Science station communication code created by Akira Wong

Arduino Code/Science_Slave_Send/Science_Slave_Send.ino

+// Wire Slave Sender
+// by Nicholas Zambetti <http://www.zambetti.com>
+
+// Demonstrates use of the Wire library
+// Sends data as an I2C/TWI slave device
+// Refer to the "Wire Master Reader" example for use with this
+
+// Created 29 March 2006
+
+// This example code is in the public domain.
+
+
+
+
+
+char Message[] = "";
+
+
+
+#include <Wire.h>
+
+void setup()
+{
+  Wire.begin(2);                // join i2c bus with address #2
+  Wire.onRequest(requestEvent); // register event
+}
+
+void loop()
+{
+  Message = ""
+  //Humidity Reading
+  // read the value from the pin
+  double humReading = 0;
+  humReading = analogRead(humPin); 
+  // calculate the sensor humidity
+  if(humcalibrated){
+    double sensorRH = humReading/humcalibratedValue*100.0;
+    Serial.print(sensorRH);
+    Serial.println("%");
+  }
+  //End Humidity Reading
+  
+  //pH Reading
+  float Count;
+  float Voltage;
+  float pH;
+  Count = analogRead(pHPin);
+  Voltage = Count / 1023 * 5.0;// convert from count to raw voltage
+  pH = Voltage/0.36;
+  Serial.print("Voltage: ");
+  Serial.println(Voltage);
+  Serial.print("pH: ");
+  Serial.println(pH);
+  //End pH Reading
+  
+  //CURRENT MESSAGE LENGTH IS 12
+  Message = (("p:" + pH).substring(0,3)) + (("h:" + sensorRH).substring(0,3));
+  
+  delay(TimeBetweenReadings);// delay in between reads for stability
+}
+
+// function that executes whenever data is requested by master
+// this function is registered as an event, see setup()
+void requestEvent()
+{
+  Wire.write(Message); // respond with message of 6 bytes
+                       // as expected by master
+}

Arduino Code/UDPtoDualPWM/UDPtoDualPWM.ino

-#include <SPI.h>         // needed for Arduino versions later than 0018
-#include <Ethernet.h>
-#include <EthernetUdp.h>         // UDP library from: bjoern@cs.stanford.edu 12/30/2008
-
-// PWM output ports
-const int LEFT_MOTOR_PWM = 3;
-const int RIGHT_MOTOR_PWM = 5;
-
-// Port to listen for UDP connections on 
-const int UDP_PORT = 8888;
-
-// ROBOTEQ constants
-const int ROBOTEQ_MIN_FREQUENCY = 1250, ROBOTEQ_MAX_FREQUENCY = 1750;
-
-Servo leftMotor;
-Servo rightMotor;
-
-// Enter a MAC address and IP address for your controller below.
-// The IP address will be dependent on your local network:
-byte mac[] = {
-  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
-};
-IPAddress ip(192, 168, 1, 177);
-
-// buffers for receiving and sending data
-char packetBuffer[UDP_TX_PACKET_MAX_SIZE]; //buffer to hold incoming packet,
-char  ReplyBuffer[] = "acknowledged";       // a string to send back
-
-// An EthernetUDP instance to let us send and receive packets over UDP
-EthernetUDP Udp;
-
-void setup() {
-  // Initialize drive motors
-  leftMotor.attach(LEFT_MOTOR_PWM);
-  rightMotor.attach(RIGHT_MOTOR_PWM);
-  leftMotor.writeMicroseconds(0);
-  rightMotor.writeMicroseconds(0);
-  
-  // start the Ethernet and UDP:
-  Ethernet.begin(mac, ip);
-  Udp.begin(UDP_PORT);
-
-  Serial.begin(9600);
-}
-
-void loop() {
-  // if there's data available, read a packet
-  int packetSize = Udp.parsePacket();
-  if (packetSize)
-  {
-    Serial.print("Received packet of size ");
-    Serial.println(packetSize);
-    Serial.print("From ");
-    IPAddress remote = Udp.remoteIP();
-    for (int i = 0; i < 4; i++)
-    {
-      Serial.print(remote[i], DEC);
-      if (i < 3)
-      {
-        Serial.print(".");
-      }
-    }
-    Serial.print(", port ");
-    Serial.println(Udp.remotePort());
-
-    // read the packet into packetBufffer
-    Udp.read(packetBuffer, UDP_TX_PACKET_MAX_SIZE);
-    int *buffer;
-    for (int i = 0; i < packetSize; i++) {
-      readByteAsInt(packetBuffer[i], buffer, 1);
-    }
-    Serial.println("Contents:");
-    Serial.println(packetBuffer);
-    Serial.println("Converted:");
-    for (int i = 0; i < packetSize; i++) {
-      Serial.println(buffer[i]); 
-    }
-
-    // send a reply, to the IP address and port that sent us the packet we received
-    Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
-    Udp.write(ReplyBuffer);
-    Udp.endPacket();
-  }
-  delay(10);
-}

Arduino Code/consolidated_pH_Humidity_code/consolidated_pH_Humidity_code.ino

+const int humPin = A0;
+boolean humcalibrated = true;
+double humcalibratedValue = 640.0;
+int TimeBetweenReadings = 500;
+const int pHPin = A1;
+void setup() {
+  // initialize serial communications:
+  Serial.begin(9600);
+}
+
+void loop() {
+  
+  //Humidity Reading
+  // read the value from the pin
+  double humReading = 0;
+  humReading = analogRead(humPin); 
+  // calculate the sensor humidity
+  if(humcalibrated){
+    double sensorRH = humReading/humcalibratedValue*100.0;
+    Serial.print(sensorRH);
+    Serial.println("%");
+  }
+  //End Humidity Reading
+  
+  //pH Reading
+  float Count;
+  float Voltage;
+  float pH;
+  Count = analogRead(pHPin);
+  Voltage = Count / 1023 * 5.0;// convert from count to raw voltage
+  pH = Voltage/0.36;
+  Serial.print("Voltage: ");
+  Serial.println(Voltage);
+  Serial.print("pH: ");
+  Serial.println(pH);
+  //End pH Reading
+  
+  
+  delay(TimeBetweenReadings);// delay in between reads for stability
+}
+

Arduino Code/receiveOverEthernet/receiveOverEthernet.ino

-#include <SPI.h>         // needed for Arduino versions later than 0018
-#include <Ethernet.h>
-#include <EthernetUdp.h>         // UDP library from: bjoern@cs.stanford.edu 12/30/2008
-
-
-// Enter a MAC address and IP address for your controller below.
-// The IP address will be dependent on your local network:
-byte mac[] = {
-  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
-};
-IPAddress ip(192, 168, 1, 177);
-
-unsigned int localPort = 8888;      // local port to listen on
-
-// buffers for receiving and sending data
-char packetBuffer[UDP_TX_PACKET_MAX_SIZE]; //buffer to hold incoming packet,
-char  ReplyBuffer[] = "acknowledged";       // a string to send back
-
-// An EthernetUDP instance to let us send and receive packets over UDP
-EthernetUDP Udp;
-
-void setup() {
-  // start the Ethernet and UDP:
-  Ethernet.begin(mac, ip);
-  Udp.begin(localPort);
-
-  Serial.begin(9600);
-}
-
-void readByteAsInt(byte data, int* buffer, byte bufferSize) {
-  byte mask = 0x03;
-
-  for(byte i = 0; i < bufferSize; i++)
-  {
-    *buffer = data & mask;
-    data >>= 2;
-    buffer++;
-  } 
-}
-
-void loop() {
-  // if there's data available, read a packet
-  int packetSize = Udp.parsePacket();
-  if (packetSize)
-  {
-    Serial.print("Received packet of size ");
-    Serial.println(packetSize);
-    Serial.print("From ");
-    IPAddress remote = Udp.remoteIP();
-    for (int i = 0; i < 4; i++)
-    {
-      Serial.print(remote[i], DEC);
-      if (i < 3)
-      {
-        Serial.print(".");
-      }
-    }
-    Serial.print(", port ");
-    Serial.println(Udp.remotePort());
-
-    // read the packet into packetBufffer
-    Udp.read(packetBuffer, UDP_TX_PACKET_MAX_SIZE);
-    int *buffer;
-    for (int i = 0; i < packetSize; i++) {
-      readByteAsInt(packetBuffer[i], buffer, 1);
-    }
-    Serial.println("Contents:");
-    Serial.println(packetBuffer);
-    Serial.println("Converted:");
-    for (int i = 0; i < packetSize; i++) {
-      Serial.println(buffer[i]); 
-    }
-
-    // send a reply, to the IP address and port that sent us the packet we received
-    Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
-    Udp.write(ReplyBuffer);
-    Udp.endPacket();
-  }
-  delay(10);
-}

Arduino Code/sonar_distance/sonar_distance.ino

-/*
-
-sonar_distance.ino
-
-Created by Taylor Cramer for the Husky Robotics Team
-
-Made for use with an HC-SR04 sound-based distance center.
-
-*/
-
-const uint8_t ANALOG_PIN_OFFSET = 14;
-const uint8_t TRIG_PIN = 2, ECHO_PIN = 3;
-const int NUM_SMOOTHING_FRAMES = 5;
-
-/*
-  Triggers a short burst of sound
-*/
-void triggerSound() {
-  // Start with a short LOW pulse to ensure a clean HIGH pulse
-  digitalWrite(TRIG_PIN, LOW);
-  delayMicroseconds(2);
-  digitalWrite(TRIG_PIN, HIGH);
-  delayMicroseconds(5);
-  digitalWrite(TRIG_PIN, LOW);
-}
-
-/*
-  Converts sound to distance
-  @param microseconds length of time before echo has heard
-  @return the distance sound has traveled (inches)
-*/
-int timeToInches(long microseconds) {
-  long microseconds_per_inch = 74;
-  return (int) (microseconds / microseconds_per_inch / 2);
-}
-
-void setup() {
-  // Starts serial input
-  Serial.begin(9600);
-  pinMode(TRIG_PIN, OUTPUT);
-  pinMode(ECHO_PIN, INPUT);
-}
-
-void loop() {
-  // Trigger a burst of sound and 
-  triggerSound();
-  
-  // Read in the duration of the echo and convert to inches
-  long ping_duration = pulseIn(ECHO_PIN, HIGH);
-  
-  // This is the distance!!! USE THIS!!!!!
-  int inches = timeToInches(ping_duration);
-  
-  Serial.println(inches);
-  
-  delay(100);
-}

I2C Arduino example/receive/receive.ino

-#include <Wire.h>
-
-void setup()
-{
-    Wire.begin(4);
-    Wire.onReceive(receiveEvent);
-    Serial.begin(9600);
-    pinMode(13, OUTPUT);
-}
-
-void loop()
-{
-    delay(10);
-}
-
-void receiveEvent(int howMany)
-{
-    boolean c = Wire.read();
-    if (c)
-    {
-        digitalWrite(13, HIGH);
-    }
-    else
-    {
-        digitalWrite(13, LOW);
-    }
-}

I2C Arduino example/send/send.ino

-#include <Wire.h>
-
-//With two arduino unos: Connect A4 to A4, A5 to A5, and share common ground.
-
-void setup()
-{
-    Wire.begin();
-}
-
-boolean message = 1;
-byte x=0;
-
-void loop()
-{
-    Wire.beginTransmission(4);
-    Wire.write(message);
-    Wire.endTransmission();
-    delay(1000);
-    x++;
-    message = !message;
-}