Project #12: Robotics – Transmitter and Receiver – Mk14

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#DonLucElectronics #DonLuc #Robotics #Arduino #Fio #XBee #XBeeS1 #Transmitter #Project #Fritzing #Programming #Electronics #Microcontrollers #Consultant

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Serial

Used for communication between the Arduino board and a computer or other devices. All Arduino boards have at least one serial port, and some have several. Fio v3 ATmega32U4 board, Serial1 pins, 0(RX), 1(TX). On Fio v3 ATmega32U4, pins 0 and 1 are used for communication with the computer. Connecting anything to these pins can interfere with that communication, including causing failed uploads to the board. You can use the Arduino environment’s built-in serial monitor to communicate with an Arduino board. Click the serial monitor button in the toolbar and select the same baud rate used in the call to begin(). Serial communication on pins TX/RX uses TTL logic levels 3.3V . Don’t connect these pins directly to an RS232 serial port, they operate at +/- 12V and can damage your Arduino board.

DL2112Mk04

2 x Fio v3 – ATmega32U4
2 x XBee S1
2 x Lithium Ion Battery – 850mAh
1 x Thumb Joystick
1 x SparkFun Thumb Joystick Breakout
1 x Slide Pot (Small)
1 x Slide Potentiometer Knob
1 x LED Green
1 x Half-Size Breadboard
1 x SparkFun Cerberus USB Cable

Fio v3 – ATmega32U4 – Transmitter

XBee S1: Transmitter

CH Channel: C
PAN Id: 3333
SH Serial Number: 13A200
SL Serial Number: 40717A1F
CE Coordinator: Coordinator
BD: 9600

RX0 – Digital 0
TX0 – Digital 1
PO0 – Analog A0
JY0 – Analog A1
JY1 – Analog A2
SE0 – Digital 16
VIN – +3.3V
GND – GND

DL2112Mk04t.ino

/* ***** Don Luc Electronics © *****
Software Version Information
Project #12: Robotics - XBee S1 - Transmitter - Mk14
12-04
DL2112Mk04t.ino
1 x Fio v3 - ATmega32U4
1 x XBee S1
1 x Lithium Ion Battery - 850mAh
1 x Thumb Joystick
1 x SparkFun Thumb Joystick Breakout
1 x Slide Pot (Small)
1 x Slide Potentiometer Knob
1 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// EEPROM library to read and write EEPROM with unique ID for unit
#include <EEPROM.h>

// Communication
unsigned long dTime = 50;

// Slide Pot (Small)
// Select the input pin for the slide pot
// Power
const int iSP1 = A0;
// Power to store the value
int iPower = 0;

// Connections to joystick
// Vertical
const int VERT = A1;
// Horizontal
const int HORIZ = A2;
// Pushbutton
const int SEL = 16;
// Initialize variables for analog and digital values
int vertical;
int horizontal;
int select;

// Software Version Information
// Version
String sver = "12-14t";
// Unit ID Information
// UID
String uid = "";

void loop()
{

  // Thumb Joystick
  isThumbJoystick();
    
  // Process Message
  isProcessMessage();

  delay( dTime );
  
}

getEEPROM.ino

// EEPROM
// is UID
void isUID()
{
  
  // Is Unit ID
  // UID
  uid = "";
  for (int x = 0; x < 5; x++)
  {
    uid = uid + char(EEPROM.read(x));
  }
  
}

getProcessMessage.ino

// Process Message
// isProcessMessage
void isProcessMessage() {
  
   // Loop through serial buffer
   // Print = "<" + vertical + "|" + horizontal + "|" + select + "|" + iValue + "|" + sver + "|" + uid + "*"
      
   Serial1.print( '<'  );
   Serial1.print( vertical );
   Serial1.print( '|' );
   Serial1.print( horizontal );
   Serial1.print( '|' );
   Serial1.print( select );
   Serial1.print( '|' );
   Serial1.print( iPower );
   Serial1.print( '|' );
   Serial1.print( sver );
   Serial1.print( '|' );
   Serial1.print( uid );
   Serial1.println( '*' );

}

getThumbJoystick.ino

// Thumb Joystick
void isThumbJoystick() {

  // Read all values from the joystick
  // Joystick was sitting around 520 for the vertical and horizontal values
  // Will be 0-1023
  vertical = analogRead(VERT);
  // Will be 0-1023
  horizontal = analogRead(HORIZ);
  // Will be HIGH (1) if not pressed, and LOW (0) if pressed
  select = digitalRead(SEL);
  // Read the value
  // Power be 0-1023
  iPower = analogRead( iSP1 );
 
}

setup.ino

// Setup
void setup()
{

  // EEPROM Unit ID
  isUID();
  
  // Pause
  delay(5);
  
  // Make the SEL line an input
  pinMode(SEL, INPUT_PULLUP);
  
  // Open Serial1 port at 9600 baud
  Serial1.begin( 9600 );

  // Pause
  delay(5);

}

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Fio v3 – ATmega32U4 – Receiver

XBee S1: Receiver

CH Channel: C
PAN Id: 3333
SH Serial Number: 13A200
SL Serial Number: 4076E2C5
CE Coordinator: End Device
BD: 9600

RX0 – Digital 0
TX0 – Digital 1
LED – Digital 6
VIN – +3.3V
GND – GND

DL2112Mk04r.ino

/* ***** Don Luc Electronics © *****
Software Version Information
Project #12: Robotics - Receiver - Mk14
12-04
DL2112Mk04r.ino
1 x Fio v3 - ATmega32U4
1 x XBee S1
1 x Lithium Ion Battery - 850mAh
1 x LED Green
1 x Half-Size Breadboard
1 x SparkFun Cerberus USB Cable
*/

// Include the library code:
// EEPROM library to read and write EEPROM with unique ID for unit
#include <EEPROM.h>

// LED Green
int iLEDGreen = 6;

// Process Message
// Start
bool bStart = false;
// End
bool bEnd   = false;
// Variable to store the incoming byte
int incb = 0;
// Message
String msg = "";
// Index
byte in = 0;
int x = 0;

// Software Version Information
String sver = "12-14r";
// Unit ID information
String uid = "";

void loop() {

  // Check for serial messages
  isProcessMessage();

}

getEEPROM.ino

// EEPROM
// isUID
void isUID()
{
  
  // Is Unit ID
  uid = "";
  for (int x = 0; x < 5; x++)
  {
    uid = uid + char(EEPROM.read(x));
  }
  
}

getProcessMessage.ino

// ProcessMessage
// isProcessMessage
void isProcessMessage() {
   
  // Loop through serial buffer one byte at a time until you reach * which will be end of message
  while ( Serial1.available() > 0 ) 
  {
      
      // Read the incoming byte:
      incb = Serial1.read();
      
      // Start the message when the '<' symbol is received
      if(incb == '<')
      {
        
        bStart = true;
        in = 0;
        msg = "";
        // Done reading
        
      }
      // End the message when the '*' symbol is received
      else if(incb == '*')
      {
        
        bEnd = true;
        x = msg.length();
        msg.remove( x , 1);
        // Done reading
        
        break;
      }
      // Read the message
      else
      {
        
        msg = msg + char(incb);
        in++;

      }
      
   }

   // Start - End
   if( bStart && bEnd)
   {
    
      digitalWrite(iLEDGreen, HIGH);
      in = 0;
      msg = "";
      bStart = false;
      bEnd = false;
      
   }

}

setup.ino

// Setup
void setup() {

  // Open the serial port at 9600 bps:
  Serial1.begin( 9600 );

  // Pause
  delay(5);

  // EEPROM Unit ID
  isUID();
  
  // Pause
  delay(5);
  
  // LED Green
  pinMode(iLEDGreen, OUTPUT);
  digitalWrite(iLEDGreen, LOW);

}

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• Single-Board Microcontrollers (PIC, Arduino, Raspberry Pi,Espressif, etc…)
• IoT
• Robotics
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• IoT
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• Espressif
• Robotics
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