IRF520 MOSFET Driver Module (HCMODU0083)

This little module (HCMODU0083) is a breakout board for the IFR520 MOSFET transistor. The module isdesigned to switch heavy DC loads from a single digital pin of your microcontroller. Its main purpose is toprovide a low cost way to drive a DC motor for robotics applications, but the module can be used to control
most high current DC loads. Screw terminals are provided to interface to your load and external powersource. An LED indicator provides a visual indication of when your load is being switched.

Model number: HCMODU0083
Weight: 10g
Size: 33.5 x 25.5mm
Max load (drain) current: <5A
Output load voltage :0-24V
Input Voltage: 3.3V, 5V
Applications: LED lights, DC motors, miniature pumps, solenoid valves.

Example Application:

Code:/* Include the library */#include "HCMotor.h"/* Set the pin that will control the motor. Note that it doesn't have to be a PWM pin any digital pin will do! */#define MOTOR_PIN 7/* Set the analogue pin the potentiometer will be connected to. */#define POT_PIN A0/* Create an instance of the library */HCMotor HCMotor;
void setup(){/* Initialise the library */HCMotor.Init();/* Attach motor 0 to digital pin 7. The first parameter specifies themotor number, the second is the motor type, and the third is thedigital pin that will control the motor */HCMotor.attach(0, DCMOTOR, MOTOR_PIN);/* Set the duty cycle of the PWM signal in 100uS increments.
Here 100 x 100uS = 1mS duty cycle. */HCMotor.DutyCycle(0, 100);}void loop(){int Speed;/* Read the analogue pin to determine the position of the pot. The mapfunction takes this value which could be anywhere between 0 - 1024
and reduces it down to match the duty cycle range of 0 - 100 */Speed = map(analogRead(POT_PIN), 0, 1024, 0, 100);/* Set the on time of the duty cycle to match the position of the pot. */HCMotor.OnTime(0, Speed);}

The above example demonstrates the use of the module and an Uno to control the speed of a DC motor viaa potentiometer.

HCMotor Arduino library for driving DC and stepper motors.

This Arduino library (current only supports ATMega328p based Arduinos) will allow you to control one ormore DC or stepper motors from you Arduino. The library makes use of the Arduinos hardware interrupt
timer 2 to drive the motors in the background leaving your sketch totally free for you main program. It also
allows you to mix motor types and connect them to any available digital pins (you are not limited to justPWM pins). You can simply add motors by using the libraries 'Attach' function and remove them using the'Detach' command. You can also mix supported motor types. Current supported motor types are as follows:
DCMOTOR - A standard DC type motor driven via a transistor or driver module.
DCMOTOR_H_BRIDGE - A standard DC motor connected via a H-Bridge driver module allowing for forward
and reverse directions.
STEPPER - A stepper motor connected via a standard stepper motor driver (Step/CLK & Direction)

You will need to download (please log in to download the library) and unzip this library to the Arduinodevelopment environments library area.
On Windows:
My Documents\Arduino\libraries\On Mac:
Documents/Arduino/libraries/
or similarly for Linux.

Changing the maximum number or motors:
By default this library can drive up to 4 motors. However this can be increased by editing the following linein the libraries HCMotor.h file:Code:#define MAXMOTORS 4

If you are using less than 4 motors and your sketch is processor intensive you may also want to reduce thisvalue to match the number of motors you have attached as this will free up processing cycles for your main
loop.

Using the library
To use the library just include the HCMotor.h header file and then create an instance of the library. E.g:

Code:#include <HCMotor.h>
HCMotor HCMotor;

To initialise the library place the following line in the Setup() loop at the top of the sketch:

Code:
HCMotor.Init();

The following functions are available with this library:
Code:
HCMotor.Attach(MotorNum, MotorType, Pin);

Attaches a PWM output for a standard DC motor where:
MotorNum is a value used to reference which motor you wish to attach. Valid values are between 0 andMAXMOTORS. Default maximum is 4.
MotorType is the type of motor being attached. Currently only one valid value (DCMOTOR see alternate

version below for other motor types)
Pin is the digital pin to attach it to (this can be any digital pin, not just the hardware PWM pins)

Code:
HCMotor.Attach(MotorNum, MotorType, PinA, PinB);

Attaches a PWM output for a standard DC motor with H-bridge driver or a stepper motor where:
MotorNum is a value used to reference which motor we wish to attach. Valid values are between 0 andMAXMOTORS. Default maximum is 4.
MotorType is the type of motor being attached. Valid values are DCMOTOR_H_BRIDGE or STEPPER
PinA PinB are the digital pins to attach it to. For a stepper motor PinA is the clock pin and PinB is thedirection pin.

Code:
HCMotor.detach(MotorNum);

Removes an attached motor from the list and sets its pin(s) to inputs where: MotorNum is a value used toreference which motor we wish to detach.

Code:
HCMotor.OnTime(MotorNum, Time);

Sets the on part of the duty cycle for DC motors where:
MotorNum is a value used to reference which motor we wish to alter.
Time is the amount of the duty cycle the motor will be on for in 100uS increments.
Note that for steppe motors the function does nothing.

Code:
HCMotor.DutyCycle(MotorNum, Time);

For DC motors sets the duty cycle length, for stepper motors the clock speed, where:
MotorNum is a value used to reference which motor we wish to alter.
Time is the duty cycle time in uS. For stepper motors this sets the clock speed.

Code:
HCMotor.Direction(MotorNum, Direction);

Sets the direction of the motor for H-Bridge and stepper motors where:
MotorNum is a value used to reference which motor we wish to alter.
Direction is the direction of the motor. Valid values are FORWARD & REVERSEFor H-Bridge motors this will switch the pin the PWM is output to and the sets the opposite pin low.
For stepper motors the will set the direction pin (PinB) high or low.

Code:
HCMotor.Steps(MotorNum, Steps);

Sets the number of steps (pulses) to step a stepper motor where:
MotorNum is a value used to reference which motor we wish to alter.
Steps is the number of steps to step the motor.
Note that for DC motors this function does nothing.

DC Motor Example
Code:/* FILE:
HCMotor_DC_Motor_Example
DATE:
09/07/15
VERSION: 0.1
AUTHOR: Andrew Davies
This example uses the library to control a DC motor via a potentiometer connected
analogue pin A0. The motor should be connected to digital pin 7 on the Arduino
via a suitable transistor/driver module. Do not connect the motor directly as youmay damage your Arduino.
You may copy, alter and reuse this code in any way you like, but please leave
reference to HobbyComponents.com in your comments if you redistribute this code.
This software may not be used directly for the purpose of selling products that
directly compete with Hobby Components Ltd's own range of products.
THIS SOFTWARE IS PROVIDED "AS IS". HOBBY COMPONENTS MAKES NO WARRANTIES, WHETHER
EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ACCURACY OR LACK OF NEGLIGENCE.
HOBBY COMPONENTS SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR ANY DAMAGES,INCLUDING, BUT NOT LIMITED TO, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR ANY
REASON WHATSOEVER.
*//* Include the library */#include "HCMotor.h"/* Set the pin that will control the motor. Note that it doesn't have to be a PWM pin any digital pin will do! */#define MOTOR_PIN 7/* Set the analogue pin the potentiometer will be connected to. */#define POT_PIN A0/* Create an instance of the library */HCMotor HCMotor;
void setup(){/* Initialise the library */HCMotor.Init();/* Attach motor 0 to digital pin 7. The first parameter specifies themotor number, the second is the motor type, and the third is thedigital pin that will control the motor */HCMotor.attach(0, DCMOTOR, MOTOR_PIN);/* Set the duty cycle of the PWM signal in 100uS increments.
Here 100 x 100uS = 1mS duty cycle. */HCMotor.DutyCycle(0, 100);}void loop(){int Speed;/* Read the analogue pin to determine the position of the pot. The mapfunction takes this value which could be anywhere between 0 - 1024
and reduces it down to match the duty cycle range of 0 - 100 */Speed = map(analogRead(POT_PIN), 0, 1024, 0, 100);/* Set the on time of the duty cycle to match the position of the pot. */HCMotor.OnTime(0, Speed);}

DC Motor With H-Bridge Driver Example
Code:/* FILE:
HCMotor_DC_Motor_With H_Bridge_Example
DATE:
09/07/15
VERSION: 0.1
AUTHOR: Andrew Davies
This example uses the library to control a DC motor via a potentiometer connected
analogue pin A0. With this example the motor is connected to the Arduino via a standard
H-Bridge driver module such as HCMODU0033 or HCARDU0013 to allow the motor to be driven inboth forward and reverse directions.
Do not connect the motor directly to your Arduino's digital pins as you may damage yourArduino.
You may copy, alter and reuse this code in any way you like, but please leave
reference to HobbyComponents.com in your comments if you redistribute this code.
This software may not be used directly for the purpose of selling products thatdirectly compete with Hobby Components Ltd's own range of products.
THIS SOFTWARE IS PROVIDED "AS IS". HOBBY COMPONENTS MAKES NO WARRANTIES, WHETHER
EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ACCURACY OR LACK OF NEGLIGENCE.

HOBBY COMPONENTS SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR ANY DAMAGES,INCLUDING, BUT NOT LIMITED TO, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR ANY
REASON WHATSOEVER.
*//* Include the library */#include "HCMotor.h"/* Pins used to drive the motors */#define MOTOR_PINA 8 //For HCMODU0033 connect to A-IA, for HCARDU0013 connect to IN1#define MOTOR_PINB 9 //For HCMODU0033 connect to A-IB, for HCARDU0013 connect to IN2/* Set the analogue pin the potentiometer will be connected to. */#define POT_PIN A0/* Set a dead area at the centre of the pot where it crosses from forward to reverse */#define DEADZONE 20/* The analogue pin will return values between 0 and 1024 so divide this up between
forward and reverse */#define POT_REV_MIN 0#define POT_REV_MAX (512 - DEADZONE)#define POT_FWD_MIN (512 + DEADZONE)#define POT_FWD_MAX 1204/* Create an instance of the library */HCMotor HCMotor;
void setup(){/* Initialise the library */HCMotor.Init();/* Attach motor 0 to digital pins 8 & 9. The first parameter specifies themotor number, the second is the motor type, and the third and forth are thedigital pins that will control the motor */HCMotor.attach(0, DCMOTOR_H_BRIDGE, MOTOR_PINA, MOTOR_PINB);/* Set the duty cycle of the PWM signal in 100uS increments.
Here 100 x 100uS = 1mS duty cycle. */HCMotor.DutyCycle(0, 100);}void loop(){
int Speed, Pot;/* Read the analogue pin to determine the position of the pot. */Pot = analogRead(POT_PIN);/* Is the pot in the reverse position ? */if (Pot >= POT_REV_MIN && Pot <= POT_REV_MAX){HCMotor.Direction(0, REVERSE);
Speed = map(Pot, POT_REV_MIN, POT_REV_MAX, 100, 0);/* Is the pot in the forward position ? */}else if (Pot >= POT_FWD_MIN && Pot <= POT_FWD_MAX){HCMotor.Direction(0, FORWARD);
Speed = map(Pot, POT_FWD_MIN, POT_FWD_MAX, 0, 100);/* Is the pot in the dead zone ? */}else
{Speed = 0;}/* Set the on time of the duty cycle to match the position of the pot. */HCMotor.OnTime(0, Speed);}Stepper Motor Example
Code:/* FILE:
HCMotor_Stepper_ExampleDATE:
09/07/15
VERSION: 0.1
AUTHOR: Andrew Davies
This example uses the library to control a stepper motor via a standard stepper driver
module (with step/clock & direction inputs) using a potentiometer connected toanalogue pin A0. For suitable driver modules see items HCMODU0022 & HCMODU0068.
Do not connect the motor directly to your Arduino's digital pins as you may damage yourArduino.
Note about driving more than one motor:
By default this library can drive up to 4 motors. However this can be increased byediting the following line in the libraries HCMotor.h file:#define MAXMOTORS 4 <-- change to match the number of motors you require.
If you are using less than 4 motors and your sketch is processor intensive you may
also want to reduce this value to match the number of motors you have attached as thiswill free up processing cycles for your main loop.
You may copy, alter and reuse this code in any way you like, but please leave
reference to HobbyComponents.com in your comments if you redistribute this code.
This software may not be used directly for the purpose of selling products thatdirectly compete with Hobby Components Ltd's own range of products.
THIS SOFTWARE IS PROVIDED "AS IS". HOBBY COMPONENTS MAKES NO WARRANTIES, WHETHEREXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OFMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ACCURACY OR LACK OF NEGLIGENCE.
HOBBY COMPONENTS SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR ANY DAMAGES,INCLUDING, BUT NOT LIMITED TO, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR ANY
REASON WHATSOEVER.
*//* Include the library */#include "HCMotor.h"/* Pins used to drive the motors */#define DIR_PIN 8 //Connect to drive modules 'direction' input.
#define CLK_PIN 9 //Connect to drive modules 'step' or 'CLK' input.
/* Set the analogue pin the potentiometer will be connected to. */#define POT_PIN A0/* Set a dead area at the centre of the pot where it crosses from forward to reverse */#define DEADZONE 20/* The analogue pin will return values between 0 and 1024 so divide this up between
forward and reverse */#define POT_REV_MIN 0#define POT_REV_MAX (512 - DEADZONE)#define POT_FWD_MIN (512 + DEADZONE)#define POT_FWD_MAX 1024/* Create an instance of the library */HCMotor HCMotor;

void setup(){//Serial.begin(9600);/* Initialise the library */HCMotor.Init();/* Attach motor 0 to digital pins 8 & 9. The first parameter specifies themotor number, the second is the motor type, and the third and forth are thedigital pins that will control the motor */HCMotor.attach(0, STEPPER, CLK_PIN, DIR_PIN);/* Set the number of steps to continuous so the the motor is always turning whilst
not int he dead zone*/
HCMotor.Steps(0,CONTINUOUS);}
void loop(){
int Speed, Pot;/* Read the analogue pin to determine the position of the pot. */Pot = analogRead(POT_PIN);/* Is the pot in the reverse position ? */if (Pot >= POT_REV_MIN && Pot <= POT_REV_MAX){
HCMotor.Direction(0, REVERSE);
Speed = map(Pot, POT_REV_MIN, POT_REV_MAX, 10, 1024);/* Is the pot in the forward position ? */}else if (Pot >= POT_FWD_MIN && Pot <= POT_FWD_MAX){HCMotor.Direction(0, FORWARD);
Speed = map(Pot, POT_FWD_MIN, POT_FWD_MAX, 1024, 10);/* Is the pot in the dead zone ? */}else
{Speed = 0;}/* Set the duty cycle of the clock signal in 100uS increments */HCMotor.DutyCycle(0, Speed);}

The library files can be downloaded from github here:
https://github.com/HobbyComponents/HCMotor