlled by the Smowboard. We connect the pin number 3 of IC which is the OUTPUT1 pin and pin number 6 of the IC which is the OUTPUT2 pin to the DC Motor. We connect a fan propeller to the shaft of DC Motor which works as a fan.

The Smowboard controls the input pins of the IC. It can decide the direction of the rotation of motor as well as whether the motor will be ON or OFF. The motor driver IC recieves the signals from the Smowboard and transmits them to the motor. Thus, the motor will be turned ON and OFF and rotate in a clockwise or anti-clockwise manner depending on the signal recieved from the Smowboard.

DC Motor auto flow