RDIoT Demo

NRF24L01 2.4Ghz Wireless Module (NRF24L01) [S275]

https://www.youtube.com/watch?v=CVfX8fmW6Bk

GitHub : https://github.com/rdiot/rdiot-s275.git

* Specs

nRF24L01 is a single chip radio transceiver for the world wide 2.4 - 2.5 GHz ISM band. 

The transceiver consists of a fully integrated frequency synthesizer, a power amplifier, a crystal oscillator, a demodulator, modulator and Enhanced ShockBurst? protocol engine. 

Output power, frequency channels, and protocol setup are easily. 

programmable through a SPI interface. 

Current consumption is very low, only 9.0mA at an output power of -6dBm and 12.3mA in RX mode. 

Built-in Power Down and Standby modes makes power saving easily realizable. 

Maximum operating speeds up to 2Mbps, GFSK modulation efficiency, Anti-interference ability, Particularly suitable for industrial control applications. 

125 Communications channels, Multi-point communication and frequency hopping to meet the communication needs. 

Built-in hardware CRC error detection, Multipoint communication address control. 

Low-power 1.9 ~ 3.6V, only 1uA on Power down mode. 

Built-in 2.4Ghz antenna. 

Available software to set the address, only received local Address when output data(Provide interrupt instruction), can be directly connected to a variety of microcontrollers, Software programming is very convenient. 

Support 6 Data channels of data reception. 

Standard DIP Pitch Interface for embedded applications. 

* Contents

- Connect 

VCC - 3.3V

CSN - D8

MOSI - D11

IRQ - NONE

GND - GND

CE - D7

SCK - D13

MISO - D12

- parts

Rotary Encoder Module (KY-040) [S120]

- Library : https://github.com/nRF24/RF24

- Tested Library Download : RF24-master.zip

- Key Code

- RF24_TX : https://github.com/rdiot/rdiot-s275/blob/master/RF24_TX.ino

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

#include <SPI.h>

#include <nRF24L01.h>

#include <RF24.h>

LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x20 for a 16 chars and 2 line display

RF24 radio(7, 8); // SPI Bus CE, CSN 

const byte address[6] = "00001"; // RX = TX same address

int pin = A0; // Rotary Encoder Module (KY-040) [S120] : http://rdiot.tistory.com/126 [RDIoT Demo]

void setup() {

  pinMode(pin, INPUT);

  Serial.begin(9600);

  radio.begin();

  radio.openWritingPipe(address);

  radio.setPALevel(RF24_PA_MIN); // Power Level : accoding to distance : RF24_PA_MIN / RF24_PA_LOW / RF24_PA_HIGH / RF24_PA_MAX

  radio.stopListening();  // TX 

  lcd.init(); // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD1602");

  delay(1000);

  lcd.clear();

}

void loop() {

  lcd.setCursor(0,0);

  lcd.print("S275:RF24L01 TX");

  int readVal = analogRead(pin);

  readVal = map(readVal, 0, 1023, 0, 179);

  Serial.println(readVal);

  lcd.setCursor(0, 1);

  lcd.print("msg=>" + String(readVal) + "  ");

  char buf[4];

  itoa(readVal, buf, 10);

  radio.write(&buf, sizeof(buf)); //send messages to RX 

  delay(10);

}

- RX24_RX : https://github.com/rdiot/rdiot-s275/blob/master/RF24_RX.ino

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

#include <SPI.h> 

#include <nRF24L01.h>

#include <RF24.h>

#include <Servo.h> 

LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x20 for a 16 chars and 2 line display

RF24 radio(7, 8); // SPI Bus CE, CSN 

const byte address[6] = "00001"; // TX = RX same address

Servo myservo; 

int servoPin = 4; 

void setup() {

  Serial.begin(9600);

  radio.begin();

  radio.openReadingPipe(0, address);

  radio.setPALevel(RF24_PA_MIN); // Power Level : accoding to distance : RF24_PA_MIN / RF24_PA_LOW / RF24_PA_HIGH / RF24_PA_MAX

  radio.startListening(); // RX

  myservo.attach(servoPin); 

  lcd.init(); // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD1602");

  delay(1000);

  lcd.clear();

}

void loop() {

  lcd.setCursor(0,0);

  lcd.print("S275:RF24L01 RX");

  lcd.setCursor(0, 1);

  if (radio.available()) {    

    char text[4] = "";

    radio.read(&text, sizeof(text));

    Serial.println(text);

    lcd.print("rcv=>" + String(text) + "     ");

    int value = atoi(text);

     myservo.write(180-value);

  }

  delay(10);

}

- how to debug radio details 

#include <printf.h>

  printf_begin();

  radio.printDetails();

UVC Camera Servo Motor Control [P006.1]

https://www.youtube.com/watch?v=pAshFXld2N0

*GitHub : https://github.com/rdiot/rdiot-p006.1.git

* Parts

- Arduino Yun (ARDUINO-YUN) [B015]

- Logitech HD WebCam C310 (C310) [S084]

- SG90 Camera Mount [B051]

- Tower Pro SG90 Micro Servo (SG90) [D018]  

* Contents

- Control Interface 

- Source

SG90 Camera Mount [B051]

https://www.youtube.com/watch?v=gk7Mg69mgq4

* GitHub : https://github.com/rdiot/rdiot-b051.git

* Specs

Weight : 0.050kg (0.11lb.)

Size : 13cm x 9cm x 8cm (5.12in x 3.54in x 3.15in)

* Contents

- Connect

Top ----- D12

Bottom ----- D11

- Key Code

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

#include <Servo.h> 

LiquidCrystal_I2C lcd(0x27,20,4);

Servo myservo1;

Servo myservo2;

int servoPin_updown = 12;

int servoPin_leftright = 11;

int pos_updown = 0;

int pos_leftright = 0;

void setup()

{

  lcd.init();  // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD2004");

  myservo1.attach(servoPin_updown); 

  myservo2.attach(servoPin_leftright); 

  delay(1000);

  lcd.clear();

}

void loop()

{

  lcd.setCursor(0,0);

  lcd.print("B051:SG90 Mount");

  for(pos_leftright = 0; pos_leftright < 180; pos_leftright += 1) 

  { 

    myservo2.write(pos_leftright);

    //lcd.setCursor(0,1);

    //lcd.print("pos0~179=" + (String)pos + "  " );

    delay(10); 

  }

  for(pos_leftright = 180; pos_leftright>=0; pos_leftright-=1)

  { 

    myservo2.write(pos_leftright); 

    //lcd.setCursor(0,2);

    //lcd.print("pos180~1=" + (String)pos + "  " );

    delay(10); 

  } 

  for(pos_updown = 80; pos_updown < 180; pos_updown += 1) 

  { 

    myservo1.write(pos_updown);

    //lcd.setCursor(0,1);

    //lcd.print("pos0~179=" + (String)pos + "  " );

    delay(10); 

  }

  for(pos_updown = 180; pos_updown>=80; pos_updown-=1)

  { 

    myservo1.write(pos_updown); 

    //lcd.setCursor(0,2);

    //lcd.print("pos180~1=" + (String)pos + "  " );

    delay(10); 

  } 

}

Tower Pro SG90 Micro Servo (SG90) [D018]

https://www.youtube.com/watch?v=qdUgJtBClZ4

* GitHub : https://github.com/rdiot/rdiot-d018.git

* Specs

Speed: 0.12 second / 60 degrees rotation

Torque: 1.2-1.4kg @ 4.8V~6V power

Comes with full ranged connectivity accessories and mounting screws

Working temperature: -30 to +60 degrees Celsius

Dead band setting: 7 microseconds

- Connect

Brown - GND

Red - 5V

Orange - D12

- Key Code

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

#include <Servo.h> 

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

Servo myservo; 

int servoPin = 12;

int pos = 0; 

void setup()

{

  lcd.init();  // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD2004");

  myservo.attach(servoPin); 

  delay(1000);

  lcd.clear();

}

void loop()

{

  lcd.setCursor(0,0);

  lcd.print("D018:SG90 Servo");

  for(pos = 0; pos < 180; pos += 1) 

  { 

    myservo.write(pos);

    lcd.setCursor(0,1);

    lcd.print("pos0~179=" + (String)pos + "  " );

    delay(0); // Control Speed by delay time.

  }

  for(pos = 180; pos>=1; pos-=1)

  { 

    myservo.write(pos); 

    lcd.setCursor(0,2);

    lcd.print("pos180~1=" + (String)pos + "  " );

    delay(0); 

  } 

}

Amp Pot B5K (B5K) [S027]

https://www.youtube.com/watch?v=7J1AMx28ROs

* Specs

5k

2W @ 70°C ambient

Non-rotational key

Temp. range: -55°C to +120°C

Shaft length: 0.875" 

Shaft dia.: 0.25"

Mounting hole: 0.375" 

Max. panel thickness: 0.25"

* Contents

- Connect

Potentiometer

LEFT - 5V

MIDDLE - A0 (OUT)

RIGHT - GND

Servo

Black - GND

Red - 5V

Red -  D12

- Key Code

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

#include <Servo.h> 

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

Servo myservo; 

int servoPin = 12;

int potPin = A0;

int val;

void setup()

{

  lcd.init();  // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD2004");

  myservo.attach(servoPin); 

  delay(1000);

  lcd.clear();

}

void loop()

{

  val = analogRead(potPin);

  val = map(val, 0, 1023, 0, 179);

  lcd.setCursor(0,0);

  lcd.print("S027:B5K");

  myservo.write(val);

  lcd.setCursor(0,1);

  lcd.print("pos0~179=" + (String)val + "  " );

  delay(10); 

}