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sparrow_v4_en [2015/10/08 15:35]
dan.tudose [Shades and Colors] 		sparrow_v4_en [2016/11/03 16:34] (current)
dan.tudose [Light Sensor]
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 ====== Sparrow Wireless Sensor Node ====== ====== Sparrow Wireless Sensor Node ======
  
 +{{:sparrow_small.png?70 |}}
 Sparrow is an excellent platform for IoT, ultra low-power wireless computing and energy harvesting, with state-of-the-art sensing capabilities. It was designed to work with a range of wireless protocols, including IEEE 802.15.4, 6LoWPAN and ZigBee. Sparrow is an excellent platform for IoT, ultra low-power wireless computing and energy harvesting, with state-of-the-art sensing capabilities. It was designed to work with a range of wireless protocols, including IEEE 802.15.4, 6LoWPAN and ZigBee.
  
Line 166: Line 167:
 } }
  
 +</code>
 +
 +
 +===== Light Sensor =====
 +
 +<imgcaption light | SI1145 ambient light sensor and AVR connection schematic>{{ ::si1145.png |}}</imgcaption>
 +
 +We will use the [[https://learn.adafruit.com/adafruit-si1145-breakout-board-uv-ir-visible-sensor/overview|Adafruit_SI1145]] library to interface with the sensor. Unzip the content of this {{::adafruit_si1145.zip| zip file}} into the //Arduino\libraries// or use Arduino IDE's Add ZIP Library command.
 +
 +
 +<code C>
 +#include <Wire.h>
 +#include "Adafruit_SI1145.h"
 +
 +int controlPin = 7;
 +Adafruit_SI1145 uv = Adafruit_SI1145();
 +
 +void setup() {
 +  pinMode(controlPin, OUTPUT);  //sensor on/off control
 +  delay(100);
 +  digitalWrite(controlPin, LOW);
 +  
 +  delay(1000);
 +  
 +  Serial.begin(9600);
 +  
 +  Serial.println("Adafruit SI1145 test");
 +  
 +  if (! uv.begin()) {
 +    Serial.println("Didn't find Si1145");
 +    while (1);
 +  }
 +
 +  Serial.println("OK!");
 +}
 +
 +void loop() {
 +    
 +  Serial.println("===================");
 +  Serial.print("Vis: "); Serial.println(uv.readVisible());
 +  Serial.print("IR: "); Serial.println(uv.readIR());
 +  
 +  // Uncomment if you have an IR LED attached to LED pin!
 +  //Serial.print("Prox: "); Serial.println(uv.readProx());
 +
 +  float UVindex = uv.readUV();
 +  // the index is multiplied by 100 so to get the
 +  // integer index, divide by 100!
 +  UVindex /= 100.0;  
 +  Serial.print("UV: ");  Serial.println(UVindex);
 +
 +  delay(1000);
 +}
 +</code>
 +
 +===== Barometer =====
 +
 +<imgcaption barometer |  MS5637 barometer/altimeter>{{ ::ms5637-30ba_600.jpg |}}</imgcaption>
 +
 +The Sparrow nodes are using the [[http://www.meas-spec.com/product/pressure/MS5637-02BA03.aspx|MS5637]] pressure sensor for barometric and altimeter measurements. We will use the [[https://github.com/freetronics/BaroSensor|Freetronics]] library to interface with it.
 +
 +<code C>
 +#include <Wire.h>
 +#include <BaroSensor.h>
 +int controlPin = 7;
 +
 +void setup()
 +{
 +  pinMode(controlPin, OUTPUT);  //sensor on/off control
 +  delay(100);
 +  
 +  digitalWrite(controlPin, LOW);
 +  
 +  Serial.begin(9600);
 +  BaroSensor.begin();
 +}
 +
 +void loop()
 +{
 +  if(!BaroSensor.isOK()) {
 +    Serial.print("Sensor not Found/OK. Error: "); 
 +    Serial.println(BaroSensor.getError());
 +    BaroSensor.begin(); // Try to reinitialise the sensor if we can
 +  }
 +  else {
 +    Serial.print("Temperature: "); 
 +    Serial.println(BaroSensor.getTemperature());
 +    Serial.print("Pressure:    ");
 +    Serial.println(BaroSensor.getPressure());
 +  }
 +  delay(1000);
 +}
 +</code>
 +
 +===== Radio Transmission =====
 +
 +We will use the [[https://code.google.com/p/zigduino-radio/|ZigduinoRadio]] library in order to send data between two or more Sparrow nodes. You can download the library from {{::zigduinoradio_201111130010.zip|here}}.
 +
 +Here's an example code: 
 +
 +<code C>
 +/*
 + 
 +Run this sketch on two Zigduinos, open the serial monitor at 9600 baud, and type in stuff
 +Watch the Rx Zigduino output what you've input into the serial port of the Tx Zigduino
 + 
 +*/
 + 
 +#include <ZigduinoRadio.h>
 + 
 +void setup()
 +{
 +  ZigduinoRadio.begin(11);
 +  Serial.begin(9600);
 + 
 +  ZigduinoRadio.attachError(errHandle);
 +  ZigduinoRadio.attachTxDone(onXmitDone);
 +}
 + 
 +void loop()
 +{
 +  if (Serial.available())
 +  {
 +    ZigduinoRadio.beginTransmission();
 + 
 +    Serial.println();
 +    Serial.print("Tx: ");
 + 
 +    while(Serial.available())
 +    {
 +      char c = Serial.read();
 +      Serial.write(c);
 +      ZigduinoRadio.write(c);
 +    }
 + 
 +    Serial.println(); 
 + 
 +    ZigduinoRadio.endTransmission();
 +  }
 + 
 +  if (ZigduinoRadio.available())
 +  {
 +    Serial.println();
 +    Serial.print("Rx: ");
 + 
 +    while(ZigduinoRadio.available())
 +      Serial.write(ZigduinoRadio.read());
 + 
 +    Serial.println();
 +    Serial.print("LQI: ");
 +    Serial.print(ZigduinoRadio.getLqi(), 10);
 +    Serial.print(", RSSI: ");
 +    Serial.print(ZigduinoRadio.getLastRssi(), 10);
 +    Serial.print(" dBm, ED: ");
 +    Serial.print(ZigduinoRadio.getLastEd(), 10);
 +    Serial.println("dBm");
 +  }
 + 
 + 
 +  delay(1000);
 +}
 + 
 +void errHandle(radio_error_t err)
 +{
 +  Serial.println();
 +  Serial.print("Error: ");
 +  Serial.print((uint8_t)err, 10);
 +  Serial.println();
 +}
 + 
 +void onXmitDone(radio_tx_done_t x)
 +{
 +  Serial.println();
 +  Serial.print("TxDone: ");
 +  Serial.print((uint8_t)x, 10);
 +  Serial.println();
 +}
 </code> </code>
sparrow_v4_en.1444307738.txt.gz · Last modified: 2015/10/08 15:35 by dan.tudose

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