Other Arduino Codes and Videos by Robojax
This is Arduino Sketch for Tutorial video explaining how to use MOSFET module to control a DC load or using PWM to control speed of motor.
MOSFET symbol and equivalent switch representation
Connecting load and using MOSFET as Switch or PWM driver
/*
* This is Arduino Sketch for Tutorial video
* explaining why resistor is needed to be used with push button
* with Arduino to connect the pin to Ground (GND)
*
* Written by Ahmad Shamshiri on July 18, 2018 at 17:36 in Ajax, Ontario, Canada
* For Robojax.com
* Watch instruction video for this code: https://youtu.be/tCJ2Q-CT6Q8
* This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.
*/
int motorPin =9;// pin to connect to motor module
int mSpeed = 0;// variable to hold speed value
int mStep = 15;// increment/decrement step for PWM motor speed
void setup() {
// Robojax.com demo
pinMode(motorPin,OUTPUT);// set mtorPin as output
Serial.begin(9600);// initialize serial motor
Serial.println("Robojax Demo");
}
void loop() {
// Robojax.com tutorial
analogWrite(motorPin, mSpeed);// send mSpeed value to motor
Serial.print("Speed: ");
Serial.println(mSpeed);// print mSpeed value on Serial monitor (click on Tools->Serial Monitor)
mSpeed = mSpeed + mStep;
// See video you for details.
if (mSpeed <= 0 || mSpeed >= 255) {
mStep = -mStep;
}
delay(200);
}
/*
* This is Arduino Sketch for Tutorial video
* explaining the 15A MOSFET AOD4184A used as switch
* this sketch used to test the moseft with load at 5A, 10A, 15A, 25A
*
* Written by Ahmad Shamshiri on July 21, 2018 in Ajax, Ontario, Canada
* For Robojax.com
* Watch instruciton video for this code:https://youtu.be/tCJ2Q-CT6Q8
* This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.
*/
int loadPin =9;// load pin
void setup() {
// Robojax.com demo
pinMode(loadPin,OUTPUT);
Serial.begin(9600);
Serial.println("Robojax Demo");
}
void loop() {
// Robojax.com tutorial
digitalWrite(loadPin, HIGH);
while(1);// wait forever
} 
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