DC Motor speed control

693

17:28:28

Potentiometer uses Arduino 5V power and sets a value.

This value is sent to the NPN Transistor which will activate the DC motor running on a 9V Battery. (The potentiometer value actually goes to the Arduino as an input and then a PWM signal is sent to the transistor according to the potentiometer reading)

The higher the current from Potentiometer, the more current the Transistor allows through, hence controlling speed (Click on Potentiometer and then spanner icon to adjust speed)

The LED is there for reverse current generated from the DC motor. (Not sure this is correct since the diagram never shows any current going through the LED)

published 8 years ago

ven11

8 years ago

turn the led, it will work

ven11

8 years ago

I mean Turn the direction, it is facing wrong direction currently. Cheers

antony52

8 years ago

Hi any chance you can send a list of the components used here.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.