Can I Wire A Speed Controller To A Joystick

Much like the name suggests, DC motor controllers control the speed and management of a DC motor. To change the direction of the motor, notwithstanding, the supply information technology receives must exist reversed. And, to vary the DC motor speed, a pulse-width modulation (PWM) signal or moving ridge must exist applied to it.

As the pulse width increases, the average voltage practical to the motor will also increase — and vice versa. This ways that the DC motor speed varies with the pulse width.

PMW has get a commonly used method to do only this. But another option that'due south gaining popularity is controlling the speed and direction of a DC motor by using a joystick. How it works: when the joystick is at the center position, the DC motor stops. When the joystick is moved up or down, the motor rotates in the same management — either frontwards or in opposite.

Additionally, the further away from the center the joystick is pushed (in either direction), the faster the motor speed will be in that same direction. So, users can control the DC motor speed in this way.

The joystick command method for DC motors is currently used in several unlike applications, including every bit:

1. Remote-controlled (RC) toys, such equally planes, helicopters, boats, cars, etc.
2. Video camera cranes
3. Industrial Jogg controllers
4. Robotic arms or for robotic vehicles
5. Surveillance camera controllers

At that place are many other applications too, where the DC motor that drives the load is controlled by a joystick. In some, only the direction of the motor is altered (such equally for RC toys) whereas in other applications, both the direction and speed are varied (such every bit for video photographic camera cranes, jog controls, etc.).

The project given below demonstrates using a joystick to control the speed and direction of a DC motor. It uses a 2-axis resistive joystick using an Arduino NANO development board to command an L298 motor driver.

Circuit diagram

The circuit is built using three major building blocks with an Arduino NANO lath, a 2-centrality resistive joystick, and an L298 motor driver:

The joystick has five interfacing pins: Vcc, GND, Ten, Y, and button. The Vcc pin is given a 5V supply from the Arduino board and the GND pin is connected with the lath's basis.
The X and Y pins are analog output that's continued with Arduino's analog pins A0 and A1. The push pin is not used here.
The PWM output from Arduino's pins D5 and D6 are connected to the motor driver input pins IN1 and IN2. They bulldoze the motor through the motor commuter.
The 12 V DC motor is continued at the output of the motor driver's OUT1 and OUT2
Both Arduino and the motor commuter are given 12V of external supply.

Excursion working and operation:

Circuit working and operation:

Initially, when the joystick is in the eye or remainder position, the motor is stopped. As the joystick is gradually moved up, the motor starts running at a irksome speed in a clockwise direction (forwards). As the joystick is moved farther up from the center, the motor speed increases. When the joystick is up every bit far every bit information technology can become, the motor attains its total speed forrard.
Every bit the joystick moves back to the eye (rest) position, the motor speed starts decreasing and will stop.
Similarly, when the joystick is moved downward, the motor starts running in an anti-clockwise direction (opposite). As the joystick is moved farther from the center, the motor speed increases until it. When the joystick is downwards equally far equally it tin go, the motor attains its total speed in opposite.
When the joystick is moved fully left or right, the motor runs in either forrard or reverse at full speed.

Next, permit's review the circuit in action:

Moving the joystick toward the center or rest position always slows down the motor. Information technology will completely stop when in the middle position.
When the joystick is moved up or downwards, its internal resistance (the potentiometer) increases or decreases. Substantially, this increases or decreases the analog output voltage for pivot X.
Arduino will read the analog voltage and convert it into a digital value, which ranges from 0 to 1023, based on whether the joystick moves fully upwardly or down.
When the joystick is in the center position, Arduino receives a value of nigh 510. When it's moved upward, the value gradually increases from 510 to 1023 max. Similarly, when the joystick is moved downwardly, the value decreases from 510 to 0 max.
Based on these values, Arduino generates PWM on pins D5 and D6. When the joystick moves upward, the PWM value gradually increases from 0 to 255 (0 – 100%) on pivot D5 (and the motor speed accelerates forrard). When the joystick moves downward, the PWM value increases on pin D6 (and the motor speed accelerates in a reverse direction).
Similarly, moving the joystick to the left or right will increase or decrease the analog output on pin Y. Arduino will read the analog voltage and convert it into a digital value.
When the joystick is moved to the correct, the value will be more than than 750. As a consequence, Arduino will give 100% of the PWM signal to pivot D5 (and the motor will run forward at full speed). When the joystick is moved to the left, the value will be less than 250. Now, Arduino will give 100% of the PWM signal to pivot D6 (and the motor will run in contrary at full speed).
The motor speed increases and decreases equally the joystick is moved. It will also change directions depending on whether the joystick is moved upwards or down.

This working of this circuit depends on the program that's downloaded into the internal memory (Wink) of Arduino'south microcontroller ATMega328. This program is written using C language, using the Arduino IDE software. It also uses the "DC_Motor" Arduino library that I developed (and information technology's bachelor on this website, Engineers Garage).

Software program:

#include <DC_Motor.h>
DC_Motor dcm(5,6,i);
int motor_speed,set_speed;
void setup()
{

}

void loop()
{
int x_value,y_value;
x_value = analogRead(A0);
if((x_value>=490) && (x_value<=530)) dcm.motor_speed_zero();
if(x_value>550)
    {
      set_speed = map(x_value,550,1020,10,100);
      dcm.run_motor(1,set_speed);
    }
if(x_value<470)
    {
      set_speed = map(x_value,470,0,10,100);
      dcm.run_motor(0,set_speed);
    }
   y_value = analogRead(A1);
   if(y_value>750)
    {
      dcm.jogg_set_speed(ane,100);
    }
if(y_value<250)
    {
      dcm.jogg_set_speed(0,100);
    }
}

Filed Under: Arduino, Electronic Projects
Tagged With: Arduino, Arduino project, circuit, controllers, dc motor, Electronic Device, Instance code, joystick