RDIoT Demo

4-Phase 5-Wire Stepper Motor (28BYJ-48) [D021]

https://www.youtube.com/watch?v=YzQ7ImtW9bA

* GitHub : https://github.com/rdiot/rdiot-d021.git

* Specs

Color: Silver

Diameter: 28mm

Voltage: 5V

No-load pull into the frequency: >600Hz

Phase: 4

No-load pull-out frequency: >1000Hz

Reduction ratio: 1/64

Pull-in torque: >34.3mN.m (120Hz)

Step Angle: 5.625 x 1/64

Self-positioning torque: >34.3mN.m

DCR: 200ohm +/- 7% (25'C)

Temperature: <40K (120Hz)

Insulation resistance: >10Mohm (500V)

Noise: <40dB (120Hz, No load, 10cm)

Dielectric Strength: AC 600V / 1mA / 1s

Insulation Class: A

Cable length: 24cm

Suitable for guide wind deflector, portable air conditioner valve, etc

Dimensions: 1.65 in x 1.22 in x 0.79 in (4.2 cm x 3.1 cm x 2.0 cm)

Weight: 1.20 oz (34 g)

* Contents

28BYJ-48 Stepper Motor and ULN2003 Motor Driver

- Key Code

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

#include <Stepper.h>

LiquidCrystal_I2C lcd(0x27,20,4);  // LCD2004

const int stepsPerRevolution = 2048; // 2048:(360 Degree), 1024:(180 degree)

// ULN2003 IN4, IN2, IN3, IN1

Stepper myStepper(stepsPerRevolution,11,9,10,8); 

int val;

void setup()

{

  lcd.init();  // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD2004");

  delay(1000);

  myStepper.setSpeed(14); 

  lcd.clear();

}

void loop()

{

  lcd.setCursor(0,0);

  lcd.print("D021:28BYJ-48");

  lcd.setCursor(0,1);

  lcd.print("B002:X113647");

  // Left 1 round

  myStepper.step(stepsPerRevolution);

  val = stepsPerRevolution;

  lcd.setCursor(0,2);

  lcd.print("right=" + (String)val + "  ");

  delay(500);

  // Right 1 round

  myStepper.step(-stepsPerRevolution);

  val = -stepsPerRevolution;

  lcd.setCursor(0,2);

  lcd.print("left=" + (String)val + "   ");

  delay(500);

}

Digital Multi Servo Tester ECS [B176]

https://www.youtube.com/watch?v=pz_NQSSGqaw

* Specs

Features:

CCPM Servo Consistency Master / Servo tester

The device also can be used as a signal generator for electric speed controller (ESC), then you can test your motor system without using a transmitter and receiver.

There are 3 modes to check servos or ESC:

Manual mode: turn the knob with different speed, check the reaction time.

Neutral mode: make the servo go back to the neutral point.

Automatic \"window wiper\" mode: make the servo swing like a window wipers in the biggest angle.

It can connect 1-3 servos simultaneously and test such as 1-3 servos consistency and so on.

You can also connect 1-3 ESC to test and compare their reaction time respectively.

It can connect 3 servos of the CCPM helicopters and select servos.

It can also connect the servo of airplanes install the steering-box and adjust planes by using such as the neutral mode and so on.

Specification:

Voltage consumption: DC4.8-6V 

Size: 48 x 42 x 17mm 

Original box: NO

Color: Blue

Item size: 48*42*17 mm

Net weight: 7g

Package weight: 13g

Packet content:

1 x multi Servo tester

TowerPro SG5010 Micro Servo (SG5010) [D032]

https://www.youtube.com/watch?v=xRpws0Ecrfc

* GitHub : https://github.com/rdiot/rdiot-d032.git

* Specs

owerPro SG5010 Micro Servo.

Small and exquisite appearance, it is convenient to carry.

Coreless motor and double ball bearing.

Less noise, light weight.

Used for model airplane accessories.

Stable performance and shock proof.

Color: Black

Connector wire length: 28.3cm

Operating speed (4.8V no load): 0.14sec/60 degrees

Operating speed (6.0V no load): 0.11sec/60 degrees

Stall torque(4.8V): (8kg/cm) (110oz/in.)

Stall torque(6.0V): (11kg/cm) (156oz/in.)

Temperature range: -30 to 60°

Dead band width: 4usec

Operation Voltage: 3.5-8.4V

Item weight: 55g

Package including:1 * Torque servo

4 * Rubber grommets

4 * Brass eyelets

5 * Screws

5 * Servo horn set

* Contents

- Key Code

#include <Servo.h>

Servo towerprosg5010; 

int pos = 0; 

void setup()

{

  towerprosg5010.attach(9); 

}

void loop()

{

  for(pos = 0; pos < 180; pos += 1)  // 0 to 180 degrees with 1 degree step

  {                                  

    towerprosg5010.write(pos);  

    delay(120);                       // time set 120 ms 

  }

}