5V Stepper Motor + ULN2003 Driver Board Set | Botshop

5V Stepper Motor + ULN2003 Driver Board Set


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This set is a perfect choice for building you own 3D printer or CNC machine. The Driver board could function as a driver for other devices as well, as listed below in the ” ULN2003 Chip Features”. It’s is pretty self-explanatory that buying this set would be a very wise choice.

Stepper Motor Features

Rated voltage : 5VDC
Number of Phase 4
Speed Variation Ratio 1/64
Stride Angle 5.625° /64
Frequency 100Hz
DC resistance 50Ω±7%(25℃)
Idle In-traction Frequency > 600Hz
Idle Out-traction Frequency > 1000Hz
In-traction Torque >34.3mN.m(120Hz)
Self-positioning Torque >34.3mN.m
Friction torque 600-1200 gf.cm
Pull in torque 300 gf.cm
Insulated resistance >10MΩ(500V)
Insulated electricity power 600VAC/1mA/1s
Insulation grade A
Rise in Temperature <40K(120Hz)
Noise <35dB(120Hz,No load,10cm)
Model 28BYJ-48 – 5V

ULN2003 Chip Features

1 Features
• 500-mA-Rated Collector Current (Single Output)
• High-Voltage Outputs: 50 V
• Output Clamp Diodes
• Inputs Compatible With Various Types of Logic
• Relay-Driver Applications
2 Applications
• Relay Drivers
• Stepper and DC Brushed Motor Drivers
• Lamp Drivers
• Display Drivers (LED and Gas Discharge)
• Line Drivers
• Logic Buffers

Diagram and Sketch




//declare variables for the motor pins
int motorPin1 = 8; //pin 1N1
int motorPin2 = 9; //pin 1N2
int motorPin3 = 10; //pin 1N3
int motorPin4 = 11 //pin 1N4
int motorSpeed = 1200; //variable to set stepper speed
int count = 0; // count of steps made
int countsperrev = 512; // number of steps per full revolution
int lookup[8] = {B01000, B01100, B00100, B00110, B00010, B00011, B00001, B01001};
void setup() {
 //declare the motor pins as outputs
 pinMode(motorPin1, OUTPUT);
 pinMode(motorPin2, OUTPUT);
 pinMode(motorPin3, OUTPUT);
 pinMode(motorPin4, OUTPUT);
void loop(){
 if(count < countsperrev )
 else if (count == countsperrev * 2)
 count = 0;
//set pins to ULN2003 high in sequence from 1 to 4
//delay "motorSpeed" between each pin setting (to determine speed)
void anticlockwise()
 for(int i = 0; i < 8; i++)
void clockwise()
 for(int i = 7; i >= 0; i--)
void setOutput(int out)
 digitalWrite(motorPin1, bitRead(lookup[out], 0));
 digitalWrite(motorPin2, bitRead(lookup[out], 1));
 digitalWrite(motorPin3, bitRead(lookup[out], 2));
 digitalWrite(motorPin4, bitRead(lookup[out], 3));

Additional information

Weight0.25 kg


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