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Arduino gps2 060314

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Arduino gps2 060314

  1. 1. Arduino 101 // Further Techniques // Ben Freeth // 080314
  2. 2. What are these?
  3. 3. What are these? • Assume: the Earth. Or, smaller domain, but assume that’s the largest space you have to look in • Use the time • Ask someone • Association: who or what are you near? • Proximity to phone boxes, public transport stops and utility markings • Use a map • Which cell/public phone operators are available? • Phone number syntax • Newspapers available • Languages being spoken • Street names • Street corners / intersections • Street numbers • Business names • Mobile phone location (triangulation / triliteration) • Triangulation / Triliteration on other radio infrastructures e.g. TV, Radio, Public Wi-Fi • GPS, assisted GPS, WAAS, and other GPS enhancements • Landmarks and “littlemarks” • Dead reckoning
  4. 4. August 1956: GPS prognostication // A network of geosynchronous satellites circling the globe
  5. 5. Phantom Beacons
  6. 6. Determining Position – distance is only part of this (1D)
  7. 7. What? What?
  8. 8. Receivers
  9. 9. NMEA 0183 protocol Serial Protocol 4800 bits per second (Baud Rate) 8 data bits No parity 1 stop bit Send via RS-232 or TTL serial levels
  10. 10. Data in the NMEA protocol
  11. 11. Data in the NMEA protocol
  12. 12. $GPRMC,15525.000,A,4043.8432,N,07359.7654,W,0.10,11.88,200407, , *20 Message Identifier Time (GMT) Status of data (valid = A, not valid = V) (Active, Void) Latitude North South Indicator Longitude East/West Indicator Speed Over Ground Course Over Ground Date Magnetic Variation Mode Checksum
  13. 13. Mouna Andraos & Sonali Sridhar
  14. 14. http://arduiniana.org/2009/10/the-reverse-geocache-puzzle/
  15. 15. Blast Theory (2004)
  16. 16. Soul Walker 10 Year Map Of Berlin Soul gpx track on openstreetmap background showing 3-day trip to UK and path of soul
  17. 17. "the study of the precise laws and specific effects of the geographical environment, consciously organized or not, on the emotions and behavior of individuals.” "a whole toy box full of playful, inventive strategies for exploring cities... just about anything that takes pedestrians off their predictable paths and jolts them into a new awareness of the urban landscape."
  18. 18. Philipp Ronnenberg Maps as power…. http://www.openps.info
  19. 19. -165 dBm sensitivity, 10 Hz updates, 66 channels Low power module - only 20mA current draw, half of most GPS's Assembled & tested shield for Arduino Uno/Duemilanove/Diecimila/Leonardo MicroSD card slot for datalogging onto a removable card RTC battery included, for up to 7 years backup Built-in datalogging to flash PPS output on fix >25Km altitude Internal patch antenna + u.FL connector for external active antenna Power, Pin #13 and Fix status LED Big prototyping area
  20. 20. Direct Connect - Soft Serial selected - Bare Minimum Sketch - Use the serial monitor to look at the raw strings 9600 baud
  21. 21. Need – Adafruit_GPS library https://github.com/adafruit/Adafruit-GPS-Library Leo Echo (test this sketch) SoftwareSerial mySerial(8, 7); // Make sure these are set in the code Find the line about the Uno – uncomment the line recommended Look at SoftwareSerial on Arduino.cc to understand what it does: http://arduino.cc/en/Reference/SoftwareSerial?action=sourceblock&num=1 All data? Or just some of the NMEA sentences? Logging – need SD library (give them yours) // they have this shield_sdlog (arduino ino file to use to log data)
  22. 22. Go and collect some data
  23. 23. http://www.gpsvisualizer.com
  24. 24. In summary: You should now have a good understanding of creating interactive projects that utilise GPS for locating where someone or something is
  25. 25. • • • • • • Pick a location Write code to determine how far you are away from this location using GPS Display this data on an lcd screen Try out the TinyGPS++ library Specifically the courseTo() function (should enable autonomous route finding) Teach yourself to write functions in Arduino IDE – there are many online resources for this
  26. 26. Parsing Data Processing  Open Office  Excel  .kml files  Google Maps // Hamster Map 
  27. 27. Extending this Drone UAV // unmanned flight  Waymarkers // missions   Gps in wearables… context location aware… - papers about this??

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