Compass: Difference between revisions
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* 0.96" OLED Display https://www.adafruit.com/products/684 | * 0.96" OLED Display https://www.adafruit.com/products/684 | ||
* FTDI/USB http://www.parallax.com/catalog/integrated-circuits/ftdi | * FTDI/USB http://www.parallax.com/catalog/integrated-circuits/ftdi | ||
Future potential SMD components | |||
* MAG3110FCR1 http://www.digikey.com/product-detail/en/MAG3110FCR1/MAG3110FCR1CT-ND/3524267 | |||
== Code == | == Code == |
Revision as of 21:27, 17 December 2013
Breadboard with Compass module and Boarduino, calibration button with indicator, FTDI serial out connected.
Components
- Compass Module CMPS03 http://www.robot-electronics.co.uk/htm/cmps3tech.htm
- DC Boarduino http://learn.adafruit.com/boarduino-kits/dc-parts-list
- FTDI Friend http://www.adafruit.com/products/284
Other potential components
- SCF5740 Siemens (OSRAM) 4 digit display http://catalog.osram-os.com/media/_en/Graphics/00034126_0.pdf
- 0.96" OLED Display https://www.adafruit.com/products/684
- FTDI/USB http://www.parallax.com/catalog/integrated-circuits/ftdi
Future potential SMD components
Code
The following will give a compass heading via serial monitor
/* CMPS03 with arduino I2C example This will display a value of 0 - 359 for a full rotation of the compass. The SDA line is on analog pin 4 of the arduino and is connected to pin 3 of the CMPS03. The SCL line is on analog pin 5 of the arduino and is conected to pin 2 of the CMPS03. Both SDA and SCL are also connected to the +5v via a couple of 1k8 resistors. A switch to callibrate the CMPS03 can be connected between pin 6 of the CMPS03 and the ground. */ #include <Wire.h> #define ADDRESS 0x60 //defines address of compass void setup(){ Wire.begin(); //conects I2C Serial.begin(9600); } void loop(){ byte highByte; byte lowByte; Wire.beginTransmission(ADDRESS); //starts communication with cmps03 Wire.write(2); //Sends the register we wish to read Wire.endTransmission(); Wire.requestFrom(ADDRESS, 2); //requests high byte while(Wire.available() < 2); //while there is a byte to receive highByte = Wire.read(); //reads the byte as an integer lowByte = Wire.read(); int bearing = ((highByte<<8)+lowByte)/10; Serial.println(bearing); delay(100); }