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--- digispark:tutorials:gps [2014/11/09 21:05]
digistump
+++ digispark:tutorials:gps [2016/06/09 12:03] (current)
@@ Line 2: / Line 2: @@
 =====Product Description:=====
-[[https://s3.amazonaws.com/digispark/images/m/gps.jpg|{{https://s3.amazonaws.com/digispark/images/t/gps.jpg}}]]
+[[https://s3.amazonaws.com/digispark/images/m/gps1.JPG|{{https://s3.amazonaws.com/digispark/images/t/gps1.JPG}}]]
-[[https://s3.amazonaws.com/digispark/images/m/gps.jpg|{{https://s3.amazonaws.com/digispark/images/t/gps.jpg}}]]
+[[https://s3.amazonaws.com/digispark/images/m/gps6.JPG|{{https://s3.amazonaws.com/digispark/images/t/gps6.JPG}}]]
 This is an unassembled kit and requires basic soldering. This is designed for use with the Digispark development board, which is not included.
@@ Line 30: / Line 30: @@
 =====Assembly:=====
+**NOTE:** Before you start: If you have a multimeter check for shorts between the GND pin hole and the other pin holes - if you find any please send us an email at support at digistump dot com and we will replace the board.
+[[https://s3.amazonaws.com/digispark/images/m/gps1.JPG|{{https://s3.amazonaws.com/digispark/images/t/gps1.JPG}}]]
-[[https://s3.amazonaws.com/digispark/images/m/gps.jpg|{{https://s3.amazonaws.com/digispark/images/t/gps.jpg}}]]
+Insert a strip of 4 header pins into the top of the board in the four holes labeled for the GPS module. Solder on the bottom of the board.
+[[https://s3.amazonaws.com/digispark/images/m/gps2.JPG|{{https://s3.amazonaws.com/digispark/images/t/gps2.JPG}}]]
@@ Line 41: / Line 45: @@
 **Note:** If you are using stackable headers, use them here instead of the standard male headers.
-[[https://s3.amazonaws.com/digispark/images/m/gps.jpg|{{https://s3.amazonaws.com/digispark/images/t/gps.jpg}}]]
+[[https://s3.amazonaws.com/digispark/images/m/gps3.JPG|{{https://s3.amazonaws.com/digispark/images/t/gps3.JPG}}]]
-Insert a strip of 4 header pins into the top of the board in the four holes labeled for the GPS module. Solder on the bottom of the board.
-[[https://s3.amazonaws.com/digispark/images/m/gps.jpg|{{https://s3.amazonaws.com/digispark/images/t/gps.jpg}}]]
 Insert the GPS module into the front of the board onto the 4 pins. Solder the pins to the module, optionally snip off the excess.
-[[https://s3.amazonaws.com/digispark/images/m/gps.jpg|{{https://s3.amazonaws.com/digispark/images/t/gps.jpg}}]]
+[[https://s3.amazonaws.com/digispark/images/m/gps4.JPG|{{https://s3.amazonaws.com/digispark/images/t/gps4.JPG}}]]
+[[https://s3.amazonaws.com/digispark/images/m/gps5.JPG|{{https://s3.amazonaws.com/digispark/images/t/gps5.JPG}}]]
+Optionally - attach the antenna to the board by applying a blob of solder to each solder point and the antenna case. Don't apply too much heat or you may damage the antenna.
-=====Programming:=====
+[[https://s3.amazonaws.com/digispark/images/m/gps6.JPG|{{https://s3.amazonaws.com/digispark/images/t/gps6.JPG}}]]
-Grab the library at: https://github.com/mikalhart/TinyGPS
-and use the sketch below as an example sketch:
-<code arduino>
+=====Programming:=====
-#include <DigiCDC.h>
-#include <TinyGPS.h>
-TinyGPS gps;
-void setup()
-{
-  SerialUSB.begin();
-  Serial.begin(9600); //this is the connection to the GPS
-}
-void loop()
-{
-  bool newData = false;
-  unsigned long chars;
-  unsigned short sentences, failed;
-  // For one second we parse GPS data and report some key values
+NOTE: The first time you use the GPS module it may take 5 minutes or more, near a window or outside, to acquire a fix and produce data.
-  for (unsigned long start = millis(); millis() - start < 1000;)
-  {
-    while (Serial.available())
-    {
-      char c = Serial.read();
-      // SerialUSB.write(c); // uncomment this line if you want to see the GPS data flowing
-      if (gps.encode(c)) // Did a new valid sentence come in?
-        newData = true;
-    }
-  }
-  if (newData)
+A GPS example can be found in the newest Digistump IDE Release - 1.5.8A or higher - under File->Examples->Digispark_Examples->GPS
-  {
+NOTE: You must select the Digispark Pro (16Mhz) (64 byte buffer) for the example to work!
-    float flat, flon;
-    unsigned long age;
-    gps.f_get_position(&flat, &flon, &age);
-    SerialUSB.print("LAT=");
-    SerialUSB.print(flat == TinyGPS::GPS_INVALID_F_ANGLE ? 0.0 : flat, 6);
-    SerialUSB.print(" LON=");
-    SerialUSB.print(flon == TinyGPS::GPS_INVALID_F_ANGLE ? 0.0 : flon, 6);
-    SerialUSB.print(" SAT=");
-    SerialUSB.print(gps.satellites() == TinyGPS::GPS_INVALID_SATELLITES ? 0 : gps.satellites());
-    SerialUSB.print(" PREC=");
-    SerialUSB.print(gps.hdop() == TinyGPS::GPS_INVALID_HDOP ? 0 : gps.hdop());
-  }
-  gps.stats(&chars, &sentences, &failed);
-  SerialUSB.print(" CHARS=");
-  SerialUSB.print(chars);
-  SerialUSB.print(" SENTENCES=");
-  SerialUSB.print(sentences);
-  SerialUSB.print(" CSUM ERR=");
-  SerialUSB.println(failed);
-  if (chars == 0)
-    SerialUSB.println("Error"); //** No characters received from GPS: check wiring **
-}
-</code>

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