Arduino UNO, I2C 4 digit backpack & GPS breakout woes
Moderators: adafruit_support_bill, adafruit

Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by jdoscher on Wed Dec 12, 2012 10:59 pm

I'm trying to get a simple demo project going that uses an Arduino UNO, an Adafruit GPS breakout r3, and a 4 digit, seven segment LED display. On their own, the Parsing.ino GPS sketch works fine, and so does the sevenseg.ino. GPS works all the time, but the seven segment display doesn't seem to work in my sketch. Here's what I am doing- admittedly a mutant of both stock sketches. My question is, any ideas why the display won't draw the time? Even with no GPS fix the fourdigitTime variable is still 1200.

Code: Select all | TOGGLE FULL SIZE
// Test code for Adafruit GPS modules using MTK3329/MTK3339 driver
//
// This code shows how to listen to the GPS module in an interrupt
// which allows the program to have more 'freedom' - just parse
// when a new NMEA sentence is available! Then access data when
// desired.
//
// Tested and works great with the Adafruit Ultimate GPS module
// using MTK33x9 chipset
//    ------> http://www.adafruit.com/products/746
// Pick one up today at the Adafruit electronics shop
// and help support open source hardware & software! -ada
#include <Wire.h>
#include "Adafruit_LEDBackpack.h"
#include <Adafruit_GPS.h>
#if ARDUINO >= 100
 #include <SoftwareSerial.h>
#else
  // Older Arduino IDE requires NewSoftSerial, download from:
  // http://arduiniana.org/libraries/newsoftserial/
 #include <NewSoftSerial.h>
 // DO NOT install NewSoftSerial if using Arduino 1.0 or later!
#endif

int fourdigitTime;
Adafruit_7segment matrix = Adafruit_7segment();
// Connect the GPS Power pin to 5V
// Connect the GPS Ground pin to ground
// If using software serial (sketch example default):
//   Connect the GPS TX (transmit) pin to Digital 3
//   Connect the GPS RX (receive) pin to Digital 2
// If using hardware serial (e.g. Arduino Mega):
//   Connect the GPS TX (transmit) pin to Arduino RX1, RX2 or RX3
//   Connect the GPS RX (receive) pin to matching TX1, TX2 or TX3

// If using software serial, keep these lines enabled
// (you can change the pin numbers to match your wiring):
#if ARDUINO >= 100
  SoftwareSerial mySerial(8, 7);
#else
  NewSoftSerial mySerial(8, 7);
#endif
Adafruit_GPS GPS(&mySerial);
// If using hardware serial (e.g. Arduino Mega), comment
// out the above six lines and enable this line instead:
//Adafruit_GPS GPS(&Serial1);


// Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console
// Set to 'true' if you want to debug and listen to the raw GPS sentences
#define GPSECHO  false

// this keeps track of whether we're using the interrupt
// off by default!
boolean usingInterrupt = false;
void useInterrupt(boolean); // Func prototype keeps Arduino 0023 happy

void setup() 
{
   
  // connect at 115200 so we can read the GPS fast enough and echo without dropping chars
  // also spit it out
  Serial.begin(115200);
  Serial.println("Adafruit GPS library basic test!");

  // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800
  GPS.begin(9600);
 
  // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
  // uncomment this line to turn on only the "minimum recommended" data
  //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);
  // For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since
  // the parser doesn't care about other sentences at this time
 
  // Set the update rate
  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);   // 1 Hz update rate
  // For the parsing code to work nicely and have time to sort thru the data, and
  // print it out we don't suggest using anything higher than 1 Hz

  // the nice thing about this code is you can have a timer0 interrupt go off
  // every 1 millisecond, and read data from the GPS for you. that makes the
  // loop code a heck of a lot easier!
  useInterrupt(true);

  delay(1000);
  // Ask for firmware version
  mySerial.println(PMTK_Q_RELEASE);
}


// Interrupt is called once a millisecond, looks for any new GPS data, and stores it
SIGNAL(TIMER0_COMPA_vect) {
  char c = GPS.read();
  // if you want to debug, this is a good time to do it!
  if (GPSECHO)
    if (c) UDR0 = c; 
    // writing direct to UDR0 is much much faster than Serial.print
    // but only one character can be written at a time.
}

void useInterrupt(boolean v) {
  if (v) {
    // Timer0 is already used for millis() - we'll just interrupt somewhere
    // in the middle and call the "Compare A" function above
    OCR0A = 0xAF;
    TIMSK0 |= _BV(OCIE0A);
    usingInterrupt = true;
  } else {
    // do not call the interrupt function COMPA anymore
    TIMSK0 &= ~_BV(OCIE0A);
    usingInterrupt = false;
  }
}

uint32_t timer = millis();
void loop()                     // run over and over again
{
  // in case you are not using the interrupt above, you'll
  // need to 'hand query' the GPS, not suggested :(
  if (! usingInterrupt) {
    // read data from the GPS in the 'main loop'
    char c = GPS.read();
    // if you want to debug, this is a good time to do it!
    if (GPSECHO)
      if (c) UDR0 = c;
      // writing direct to UDR0 is much much faster than Serial.print
      // but only one character can be written at a time.
  }
 
  // if a sentence is received, we can check the checksum, parse it...
  if (GPS.newNMEAreceived()) {
    // a tricky thing here is if we print the NMEA sentence, or data
    // we end up not listening and catching other sentences!
    // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
    //Serial.println(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
 
    if (!GPS.parse(GPS.lastNMEA()))   // this also sets the newNMEAreceived() flag to false
      return;  // we can fail to parse a sentence in which case we should just wait for another
  }

  // if millis() or timer wraps around, we'll just reset it
  if (timer > millis())  timer = millis();

  // approximately every 2 seconds or so, print out the current stats
  if (millis() - timer > 2000) {
    timer = millis(); // reset the timer
   
    Serial.print("\nTime: ");
    Serial.print(GPS.hour, DEC); Serial.print(':');
    Serial.print(GPS.minute, DEC); Serial.print(':');
    Serial.print(GPS.seconds, DEC); Serial.print('.');
    Serial.println(GPS.milliseconds);
  }
 
  fourdigitTime = ((GPS.hour + 12) *100)+ GPS.minute;
  matrix.print(fourdigitTime);
  matrix.drawColon(true);
  matrix.writeDisplay();
  Serial.print("fourdigitTime: "); Serial.println(fourdigitTime);
  delay(1000);
}
jdoscher
 
Posts: 91
Joined: Tue Jul 22, 2008 12:36 pm

Re: Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by adafruit_support_bill on Thu Dec 13, 2012 7:29 am

What do you see in the serial monitor when you run this?
User avatar
adafruit_support_bill
 
Posts: 31711
Joined: Sat Feb 07, 2009 10:11 am

Re: Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by adafruit_support_rick on Thu Dec 13, 2012 11:40 am

jdoscher wrote:My question is, any ideas why the display won't draw the time? Even with no GPS fix the fourdigitTime variable is still 1200.

I don't think you want the return; after you try to parse the NMEA sentence. That will simply exit the loop function, and you'll never get to the time update section. I also don't think you want the delay(1000) after you update the LEDs.

Instead, I think you want to update the LEDs when you have a valid NMEA sentence, since you'll be getting those once per second.

Code: Select all | TOGGLE FULL SIZE
uint32_t timer = millis();
void loop()                     // run over and over again
{
  // in case you are not using the interrupt above, you'll
  // need to 'hand query' the GPS, not suggested :(
  if (! usingInterrupt) {
    // read data from the GPS in the 'main loop'
    char c = GPS.read();
    // if you want to debug, this is a good time to do it!
    if (GPSECHO)
      if (c) UDR0 = c;
      // writing direct to UDR0 is much much faster than Serial.print
      // but only one character can be written at a time.
  }
 
  // if a sentence is received, we can check the checksum, parse it...
  if (GPS.newNMEAreceived()) {
    // a tricky thing here is if we print the NMEA sentence, or data
    // we end up not listening and catching other sentences!
    // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
    //Serial.println(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
 
    GPS.parse(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
 
    fourdigitTime = ((GPS.hour + 12) *100)+ GPS.minute;
    matrix.print(fourdigitTime);
    matrix.drawColon(true);
    matrix.writeDisplay();
    Serial.print("fourdigitTime: "); Serial.println(fourdigitTime);

  }

  // if millis() or timer wraps around, we'll just reset it
  if (timer > millis())  timer = millis();

  // approximately every 2 seconds or so, print out the current stats
  if (millis() - timer > 2000) {
    timer = millis(); // reset the timer
   
    Serial.print("\nTime: ");
    Serial.print(GPS.hour, DEC); Serial.print(':');
    Serial.print(GPS.minute, DEC); Serial.print(':');
    Serial.print(GPS.seconds, DEC); Serial.print('.');
    Serial.println(GPS.milliseconds);
  }
}

adafruit_support_rick
 
Posts: 13723
Joined: Tue Mar 15, 2011 11:42 am
Location: Buffalo, NY

Re: Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by jdoscher on Thu Dec 13, 2012 8:04 pm

adafruit_support wrote:What do you see in the serial monitor when you run this?


When I run the GPS parsing example, I get healthy stings. When I run the sevenseg example. I see the normal LED behavior. I get this from running my revised code below:

Code: Select all | TOGGLE FULL SIZE
Time: 0:1:17.97
fourdigitTime: 1
fourdigitTime: 1
fourdigitTime: 1
fourdigitTime: 1
fourdigitTime: 1
fourdigitTime: 1


Driverblock, I updated the code with your changes and a couple other tweaks. The LED backpack shows nothing at all- no characters are lit up.

Code: Select all | TOGGLE FULL SIZE
// Test code for Adafruit GPS modules using MTK3329/MTK3339 driver
//
// This code shows how to listen to the GPS module in an interrupt
// which allows the program to have more 'freedom' - just parse
// when a new NMEA sentence is available! Then access data when
// desired.
//
// Tested and works great with the Adafruit Ultimate GPS module
// using MTK33x9 chipset
//    ------> http://www.adafruit.com/products/746
// Pick one up today at the Adafruit electronics shop
// and help support open source hardware & software! -ada
#include <Wire.h>
#include "Adafruit_LEDBackpack.h"
#include <Adafruit_GPS.h>
#if ARDUINO >= 100
 #include <SoftwareSerial.h>
#else
  // Older Arduino IDE requires NewSoftSerial, download from:
  // http://arduiniana.org/libraries/newsoftserial/
 #include <NewSoftSerial.h>
 // DO NOT install NewSoftSerial if using Arduino 1.0 or later!
#endif

int fourdigitTime;
Adafruit_7segment matrix = Adafruit_7segment();
// Connect the GPS Power pin to 5V
// Connect the GPS Ground pin to ground
// If using software serial (sketch example default):
//   Connect the GPS TX (transmit) pin to Digital 3
//   Connect the GPS RX (receive) pin to Digital 2
// If using hardware serial (e.g. Arduino Mega):
//   Connect the GPS TX (transmit) pin to Arduino RX1, RX2 or RX3
//   Connect the GPS RX (receive) pin to matching TX1, TX2 or TX3

// If using software serial, keep these lines enabled
// (you can change the pin numbers to match your wiring):
#if ARDUINO >= 100
  SoftwareSerial mySerial(8, 7);
#else
  NewSoftSerial mySerial(8, 7);
#endif
Adafruit_GPS GPS(&mySerial);
// If using hardware serial (e.g. Arduino Mega), comment
// out the above six lines and enable this line instead:
//Adafruit_GPS GPS(&Serial1);


// Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console
// Set to 'true' if you want to debug and listen to the raw GPS sentences
#define GPSECHO  false

// this keeps track of whether we're using the interrupt
// off by default!
boolean usingInterrupt = false;
void useInterrupt(boolean); // Func prototype keeps Arduino 0023 happy

void setup() 
{
   
  // connect at 115200 so we can read the GPS fast enough and echo without dropping chars
  // also spit it out
  Serial.begin(115200);
  Serial.println("Adafruit GPS library basic test!");

  // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800
  GPS.begin(9600);
 
  // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
  // uncomment this line to turn on only the "minimum recommended" data
  //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);
  // For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since
  // the parser doesn't care about other sentences at this time
 
  // Set the update rate
  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);   // 1 Hz update rate
  // For the parsing code to work nicely and have time to sort thru the data, and
  // print it out we don't suggest using anything higher than 1 Hz

  // the nice thing about this code is you can have a timer0 interrupt go off
  // every 1 millisecond, and read data from the GPS for you. that makes the
  // loop code a heck of a lot easier!
  useInterrupt(true);

  delay(1000);
  // Ask for firmware version
  mySerial.println(PMTK_Q_RELEASE);
}


// Interrupt is called once a millisecond, looks for any new GPS data, and stores it
SIGNAL(TIMER0_COMPA_vect) {
  char c = GPS.read();
  // if you want to debug, this is a good time to do it!
  if (GPSECHO)
    if (c) UDR0 = c; 
    // writing direct to UDR0 is much much faster than Serial.print
    // but only one character can be written at a time.
}

void useInterrupt(boolean v) {
  if (v) {
    // Timer0 is already used for millis() - we'll just interrupt somewhere
    // in the middle and call the "Compare A" function above
    OCR0A = 0xAF;
    TIMSK0 |= _BV(OCIE0A);
    usingInterrupt = true;
  } else {
    // do not call the interrupt function COMPA anymore
    TIMSK0 &= ~_BV(OCIE0A);
    usingInterrupt = false;
  }
}

uint32_t timer = millis();
void loop()                     // run over and over again
{
  // in case you are not using the interrupt above, you'll
  // need to 'hand query' the GPS, not suggested :(
  if (! usingInterrupt) {
    // read data from the GPS in the 'main loop'
    char c = GPS.read();
    // if you want to debug, this is a good time to do it!
    if (GPSECHO)
      if (c) UDR0 = c;
      // writing direct to UDR0 is much much faster than Serial.print
      // but only one character can be written at a time.
  }
 
  // if a sentence is received, we can check the checksum, parse it...
  if (GPS.newNMEAreceived()) {
    // a tricky thing here is if we print the NMEA sentence, or data
    // we end up not listening and catching other sentences!
    // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
    //Serial.println(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
 
    GPS.parse(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
 
    fourdigitTime = ((GPS.hour) *100)+ GPS.minute;
    matrix.print(fourdigitTime);
    matrix.drawColon(true);
    matrix.writeDisplay();
    Serial.print("fourdigitTime: "); Serial.println(fourdigitTime);

  }

  // if millis() or timer wraps around, we'll just reset it
  if (timer > millis())  timer = millis();

  // approximately every 2 seconds or so, print out the current stats
  if (millis() - timer > 2000) {
    timer = millis(); // reset the timer
   
    Serial.print("\nTime: ");
    Serial.print(GPS.hour, DEC); Serial.print(':');
    Serial.print(GPS.minute, DEC); Serial.print(':');
    Serial.print(GPS.seconds, DEC); Serial.print('.');
    Serial.println(GPS.milliseconds);
  }
}
jdoscher
 
Posts: 91
Joined: Tue Jul 22, 2008 12:36 pm

Re: Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by adafruit_support_rick on Thu Dec 13, 2012 8:28 pm

jdoscher wrote:I get this from running my revised code below:

CODE: SELECT ALL
Time: 0:1:17.97
fourdigitTime: 1
fourdigitTime: 1
fourdigitTime: 1
fourdigitTime: 1
fourdigitTime: 1
fourdigitTime: 1


Well, that's the expected result when the time is 00:01. So that appears to be working.

I don't see where you're calling matrix.begin(0x70), as is done in the sevenseg example. That could explain why nothing is showing up on the matrix.

adafruit_support_rick
 
Posts: 13723
Joined: Tue Mar 15, 2011 11:42 am
Location: Buffalo, NY

Re: Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by jdoscher on Thu Dec 13, 2012 8:46 pm

Good catch! Thank you! That did the trick. I also did some quick adjustments for PDT, and I thought I would share the code here to close it out. This should be fun for show and tell Saturday.

Code: Select all | TOGGLE FULL SIZE
// Test code for Adafruit GPS modules using MTK3329/MTK3339 driver
//
// This code shows how to listen to the GPS module in an interrupt
// which allows the program to have more 'freedom' - just parse
// when a new NMEA sentence is available! Then access data when
// desired.
//
// Tested and works great with the Adafruit Ultimate GPS module
// using MTK33x9 chipset
//    ------> http://www.adafruit.com/products/746
// Pick one up today at the Adafruit electronics shop
// and help support open source hardware & software! -ada
#include <Wire.h>
#include "Adafruit_LEDBackpack.h"
#include <Adafruit_GPS.h>
#if ARDUINO >= 100
 #include <SoftwareSerial.h>
#else
  // Older Arduino IDE requires NewSoftSerial, download from:
  // http://arduiniana.org/libraries/newsoftserial/
 #include <NewSoftSerial.h>
 // DO NOT install NewSoftSerial if using Arduino 1.0 or later!
#endif

int fourdigitTime;
Adafruit_7segment matrix = Adafruit_7segment();
// Connect the GPS Power pin to 5V
// Connect the GPS Ground pin to ground
// If using software serial (sketch example default):
//   Connect the GPS TX (transmit) pin to Digital 3
//   Connect the GPS RX (receive) pin to Digital 2
// If using hardware serial (e.g. Arduino Mega):
//   Connect the GPS TX (transmit) pin to Arduino RX1, RX2 or RX3
//   Connect the GPS RX (receive) pin to matching TX1, TX2 or TX3

// If using software serial, keep these lines enabled
// (you can change the pin numbers to match your wiring):
#if ARDUINO >= 100
  SoftwareSerial mySerial(8, 7);
#else
  NewSoftSerial mySerial(8, 7);
#endif
Adafruit_GPS GPS(&mySerial);
// If using hardware serial (e.g. Arduino Mega), comment
// out the above six lines and enable this line instead:
//Adafruit_GPS GPS(&Serial1);


// Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console
// Set to 'true' if you want to debug and listen to the raw GPS sentences
#define GPSECHO  false

// this keeps track of whether we're using the interrupt
// off by default!
boolean usingInterrupt = false;
void useInterrupt(boolean); // Func prototype keeps Arduino 0023 happy

void setup() 
{
   matrix.begin(0x70);
  // connect at 115200 so we can read the GPS fast enough and echo without dropping chars
  // also spit it out
  Serial.begin(115200);
  Serial.println("Adafruit GPS library basic test!");

  // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800
  GPS.begin(9600);
 
  // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
  // uncomment this line to turn on only the "minimum recommended" data
  //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);
  // For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since
  // the parser doesn't care about other sentences at this time
 
  // Set the update rate
  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);   // 1 Hz update rate
  // For the parsing code to work nicely and have time to sort thru the data, and
  // print it out we don't suggest using anything higher than 1 Hz

  // the nice thing about this code is you can have a timer0 interrupt go off
  // every 1 millisecond, and read data from the GPS for you. that makes the
  // loop code a heck of a lot easier!
  useInterrupt(true);

  delay(1000);
  // Ask for firmware version
  mySerial.println(PMTK_Q_RELEASE);
}


// Interrupt is called once a millisecond, looks for any new GPS data, and stores it
SIGNAL(TIMER0_COMPA_vect) {
  char c = GPS.read();
  // if you want to debug, this is a good time to do it!
  if (GPSECHO)
    if (c) UDR0 = c; 
    // writing direct to UDR0 is much much faster than Serial.print
    // but only one character can be written at a time.
}

void useInterrupt(boolean v) {
  if (v) {
    // Timer0 is already used for millis() - we'll just interrupt somewhere
    // in the middle and call the "Compare A" function above
    OCR0A = 0xAF;
    TIMSK0 |= _BV(OCIE0A);
    usingInterrupt = true;
  } else {
    // do not call the interrupt function COMPA anymore
    TIMSK0 &= ~_BV(OCIE0A);
    usingInterrupt = false;
  }
}

uint32_t timer = millis();
void loop()                     // run over and over again
{
  // in case you are not using the interrupt above, you'll
  // need to 'hand query' the GPS, not suggested :(
  if (! usingInterrupt) {
    // read data from the GPS in the 'main loop'
    char c = GPS.read();
    // if you want to debug, this is a good time to do it!
    if (GPSECHO)
      if (c) UDR0 = c;
      // writing direct to UDR0 is much much faster than Serial.print
      // but only one character can be written at a time.
  }
 
  // if a sentence is received, we can check the checksum, parse it...
  if (GPS.newNMEAreceived()) {
    // a tricky thing here is if we print the NMEA sentence, or data
    // we end up not listening and catching other sentences!
    // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
    //Serial.println(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
 
    GPS.parse(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
 if (GPS.hour <= 8) {
       fourdigitTime = ((GPS.hour + 4) *100)+ GPS.minute;
 } else if ((GPS.hour > 8) && (GPS.hour <= 20)) {
       fourdigitTime = ((GPS.hour - 8) *100)+ GPS.minute;   
 } else if (GPS.hour > 20) {
        fourdigitTime = ((GPS.hour - 20) *100)+ GPS.minute;   
 }
    matrix.print(fourdigitTime);
    matrix.drawColon(true);
    matrix.writeDisplay();
    Serial.print("fourdigitTime: "); Serial.println(fourdigitTime);

  }

  // if millis() or timer wraps around, we'll just reset it
  if (timer > millis())  timer = millis();

  // approximately every 2 seconds or so, print out the current stats
  if (millis() - timer > 2000) {
    timer = millis(); // reset the timer
   
    Serial.print("\nTime: ");
    Serial.print(GPS.hour, DEC); Serial.print(':');
    Serial.print(GPS.minute, DEC); Serial.print(':');
    Serial.print(GPS.seconds, DEC); Serial.print('.');
    Serial.println(GPS.milliseconds);
  }
}
jdoscher
 
Posts: 91
Joined: Tue Jul 22, 2008 12:36 pm

Re: Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by adafruit_support_rick on Thu Dec 13, 2012 9:21 pm

Cool. Good work!

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Posts: 13723
Joined: Tue Mar 15, 2011 11:42 am
Location: Buffalo, NY

Re: Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by jdoscher on Thu Dec 13, 2012 10:26 pm

I've posted it on Github as well. Adafruit folks please let me know if I need to adjust the attribution or files to comply with your licensing of the libraries, since it uses mostly your code.

https://github.com/polyideas/GPSClock
jdoscher
 
Posts: 91
Joined: Tue Jul 22, 2008 12:36 pm

Re: Arduino UNO, I2C 4 digit backpack & GPS breakout woes

by adafruit_support_rick on Fri Dec 14, 2012 11:12 am


adafruit_support_rick
 
Posts: 13723
Joined: Tue Mar 15, 2011 11:42 am
Location: Buffalo, NY