ELEGOO 5 Sets 28BYJ-48 ULN2003 5V Stepper Motor + ULN2003 Driver Board Compatible with Arduino
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Daniel
> 3 dayGood price and probably good for precise movement but geared waaay too low for anything useful.
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Colorado
Greater than one weekThese little motors are great to use with 4 GPIO pins on a Raspberry Pi 3. They can do either full step (less torque) or half step sequences very easily. Bidirectional. Not lots of speed, but a surprisingly amount of torque for such a small motor. The small controller board that accompanies them worked flawlessly and gives an LED status of the patterns being driven across the four input lines to do either the half or the full step (which direction you walk through this sequence determines clockwise or counterclockwise). Great deal for the price in the package of five!
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Israel Mendoza
> 3 dayExcelente producto.
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Robert Tonkavich
> 3 dayThe stepper motors are perfect for experimenting with multiple motors and working through your code, to make sure it works. The driver boards that arrived are different from those shown as the LEDs are reverse mounted and smaller. But the board performs properly. For the price, the value is spot on. Elegoo delivered for a very reasonable price. Very Satisfied.
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Root
> 3 dayThey rotate a little bit slowly with the default stepper library from arduino, but accel stepper library is quite jazzy.
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Thomas A. Horsley
> 3 dayJust did a breadboard with the sample code from this page and tried all of the steppers in it. Three of the five only turn in one direction and simply shudder when trying to turn in the other direction. Two of them work in both directions as expected. After fooling around with these on my Raspberry Pi Zero W2, I found the real problem is the 800 microsecond delay in the code, it is too small - bump it up to 900 and all five of the steppers work fine.
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Michael T
> 3 dayI LikeIT
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michael
> 3 dayHad so much fun using the stepper motor. Works well however they dont last. I guess the price!
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paul5215
> 3 dayThank you for a great deal!
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DanH
> 3 dayGood for basic application and was easy to get working with Raspberry Pi Zero W that I am playing with but the rotation is like 1 RPM so not very practical for any motion unless you are going to play around with a bunch of gears. I didnt find the torque to be super strong, so going to have to consider another user for them (or see if I can gear it up). Good price to learn with.
BYJ48 STEPPER MOTOR
Stepper Motor is a type of electromagnetic device which moves in discrete steps. This has several coils, the center shaft has a series of magnets mounted on it, and the coils surrounding the shaft are alternately given current or not, creating magnetic fields which repulse or attract the magnets on the shaft, causing the motor to rotate.
This Unipolar Stepper Motor 28-BYJ48 is provided with five wires and four coils. The center connections of the coils are tied together and usually used as the power connection. They are named unipolar steppers because power always comes in on this one pole.
Specification
- A, B, C, D four-phase LED indicates the status of the stepper motor work.
- Stepper motor with a standard interface, when used directly pluggable.
- 5 line 4 phase can be used for ordinary ULN2003 chip driver, connect to the 2 phase , support the development board, with convenient use, direct docking.
- Rated Voltage: DC5V 4-phase
- Insulation Resistance: >10MΩ (500V)
- Dielectric Strength: 600V AC / 1mA / 1s
- Step angle: 5.625 x 1/64
- DC Resistance: 200Ω±7% (25C)
- Reduction ratio: 1/64
- Insulation Grade: A
- No-load Pull in Frequency: >600Hz
- No-load Pull out Frequency: >1000Hz
- Pull in Torque: >34.3mN.m(120Hz)
- Detent Torque: >34.3mN.m
- Temperature Rise: < 40K(120Hz)
Programm Code Example
The Arduino IDE support a library for stepper motor, after connect motor with microcontroller you can upload the sketch on to the microcontroller. The following is the code of an example program, it can be modified according to your needs:
#define IN1 8
#define IN2 9
#define IN3 10
#define IN4 11
int Steps = 0;
boolean Direction = true;
void setup() {
Serial.begin(9600);
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(IN3, OUTPUT);
pinMode(IN4, OUTPUT);
}
void loop() {
for(int i=0; i<4096; i++){
stepper(1);
delayMicroseconds(800);
}
Direction = !Direction;
}
void stepper(int xw) {
for (int x = 0; x < xw; x++) {
switch (Steps) {
case 0:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
case 1:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, HIGH);
break;
case 2:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 3:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 4:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 5:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 6:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 7:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
default:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
}
SetDirection();
}
}
void SetDirection() {
if (Direction == 1) {
Steps++;
}
if (Direction == 0) {
Steps--;
}
if (Steps > 7) {
Steps = 0;
}
if (Steps < 0) {
Steps = 7;
}
}
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| ELEGOO UNO R3 Board ATmega328P | ELEGOO UNO Project Super Starter Kit with Tutorial for Arduino | ELEGOO Mega 2560 Project The Most Complete Ultimate Starter Kit | ELEGOO UNO R3 Project Complete Starter Kit | ELEGOO UNO Project Smart Robot Car Kit V4 | ELEGOO Upgraded 37 in 1 Sensor Modules Kit with Tutorial | |
| Control Board | UNO R3 | UNO R3 | MEGA 2560 | UNO R3 | UNO R3 | / |
| Compatibility with Arduino | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Projects Tutorial Included | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Assembly Requirement | ✓ | No | No | No | ✓ | No |
| Reasons to Buy | The Same ATmega328 with Arduino UNO R3 Board; The Same ATmega16U2 with Arduino | Tutorial of 24 Projects, Cost-effetive Starter Kit | Tutorial of 33 Projects, Powerful Mega R3 Control Board | Tutorial of 33 Projects, Complete Stater Kit with UNO R3 | ELEGOO EleRobot APP; FPV Mode; Obstacle Avoidance; Line Tracking Mode | Tutorial of 34 Projects, Updated Version, Compatibility with Arduino IDE, Raspberry Pi and STM32 |