Hello,
I am trying to create a GPS speedometer with only leds.
I have follow this tutorial GPS speedometer
I have changed the code a bit because i don't have a LCD screen, and i only want to have leds.
I have connected everything the same as the tutorial.
The GPS power led is turn ON (RED), and the PPS led is blining GREEN.
But all the leds not seens to work.
The only thing that not the same that is the GPS module, I have the : VK2828U7G5L, Maybe that is the problem?
I have also check this part of the scripts :
if (millis() > 5000 && gps.charsProcessed() < 10)
{
Serial.println(F("No GPS detected: check wiring."));
}
I did not get any input so that means the GPS module is detected anyway?
This is the original code :
#include "U8glib.h"
U8GLIB_SSD1351_128X128_332 u8g(13, 11, 8, 9, 7); // Arduino UNO: SW SPI Com: SCK = 13, MOSI = 11, CS = 8, DC = 9, RESET = 7
#define u8g_logo_sat_width 20
#define u8g_logo_sat_height 20
//satellite logo
const unsigned char u8g_logo_sat[] = {
0x00, 0x01, 0x00, 0x80, 0x07, 0x00, 0xc0, 0x06, 0x00, 0x60, 0x30, 0x00,
0x60, 0x78, 0x00, 0xc0, 0xfc, 0x00, 0x00, 0xfe, 0x01, 0x00, 0xff, 0x01,
0x80, 0xff, 0x00, 0xc0, 0x7f, 0x06, 0xc0, 0x3f, 0x06, 0x80, 0x1f, 0x0c,
0x80, 0x4f, 0x06, 0x19, 0xc6, 0x03, 0x1b, 0x80, 0x01, 0x73, 0x00, 0x00,
0x66, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x70, 0x00, 0x00
};
// The serial connection to the GPS device
#include <SoftwareSerial.h>
static const int RXPin = 10, TXPin = 15;
static const uint32_t GPSBaud = 9600;
SoftwareSerial ss(RXPin, TXPin);
//GPS Library
#include <TinyGPS++.h>
TinyGPSPlus gps;
//Program variables
double Lat;
double Long;
//int day, month, year;
//int hour, minute, second;
int num_sat, gps_speed;
String heading;
const int ledCount = 10; // the number of LEDs in the bar graph
int ledPins[] = {
2, 3, 4, 5, 6, 14, A5, A4, A3, A2
}; // an array of pin numbers to which LEDs are attached
void setup() {
ss.begin(GPSBaud);
// assign default color value
if ( u8g.getMode() == U8G_MODE_R3G3B2 ) {
u8g.setColorIndex(255); // white
}
//Define ledpins as OUTPUT's
for (int thisLed = 0; thisLed < ledCount; thisLed++) {
pinMode(ledPins[thisLed], OUTPUT);
}
}
void loop() {
Get_GPS(); //Get GPS data
Led_Bar();//Adjust the LED bar
//Display info in the OLED
u8g.firstPage();
do {
print_speed();
} while ( u8g.nextPage() );
}
void print_speed() {
u8g.setFont(u8g_font_helvR24r);
u8g.setPrintPos(2, 70);
u8g.print(gps_speed , DEC);
u8g.setPrintPos(60, 70);
u8g.print("km/h");
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(85, 15);
u8g.print( num_sat, 5);
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(15, 100);
u8g.print("Lat:");
u8g.setPrintPos(50, 100);
u8g.print( Lat, 6);
u8g.setPrintPos(10, 120);
u8g.print("Long:");
u8g.setPrintPos(50, 120);
u8g.print( Long, 6);
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(0, 15);
u8g.print( heading);
u8g.drawXBM(108, 0, u8g_logo_sat_width, u8g_logo_sat_height, u8g_logo_sat);
}
// This custom version of delay() ensures that the gps object
// is being "fed".
static void smartDelay(unsigned long ms)
{
unsigned long start = millis();
do
{
while (ss.available())
gps.encode(ss.read());
} while (millis() - start < ms);
}
void Get_GPS()
{
num_sat = gps.satellites.value();
if (gps.location.isValid() == 1) {
Lat = gps.location.lat();
Long = gps.location.lng();
gps_speed = gps.speed.kmph();
heading = gps.cardinal(gps.course.value());
}
/*
if (gps.date.isValid())
{
day = gps.date.day();
month = gps.date.month();
year = gps.date.year();
}
if (gps.time.isValid())
{
hour = gps.time.hour();
minute = gps.time.minute();
second = gps.time.second();
}
*/
smartDelay(1000);
if (millis() > 5000 && gps.charsProcessed() < 10)
{
// Serial.println(F("No GPS detected: check wiring."));
}
}
void Led_Bar()
{
int ledLevel = map(gps_speed, 0, 190, 0, ledCount);
for (int thisLed = 0; thisLed < ledCount; thisLed++) {
// if the array element's index is less than ledLevel,
// turn the pin for this element on:
if (thisLed < ledLevel) {
digitalWrite(ledPins[thisLed], HIGH);
} else { // turn off all pins higher than the ledLevel:
digitalWrite(ledPins[thisLed], LOW);
}
}
}
And i have changed to this :
// The serial connection to the GPS device
#include <SoftwareSerial.h>
static const int RXPin = 10, TXPin = 15;
static const uint32_t GPSBaud = 9600;
SoftwareSerial ss(RXPin, TXPin);
//GPS Library
#include <TinyGPS++.h>
TinyGPSPlus gps;
//Program variables
double Lat;
double Long;
//int day, month, year;
//int hour, minute, second;
int num_sat, gps_speed;
String heading;
const int ledCount = 10; // the number of LEDs in the bar graph
int ledPins[] = {
2, 3, 4, 5, 6, 14, A5, A4, A3, A2
}; // an array of pin numbers to which LEDs are attached
void setup() {
//ss.begin(GPSBaud);
//Define ledpins as OUTPUT's
for (int thisLed = 0; thisLed < ledCount; thisLed++) {
pinMode(ledPins[thisLed], OUTPUT);
}
}
void loop() {
Get_GPS(); //Get GPS data
Led_Bar();//Adjust the LED bar
//Display info in the OLED
}
// This custom version of delay() ensures that the gps object
// is being "fed".
static void smartDelay(unsigned long ms)
{
unsigned long start = millis();
do
{
while (ss.available())
gps.encode(ss.read());
} while (millis() - start < ms);
}
void Get_GPS()
{
num_sat = gps.satellites.value();
if (gps.location.isValid() == 1) {
Lat = gps.location.lat();
Long = gps.location.lng();
gps_speed = gps.speed.kmph();
heading = gps.cardinal(gps.course.value());
}
/*
if (gps.date.isValid())
{
day = gps.date.day();
month = gps.date.month();
year = gps.date.year();
}
if (gps.time.isValid())
{
hour = gps.time.hour();
minute = gps.time.minute();
second = gps.time.second();
}
*/
smartDelay(1000);
if (millis() > 5000 && gps.charsProcessed() < 10)
{
Serial.println(F("No GPS detected: check wiring."));
}
}
void Led_Bar()
{
int ledLevel = map(gps_speed, 0, 190, 0, ledCount);
for (int thisLed = 0; thisLed < ledCount; thisLed++) {
// if the array element's index is less than ledLevel,
// turn the pin for this element on:
if (thisLed < ledLevel) {
digitalWrite(ledPins[thisLed], HIGH);
} else { // turn off all pins higher than the ledLevel:
digitalWrite(ledPins[thisLed], LOW);
}
}
}
I hope anyone can help me out thanks.
