ELEGOO 5 Sets 28BYJ-48 ULN2003 5V Stepper Motor + ULN2003 Driver Board Compatible with Arduino
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Joshua Young
> 24 hourAll units work, price seemed fair. Do understand, these are not strong motors, do not expect them to move much weight or exert much force. They’re not meant for that.
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Chris Mansell
> 24 hourdelayMicroseconds has to be at least 1000 to work (not the 800 that is shown in the code in the item details) Im using an Arduino nano and the lowest number I can get to work is 1000. Very easy to use and setup, only downside is that its REALLY slow, but this is just for learning .. just bought a Nema 17 and controller for my next project now Ive seen how easy it is to use..
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Jason Y.
> 24 hourThese are my go-to steppers for all my art installations. Ive always had a good experience with them.
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Pen
> 24 hourGreat deal
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RPN
> 24 hourOnly started testing but seems to be a good product
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Kimberley
> 24 hourThese motors are ok for learning how to work with stepper motors but are too slow for most practical uses that I can see. Attempting to run them too fast results in them missing steps or not moving.
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Deborah L Lienhart
> 24 hourSuper easy to connect, even easier to code. Output one high, and the other 3 low. They are geared to turn pretty slow which is perfect for my application!
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Jesse G.
> 24 hourYeah, bought these... not really looking into the details. They are VERY SLOW. Too slow for my application. I can stop the shaft with my fingers, so no real torque either.
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Salty Donkey
> 24 hourI attempted to use these to build a small robot for my daughter to play with, and it did eventually mostly work. I converted them to a 4-wire motor by cutting a trace on the inside of the blue cover, and they worked fine that way. There is a lot of back lash in the gear train which was a problem for my application, so Id recommend you use them for one-directional movement if backlash or absolute accuracy is a big concern. For driving to a limit switch or just rotating a display or something slowly, theyre a great option. I did strip one of the gear sets out by accident, but theyre cheap enough to just replace and move on.
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Mark
> 24 hourGoy these to experiment with a Raspberry Pi and they work as advertised. Follow the instructions to get them running and off you go.
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 |