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This is for controlling speed of the motor using Variable Resitor (Potentiometer) and we use a push button to start or stop the motor using Arduino boards. We use the module with FR120N , LR7843 and D4184 MOSFET to turn ON/OFF DC load up to up to 10A. HW-532 optically isolated from 5V to 30V load up to 10A depending on the module. Schematic shown, wiring diagram explained, different method of wiring with push button and potentiometer also shown.
<>Using this moduel we can't control direction of rotation of the motor.In Project 3 in lesson 108 We Control speed of the motor using Arduino code.
/*
* Lesson 108-3: Controlling Speed of motor using Variable Resistor (potentiometer) and using Start/Stop push button with Arduino.
*
* In this lesson we learn how to use the module with FR120N , LR7843 and D4184 MOSFET to turn ON/OFF DC load up to up to 10A. HW-532 optically isolated from 5V to 30V load up to 10A depending on the module. Schematic shown, wiring diagram explained, different
method of wiring with push button and potentiometer also shown.
Video https://youtu.be/eqXaqRFAWrA
Written by Ahmad Shamshiri for RoboJax.com
// Published on Aug 25, 2022 in Aajx, ON, Canada.
Project 1: Turning ON/OFF a motor or load
Project 2: Controllign Speed using Arduino code
Project 3: Controllign Speed using potentiometer and a push button (this project)
* Watch Video instrution for this code:https://youtu.be/eqXaqRFAWrA
*
* This code is part of Arduino Step by Step Course which starts here: https://youtu.be/-6qSrDUA5a8
*
* for library of this code visit http://robojax.com/
*
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* * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
* This code has been download from Robojax.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
const int POT_PIN =A0;//can change
const int MOTOR_OUT_PIN = 3;//~
const int START_STOP_PIN=2;//for push button switch
const int SPEED_MAX = 100;// in %
const int SPEED_MIN = 0;//in %
//video instruction https://youtu.be/eqXaqRFAWrA
const int STOP=0;
const int RUN=1;
int motorState=RUN;//
int motorSpeed = 0;//between 0 to 100%.
void pushButton();
void setup() {
//Robojax XY-GMOS MOSFET Motor driver code
Serial.begin(9600);
Serial.println("Robojax XY-GMOS Motor, Arduino");
pinMode(START_STOP_PIN, INPUT_PULLUP);
pinMode(MOTOR_OUT_PIN, OUTPUT);
//video instruction https://youtu.be/eqXaqRFAWrA
}
// the loop routine runs over and over again forever:
void loop() {
pushButton();
int potValue =analogRead(POT_PIN);
int speedPercent = map(potValue, 0, 1023, 0, 100);
if(motorState ==RUN)
{
motorControl(speedPercent);
}else{
stopMotor();
}
delay(500);
//Robojax XY-GMOS MOSFET Motor driver code
//video instruction https://youtu.be/eqXaqRFAWrA
}//loop end
/*
* motorControl(int s)
* @brief controls the motor with the value s
* @param return nothing
* @param "type" is character
* on May 08, 2020 at 02:36 in Ajax, Ontario, Canada
*/
void motorControl(int s)
{
//Robojax LR7843 MOSFET Motor driver code
//video instruction https://youtu.be/eqXaqRFAWrA
int k = map(s, SPEED_MIN, SPEED_MAX, 0, 255);
Serial.print("Speed: "); Serial.print(s);Serial.println("%");
analogWrite(MOTOR_OUT_PIN, k);
}//motorControl
/*
* stopMotor()
* @brief stops the motor
* @param return nothing
* @param
* on May 08, 2020 at 02:36 in Ajax, Ontario, Canada
*/
void stopMotor(){
//Robojax XY-GMOS MOSFET Motor driver code
//video instruction https://youtu.be/eqXaqRFAWrA
analogWrite( MOTOR_OUT_PIN, 0);
Serial.println("STOPPED");
}//stopMotor()
/*
* pushButton()
* @brief reads the push button
* @param return nothing
* @param
* on May 08, 2020 at 02:36 in Ajax, Ontario, Canada
*/
void pushButton()
{
//Robojax XY-GMOS MOSFET Motor driver code
//video instruction https://youtu.be/eqXaqRFAWrA
if(digitalRead(START_STOP_PIN) ==LOW)
{
motorState =!motorState;
delay(100);
}
}//pushButton()
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