GPS Data Logger, Real-Time Curve, Max Height and Max Speed

This project describes how to build a GPS data logger at a lower cost.

Dec 30, 2019

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Components and supplies

1.8" TFT SPI LCD Screen with MicroSD Socket

Arduino Proto Shield

gps neo 6m

Jumper (Busbar), Jumper Leads Set

Arduino UNO

Tools and machines

Solder Wire, Lead Free

Wire Stripper & Cutter, 18-10 AWG / 0.75-4mm² Capacity Wires

Soldering iron (generic)

Project description

Code

sauvegarde SD

arduino

data logger

1#include <SPI.h>
2#include<SD.h>
3#include <Adafruit_GFX.h>
4#include   <Adafruit_ST7735.h> 
5#define cs   10
6#define dc   9
7#define rst  8 
8#include   <TinyGPS++.h>
9#include <SoftwareSerial.h>
10Adafruit_ST7735 tft = Adafruit_ST7735(cs,   dc, rst);
11static const int RXPin = 4, TXPin = 3; //GPS communication
12static   const uint32_t GPSBaud = 9600;
13const int cs_sd=4;
14#define OLED_RESET 5
15
16
17
18TinyGPSPlus   gps;
19SoftwareSerial ss(RXPin, TXPin);
20
21int x=80;
22int xh=80;
23int maxhigh=0;
24int   maxspeed = 0, speed1 = 0;
25int high1 = 0;;
26
27
28void setup()
29{
30
31   Serial.begin(9600);
32  ss.begin(GPSBaud);
33  tft.initR(INITR_GREENTAB);
34   tft.fillScreen(ST7735_BLACK);
35  tft.setCursor(5, 58);
36  tft.setTextSize(1);
37       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
38      tft.print("initilisation");
39       tft.setCursor(5, 70);
40  tft.print("init SD");
41  delay(1000);
42  if(!SD.begin(cs_sd))     //Condition vrifiant si la carte SD est prsente dans l'appareil
43  {
44    tft.setCursor(5,   82);
45    tft.print("Defaut SD");
46    return;
47  }
48  tft.setCursor(5,   82);
49  tft.print("Carte SD OK");
50
51  delay(1000);
52  tft.fillScreen(ST7735_BLACK);
53   
54  File data = SD.open("donnees.txt",FILE_WRITE);              // Ouvre le   fichier "donnees.txt"
55  data.println(""); data.println("Dmarrage acquisition");     // Ecrit dans ce fichier
56  data.close(); 
57
58  
59
60}
61
62void   loop()
63{
64  
65	  tft.setTextSize(1);
66  tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
67
68   // affichage des informations a chaque bonne reception satellite
69  while (ss.available()   > 0){
70    gps.encode(ss.read());
71    if (gps.location.isUpdated()){
72     
73     cadre();
74      
75
76      
77       
78       
79       tft.setCursor(5,   44);
80       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
81      tft.print("Latitude   :");
82      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
83      tft.print(gps.location.lat(),   6);
84       tft.setCursor(5, 58);
85       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
86       tft.print("Longitude :");
87      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
88       tft.print(gps.location.lng(), 6);
89
90      
91      
92      
93
94       
95
96       //affichage ecran date 
97      tft.setCursor(5, 7);
98      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
99       tft.print("date : ");
100      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
101       tft.print(gps.date.day());
102      tft.print(" ");
103      tft.print(gps.date.month());
104       tft.print(" ");
105      tft.print(gps.date.year());
106
107      String   Date=String(gps.date.day())+(" ")+(gps.date.month())+(" ")+(gps.date.year());
108       
109
110      //affichage ecran heure
111      tft.setCursor(5, 20);
112       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
113       tft.print("heure : ");
114      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
115       tft.print(gps.time.hour()+1);
116      tft.print(" ");
117      tft.print(gps.time.minute());
118       tft.print(" ");
119      tft.print(gps.time.second());
120      tft.print("   ");
121       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
122        tft.setCursor(3,   30);
123       
124       String Temps=String(gps.time.hour()+1)+(" ")+(gps.time.minute())+("   ")+(gps.time.second());
125      
126      
127
128       //affichage ecran altitude
129       tft.setCursor(5, 80);
130      tft.print("H  m :");
131      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
132       tft.print (gps.altitude.meters(),0);
133      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
134       tft.print("   ");
135      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
136       tft.setCursor(5, 95);
137      hmax();
138      tft.print("Hmax :");
139       tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
140      tft.print(maxhigh);
141       tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
142      tft.print("   ");
143       courbeh();
144       
145
146      //affichage ecran vitesse 
147       tft.setCursor(5,   115);
148       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
149      tft.print("V   act: ");
150      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
151      tft.print   (gps.speed.kmph(),0);
152      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
153      tft.print("    ");
154      tft.setCursor(5, 130);
155      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
156       vmax();
157      tft.print("vmax: ");
158      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
159       tft.print(maxspeed);
160      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
161       tft.print("   ");
162      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
163       courbe();
164      
165      
166
167      
168       //affichage ecran nombre   de satellites
169      tft.setCursor(5, 147);
170      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
171       tft.print("nombre de Sat  : ");
172      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
173       tft.print(gps.satellites.value());
174      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
175       tft.print("  ");
176      
177      // Horizontal Dim. of Precision (100ths-i32)
178       Serial.print("HDOP = "); 
179      Serial.println(gps.hdop.value());
180        
181      
182      
183   
184
185  
186  
187  smartDelay(400);
188
189   // Ecriture des donnes dans le fichier texte
190  File data=SD.open("donnees.txt",FILE_WRITE);
191   data.println(Date + " " + Temps + " " + String(gps.location.lat(), 6)+" "+String(gps.location.lng(),   6)+(" ")+String(gps.altitude.meters(),0)+(" ")+String(maxhigh)+(" ")+String(gps.speed.kmph(),0)+("   ")+String(maxspeed)); 
192  data.close();
193  
194}
195  }
196}
197// delai pour   une bonne recption
198static void smartDelay(unsigned long ms)
199{
200  unsigned   long start = millis();
201  do
202  {
203    while (ss.available())
204      gps.encode(ss.read());
205   } while (millis() - start < ms);
206}
207void cadre() {
208  // affichage ecran
209        //cadre
210       tft.drawLine(0,0,130,0,ST7735_RED);
211       tft.drawLine(0,1,130,1,ST7735_RED);
212        tft.drawLine(0,158,130,158,ST7735_RED);
213       tft.drawLine(0,142,130,142,ST7735_RED);
214        tft.drawLine(0,141,130,141,ST7735_RED);
215       tft.drawLine(0,107,130,107,ST7735_RED);
216        tft.drawLine(0,108,130,108,ST7735_RED);
217       
218       tft.drawLine(80,108,80,140,ST7735_RED);
219        tft.drawLine(81,109,81,140,ST7735_RED);
220       
221       tft.drawLine(80,70,80,108,ST7735_RED);
222        tft.drawLine(81,70,81,108,ST7735_RED);
223       
224       tft.drawLine(0,159,130,159,ST7735_RED);
225         tft.drawLine(0,0,0,156,ST7735_RED);
226       tft.drawLine(1,1,1,157,ST7735_RED);
227        tft.drawLine(127,0,127,156,ST7735_RED);
228       tft.drawLine(126,0,126,156,ST7735_RED);
229        tft.drawLine(0,35,130,35,ST7735_RED);
230       tft.drawLine(0,36,130,36,ST7735_RED);
231        tft.drawLine(0,70,130,70,ST7735_RED);
232       tft.drawLine(0,71,130,71,ST7735_RED);
233        
234}
235
236void courbe() {
237
238
239  int nouvelleValeur;
240
241  //   converison vitesse max (350 km/h) en pixel
242  nouvelleValeur = map((gps.speed.kmph()),   0, 150, 137, 110); // car l'cran a 64 pixels de haut
243  
244  
245  x++;
246 
247   tft.drawPixel(x,nouvelleValeur,ST7735_CYAN);
248  if (x>123) {
249    x=80;
250     tft.fillRect(82,110,43,30,ST7735_BLACK);
251    
252  }
253}
254void courbeh()   {
255
256
257  int nouvelleValeurh;
258
259  // converison vitesse max (350 km/h)   en pixel
260  nouvelleValeurh = map((gps.altitude.meters()), 0, 1000, 104, 72);   // car l'cran a 64 pixels de haut
261  
262  
263  xh++;
264  
265  tft.drawPixel(xh,nouvelleValeurh,ST7735_CYAN);
266   if (xh>123) {
267    xh=80;
268    tft.fillRect(82,72,43,35,ST7735_BLACK);
269     
270  }
271}
272void vmax() {
273// calcul vitese maximum 
274      speed1 =   (gps.speed.kmph());
275         if ( speed1 > maxspeed) {
276         maxspeed =   speed1;
277      }
278  }
279   void hmax() {
280//      calcul altitude maximum   
281      high1 = (gps.altitude.meters());
282          if ( high1 > maxhigh) {
283         maxhigh = high1;
284      }
285   }
286

#include <SPI.h>
#include<SD.h>
#include <Adafruit_GFX.h>
#include   <Adafruit_ST7735.h> 
#define cs   10
#define dc   9
#define rst  8 
#include   <TinyGPS++.h>
#include <SoftwareSerial.h>
Adafruit_ST7735 tft = Adafruit_ST7735(cs,   dc, rst);
static const int RXPin = 4, TXPin = 3; //GPS communication
static   const uint32_t GPSBaud = 9600;
const int cs_sd=4;
#define OLED_RESET 5



TinyGPSPlus   gps;
SoftwareSerial ss(RXPin, TXPin);

int x=80;
int xh=80;
int maxhigh=0;
int   maxspeed = 0, speed1 = 0;
int high1 = 0;;


void setup()
{

   Serial.begin(9600);
  ss.begin(GPSBaud);
  tft.initR(INITR_GREENTAB);
   tft.fillScreen(ST7735_BLACK);
  tft.setCursor(5, 58);
  tft.setTextSize(1);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("initilisation");
       tft.setCursor(5, 70);
  tft.print("init SD");
  delay(1000);
  if(!SD.begin(cs_sd))     //Condition vrifiant si la carte SD est prsente dans l'appareil
  {
    tft.setCursor(5,   82);
    tft.print("Defaut SD");
    return;
  }
  tft.setCursor(5,   82);
  tft.print("Carte SD OK");

  delay(1000);
  tft.fillScreen(ST7735_BLACK);
   
  File data = SD.open("donnees.txt",FILE_WRITE);              // Ouvre le   fichier "donnees.txt"
  data.println(""); data.println("Dmarrage acquisition");     // Ecrit dans ce fichier
  data.close(); 

  

}

void   loop()
{
  
	  tft.setTextSize(1);
  tft.setTextColor(ST7735_GREEN,ST7735_BLACK);

   // affichage des informations a chaque bonne reception satellite
  while (ss.available()   > 0){
    gps.encode(ss.read());
    if (gps.location.isUpdated()){
     
     cadre();
      

      
       
       
       tft.setCursor(5,   44);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("Latitude   :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.location.lat(),   6);
       tft.setCursor(5, 58);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
       tft.print("Longitude :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print(gps.location.lng(), 6);

      
      
      

       

       //affichage ecran date 
      tft.setCursor(5, 7);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
       tft.print("date : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print(gps.date.day());
      tft.print(" ");
      tft.print(gps.date.month());
       tft.print(" ");
      tft.print(gps.date.year());

      String   Date=String(gps.date.day())+(" ")+(gps.date.month())+(" ")+(gps.date.year());
       

      //affichage ecran heure
      tft.setCursor(5, 20);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
       tft.print("heure : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print(gps.time.hour()+1);
      tft.print(" ");
      tft.print(gps.time.minute());
       tft.print(" ");
      tft.print(gps.time.second());
      tft.print("   ");
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
        tft.setCursor(3,   30);
       
       String Temps=String(gps.time.hour()+1)+(" ")+(gps.time.minute())+("   ")+(gps.time.second());
      
      

       //affichage ecran altitude
       tft.setCursor(5, 80);
      tft.print("H  m :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print (gps.altitude.meters(),0);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print("   ");
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
       tft.setCursor(5, 95);
      hmax();
      tft.print("Hmax :");
       tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(maxhigh);
       tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
       courbeh();
       

      //affichage ecran vitesse 
       tft.setCursor(5,   115);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("V   act: ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print   (gps.speed.kmph(),0);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("    ");
      tft.setCursor(5, 130);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
       vmax();
      tft.print("vmax: ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print(maxspeed);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print("   ");
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
       courbe();
      
      

      
       //affichage ecran nombre   de satellites
      tft.setCursor(5, 147);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
       tft.print("nombre de Sat  : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print(gps.satellites.value());
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
       tft.print("  ");
      
      // Horizontal Dim. of Precision (100ths-i32)
       Serial.print("HDOP = "); 
      Serial.println(gps.hdop.value());
        
      
      
   

  
  
  smartDelay(400);

   // Ecriture des donnes dans le fichier texte
  File data=SD.open("donnees.txt",FILE_WRITE);
   data.println(Date + " " + Temps + " " + String(gps.location.lat(), 6)+" "+String(gps.location.lng(),   6)+(" ")+String(gps.altitude.meters(),0)+(" ")+String(maxhigh)+(" ")+String(gps.speed.kmph(),0)+("   ")+String(maxspeed)); 
  data.close();
  
}
  }
}
// delai pour   une bonne recption
static void smartDelay(unsigned long ms)
{
  unsigned   long start = millis();
  do
  {
    while (ss.available())
      gps.encode(ss.read());
   } while (millis() - start < ms);
}
void cadre() {
  // affichage ecran
        //cadre
       tft.drawLine(0,0,130,0,ST7735_RED);
       tft.drawLine(0,1,130,1,ST7735_RED);
        tft.drawLine(0,158,130,158,ST7735_RED);
       tft.drawLine(0,142,130,142,ST7735_RED);
        tft.drawLine(0,141,130,141,ST7735_RED);
       tft.drawLine(0,107,130,107,ST7735_RED);
        tft.drawLine(0,108,130,108,ST7735_RED);
       
       tft.drawLine(80,108,80,140,ST7735_RED);
        tft.drawLine(81,109,81,140,ST7735_RED);
       
       tft.drawLine(80,70,80,108,ST7735_RED);
        tft.drawLine(81,70,81,108,ST7735_RED);
       
       tft.drawLine(0,159,130,159,ST7735_RED);
         tft.drawLine(0,0,0,156,ST7735_RED);
       tft.drawLine(1,1,1,157,ST7735_RED);
        tft.drawLine(127,0,127,156,ST7735_RED);
       tft.drawLine(126,0,126,156,ST7735_RED);
        tft.drawLine(0,35,130,35,ST7735_RED);
       tft.drawLine(0,36,130,36,ST7735_RED);
        tft.drawLine(0,70,130,70,ST7735_RED);
       tft.drawLine(0,71,130,71,ST7735_RED);
        
}

void courbe() {


  int nouvelleValeur;

  //   converison vitesse max (350 km/h) en pixel
  nouvelleValeur = map((gps.speed.kmph()),   0, 150, 137, 110); // car l'cran a 64 pixels de haut
  
  
  x++;
 
   tft.drawPixel(x,nouvelleValeur,ST7735_CYAN);
  if (x>123) {
    x=80;
     tft.fillRect(82,110,43,30,ST7735_BLACK);
    
  }
}
void courbeh()   {


  int nouvelleValeurh;

  // converison vitesse max (350 km/h)   en pixel
  nouvelleValeurh = map((gps.altitude.meters()), 0, 1000, 104, 72);   // car l'cran a 64 pixels de haut
  
  
  xh++;
  
  tft.drawPixel(xh,nouvelleValeurh,ST7735_CYAN);
   if (xh>123) {
    xh=80;
    tft.fillRect(82,72,43,35,ST7735_BLACK);
     
  }
}
void vmax() {
// calcul vitese maximum 
      speed1 =   (gps.speed.kmph());
         if ( speed1 > maxspeed) {
         maxspeed =   speed1;
      }
  }
   void hmax() {
//      calcul altitude maximum   
      high1 = (gps.altitude.meters());
          if ( high1 > maxhigh) {
         maxhigh = high1;
      }
   }

gps data logger

arduino

1#include <SPI.h>
2#include <Adafruit_GFX.h>
3#include <Adafruit_ST7735.h>  
4#define cs   10
5#define dc   9
6#define rst  8 
7#include <TinyGPS++.h>
8#include  <SoftwareSerial.h>
9Adafruit_ST7735 tft = Adafruit_ST7735(cs, dc, rst);
10static  const int RXPin = 4, TXPin = 3; //GPS communication
11static const uint32_t GPSBaud  = 9600;
12
13#define OLED_RESET 5
14
15
16
17TinyGPSPlus gps;
18SoftwareSerial  ss(RXPin, TXPin);
19
20int x=80;
21int xh=80;
22int maxhigh=0;
23int maxspeed  = 0, speed1 = 0;
24int high1 = 0;;
25
26
27void setup()
28{
29
30 Serial.begin(9600);
31  ss.begin(GPSBaud);
32
33  tft.initR(INITR_GREENTAB);
34  tft.fillScreen(ST7735_BLACK);
35  tft.setCursor(5, 58);
36  tft.setTextSize(1);
37  tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
38      tft.print("initilisation");
39  
40
41  
42
43}
44
45void loop()
46{
47  
48	  tft.setTextSize(1);
49  tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
50
51  // affichage des informations a chaque bonne reception satellite
52  while (ss.available()  > 0){
53    gps.encode(ss.read());
54    if (gps.location.isUpdated()){
55     
56    cadre();
57      
58
59      
60       
61       
62       tft.setCursor(5,  44);
63       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
64      tft.print("Latitude  :");
65      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
66      tft.print(gps.location.lat(),  6);
67       tft.setCursor(5, 58);
68       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
69      tft.print("Longitude :");
70      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
71      tft.print(gps.location.lng(), 6);
72
73      
74      
75      
76
77      
78
79       //affichage ecran date 
80      tft.setCursor(5, 7);
81      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
82      tft.print("date : ");
83      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
84      tft.print(gps.date.day());
85      tft.print(" ");
86      tft.print(gps.date.month());
87      tft.print(" ");
88      tft.print(gps.date.year());
89
90      
91      
92
93      //affichage ecran heure
94      tft.setCursor(5, 20);
95       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
96      tft.print("heure : ");
97      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
98      tft.print(gps.time.hour()+1);
99      tft.print(" ");
100      tft.print(gps.time.minute());
101      tft.print(" ");
102      tft.print(gps.time.second());
103      tft.print("  ");
104       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
105        tft.setCursor(3,  30);
106       
107       
108      
109      
110
111       //affichage ecran altitude
112      tft.setCursor(5, 80);
113      tft.print("H  m :");
114      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
115      tft.print (gps.altitude.meters(),0);
116      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
117      tft.print("   ");
118      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
119      tft.setCursor(5, 95);
120      hmax();
121      tft.print("Hmax :");
122      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
123      tft.print(maxhigh);
124      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
125      tft.print("   ");
126      courbeh();
127       
128
129      //affichage ecran vitesse 
130       tft.setCursor(5,  115);
131       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
132      tft.print("V  act: ");
133      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
134      tft.print  (gps.speed.kmph(),0);
135      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
136      tft.print("   ");
137      tft.setCursor(5, 130);
138      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
139      vmax();
140      tft.print("vmax: ");
141      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
142      tft.print(maxspeed);
143      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
144      tft.print("   ");
145      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
146      courbe();
147      
148      
149
150      
151       //affichage ecran nombre  de satellites
152      tft.setCursor(5, 147);
153      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
154      tft.print("nombre de Sat  : ");
155      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
156      tft.print(gps.satellites.value());
157      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
158      tft.print("   ");
159      
160      // Horizontal Dim. of Precision (100ths-i32)
161      Serial.print("HDOP = "); 
162      Serial.println(gps.hdop.value());
163       
164      
165      
166   
167
168  
169  
170  smartDelay(400);
171
172  
173  
174}
175  }
176}
177// delai pour une bonne recption
178static void smartDelay(unsigned  long ms)
179{
180  unsigned long start = millis();
181  do
182  {
183    while (ss.available())
184      gps.encode(ss.read());
185  } while (millis() - start < ms);
186}
187void  cadre() {
188  // affichage ecran
189       //cadre
190       tft.drawLine(0,0,130,0,ST7735_RED);
191       tft.drawLine(0,1,130,1,ST7735_RED);
192       tft.drawLine(0,158,130,158,ST7735_RED);
193       tft.drawLine(0,142,130,142,ST7735_RED);
194       tft.drawLine(0,141,130,141,ST7735_RED);
195       tft.drawLine(0,107,130,107,ST7735_RED);
196       tft.drawLine(0,108,130,108,ST7735_RED);
197       
198       tft.drawLine(80,108,80,140,ST7735_RED);
199       tft.drawLine(81,109,81,140,ST7735_RED);
200       
201       tft.drawLine(80,70,80,108,ST7735_RED);
202       tft.drawLine(81,70,81,108,ST7735_RED);
203       
204       tft.drawLine(0,159,130,159,ST7735_RED);
205        tft.drawLine(0,0,0,156,ST7735_RED);
206       tft.drawLine(1,1,1,157,ST7735_RED);
207       tft.drawLine(127,0,127,156,ST7735_RED);
208       tft.drawLine(126,0,126,156,ST7735_RED);
209       tft.drawLine(0,35,130,35,ST7735_RED);
210       tft.drawLine(0,36,130,36,ST7735_RED);
211       tft.drawLine(0,70,130,70,ST7735_RED);
212       tft.drawLine(0,71,130,71,ST7735_RED);
213       
214}
215
216void courbe()  {
217
218
219  int nouvelleValeur;
220
221  // converison vitesse max (350 km/h)  en pixel
222  nouvelleValeur = map((gps.speed.kmph()), 0, 150, 137, 110); // car  l'cran a 64 pixels de haut
223  
224  
225  x++;
226 
227  tft.drawPixel(x,nouvelleValeur,ST7735_CYAN);
228  if (x>123) {
229    x=80;
230    tft.fillRect(82,110,43,30,ST7735_BLACK);
231    
232  }
233}
234void courbeh() {
235
236
237  int nouvelleValeurh;
238
239  //  converison vitesse max (350 km/h) en pixel
240  nouvelleValeurh = map((gps.altitude.meters()),  0, 1000, 104, 72); // car l'cran a 64 pixels de haut
241  
242  
243  xh++;
244  
245  tft.drawPixel(xh,nouvelleValeurh,ST7735_CYAN);
246  if (xh>123) {
247    xh=80;
248    tft.fillRect(82,72,43,35,ST7735_BLACK);
249    
250  }
251}
252void vmax() {
253//  calcul vitese maximum 
254      speed1 = (gps.speed.kmph());
255         if ( speed1  > maxspeed) {
256         maxspeed = speed1;
257      }
258  }
259   void hmax()  {
260//      calcul altitude maximum 
261      high1 = (gps.altitude.meters());
262          if ( high1 > maxhigh) {
263        maxhigh = high1;
264      }
265   }
266

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ST7735.h>  
#define cs   10
#define dc   9
#define rst  8 
#include <TinyGPS++.h>
#include  <SoftwareSerial.h>
Adafruit_ST7735 tft = Adafruit_ST7735(cs, dc, rst);
static  const int RXPin = 4, TXPin = 3; //GPS communication
static const uint32_t GPSBaud  = 9600;

#define OLED_RESET 5



TinyGPSPlus gps;
SoftwareSerial  ss(RXPin, TXPin);

int x=80;
int xh=80;
int maxhigh=0;
int maxspeed  = 0, speed1 = 0;
int high1 = 0;;


void setup()
{

 Serial.begin(9600);
  ss.begin(GPSBaud);

  tft.initR(INITR_GREENTAB);
  tft.fillScreen(ST7735_BLACK);
  tft.setCursor(5, 58);
  tft.setTextSize(1);
  tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("initilisation");
  

  

}

void loop()
{
  
	  tft.setTextSize(1);
  tft.setTextColor(ST7735_GREEN,ST7735_BLACK);

  // affichage des informations a chaque bonne reception satellite
  while (ss.available()  > 0){
    gps.encode(ss.read());
    if (gps.location.isUpdated()){
     
    cadre();
      

      
       
       
       tft.setCursor(5,  44);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("Latitude  :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.location.lat(),  6);
       tft.setCursor(5, 58);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("Longitude :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.location.lng(), 6);

      
      
      

      

       //affichage ecran date 
      tft.setCursor(5, 7);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("date : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.date.day());
      tft.print(" ");
      tft.print(gps.date.month());
      tft.print(" ");
      tft.print(gps.date.year());

      
      

      //affichage ecran heure
      tft.setCursor(5, 20);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("heure : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.time.hour()+1);
      tft.print(" ");
      tft.print(gps.time.minute());
      tft.print(" ");
      tft.print(gps.time.second());
      tft.print("  ");
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
        tft.setCursor(3,  30);
       
       
      
      

       //affichage ecran altitude
      tft.setCursor(5, 80);
      tft.print("H  m :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print (gps.altitude.meters(),0);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.setCursor(5, 95);
      hmax();
      tft.print("Hmax :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(maxhigh);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      courbeh();
       

      //affichage ecran vitesse 
       tft.setCursor(5,  115);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("V  act: ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print  (gps.speed.kmph(),0);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      tft.setCursor(5, 130);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      vmax();
      tft.print("vmax: ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(maxspeed);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      courbe();
      
      

      
       //affichage ecran nombre  de satellites
      tft.setCursor(5, 147);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("nombre de Sat  : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.satellites.value());
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      
      // Horizontal Dim. of Precision (100ths-i32)
      Serial.print("HDOP = "); 
      Serial.println(gps.hdop.value());
       
      
      
   

  
  
  smartDelay(400);

  
  
}
  }
}
// delai pour une bonne recption
static void smartDelay(unsigned  long ms)
{
  unsigned long start = millis();
  do
  {
    while (ss.available())
      gps.encode(ss.read());
  } while (millis() - start < ms);
}
void  cadre() {
  // affichage ecran
       //cadre
       tft.drawLine(0,0,130,0,ST7735_RED);
       tft.drawLine(0,1,130,1,ST7735_RED);
       tft.drawLine(0,158,130,158,ST7735_RED);
       tft.drawLine(0,142,130,142,ST7735_RED);
       tft.drawLine(0,141,130,141,ST7735_RED);
       tft.drawLine(0,107,130,107,ST7735_RED);
       tft.drawLine(0,108,130,108,ST7735_RED);
       
       tft.drawLine(80,108,80,140,ST7735_RED);
       tft.drawLine(81,109,81,140,ST7735_RED);
       
       tft.drawLine(80,70,80,108,ST7735_RED);
       tft.drawLine(81,70,81,108,ST7735_RED);
       
       tft.drawLine(0,159,130,159,ST7735_RED);
        tft.drawLine(0,0,0,156,ST7735_RED);
       tft.drawLine(1,1,1,157,ST7735_RED);
       tft.drawLine(127,0,127,156,ST7735_RED);
       tft.drawLine(126,0,126,156,ST7735_RED);
       tft.drawLine(0,35,130,35,ST7735_RED);
       tft.drawLine(0,36,130,36,ST7735_RED);
       tft.drawLine(0,70,130,70,ST7735_RED);
       tft.drawLine(0,71,130,71,ST7735_RED);
       
}

void courbe()  {


  int nouvelleValeur;

  // converison vitesse max (350 km/h)  en pixel
  nouvelleValeur = map((gps.speed.kmph()), 0, 150, 137, 110); // car  l'cran a 64 pixels de haut
  
  
  x++;
 
  tft.drawPixel(x,nouvelleValeur,ST7735_CYAN);
  if (x>123) {
    x=80;
    tft.fillRect(82,110,43,30,ST7735_BLACK);
    
  }
}
void courbeh() {


  int nouvelleValeurh;

  //  converison vitesse max (350 km/h) en pixel
  nouvelleValeurh = map((gps.altitude.meters()),  0, 1000, 104, 72); // car l'cran a 64 pixels de haut
  
  
  xh++;
  
  tft.drawPixel(xh,nouvelleValeurh,ST7735_CYAN);
  if (xh>123) {
    xh=80;
    tft.fillRect(82,72,43,35,ST7735_BLACK);
    
  }
}
void vmax() {
//  calcul vitese maximum 
      speed1 = (gps.speed.kmph());
         if ( speed1  > maxspeed) {
         maxspeed = speed1;
      }
  }
   void hmax()  {
//      calcul altitude maximum 
      high1 = (gps.altitude.meters());
          if ( high1 > maxhigh) {
        maxhigh = high1;
      }
   }

sauvegarde SD

arduino

data logger

1#include <SPI.h>
2#include<SD.h>
3#include <Adafruit_GFX.h>
4#include  <Adafruit_ST7735.h> 
5#define cs   10
6#define dc   9
7#define rst  8 
8#include  <TinyGPS++.h>
9#include <SoftwareSerial.h>
10Adafruit_ST7735 tft = Adafruit_ST7735(cs,  dc, rst);
11static const int RXPin = 4, TXPin = 3; //GPS communication
12static  const uint32_t GPSBaud = 9600;
13const int cs_sd=4;
14#define OLED_RESET 5
15
16
17
18TinyGPSPlus  gps;
19SoftwareSerial ss(RXPin, TXPin);
20
21int x=80;
22int xh=80;
23int maxhigh=0;
24int  maxspeed = 0, speed1 = 0;
25int high1 = 0;;
26
27
28void setup()
29{
30
31  Serial.begin(9600);
32  ss.begin(GPSBaud);
33  tft.initR(INITR_GREENTAB);
34  tft.fillScreen(ST7735_BLACK);
35  tft.setCursor(5, 58);
36  tft.setTextSize(1);
37      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
38      tft.print("initilisation");
39      tft.setCursor(5, 70);
40  tft.print("init SD");
41  delay(1000);
42  if(!SD.begin(cs_sd))    //Condition vrifiant si la carte SD est prsente dans l'appareil
43  {
44    tft.setCursor(5,  82);
45    tft.print("Defaut SD");
46    return;
47  }
48  tft.setCursor(5,  82);
49  tft.print("Carte SD OK");
50
51  delay(1000);
52  tft.fillScreen(ST7735_BLACK);
53  
54  File data = SD.open("donnees.txt",FILE_WRITE);              // Ouvre le  fichier "donnees.txt"
55  data.println(""); data.println("Dmarrage acquisition");    // Ecrit dans ce fichier
56  data.close(); 
57
58  
59
60}
61
62void  loop()
63{
64  
65	  tft.setTextSize(1);
66  tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
67
68  // affichage des informations a chaque bonne reception satellite
69  while (ss.available()  > 0){
70    gps.encode(ss.read());
71    if (gps.location.isUpdated()){
72     
73    cadre();
74      
75
76      
77       
78       
79       tft.setCursor(5,  44);
80       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
81      tft.print("Latitude  :");
82      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
83      tft.print(gps.location.lat(),  6);
84       tft.setCursor(5, 58);
85       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
86      tft.print("Longitude :");
87      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
88      tft.print(gps.location.lng(), 6);
89
90      
91      
92      
93
94      
95
96       //affichage ecran date 
97      tft.setCursor(5, 7);
98      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
99      tft.print("date : ");
100      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
101      tft.print(gps.date.day());
102      tft.print(" ");
103      tft.print(gps.date.month());
104      tft.print(" ");
105      tft.print(gps.date.year());
106
107      String  Date=String(gps.date.day())+(" ")+(gps.date.month())+(" ")+(gps.date.year());
108      
109
110      //affichage ecran heure
111      tft.setCursor(5, 20);
112       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
113      tft.print("heure : ");
114      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
115      tft.print(gps.time.hour()+1);
116      tft.print(" ");
117      tft.print(gps.time.minute());
118      tft.print(" ");
119      tft.print(gps.time.second());
120      tft.print("  ");
121       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
122        tft.setCursor(3,  30);
123       
124       String Temps=String(gps.time.hour()+1)+(" ")+(gps.time.minute())+("  ")+(gps.time.second());
125      
126      
127
128       //affichage ecran altitude
129      tft.setCursor(5, 80);
130      tft.print("H  m :");
131      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
132      tft.print (gps.altitude.meters(),0);
133      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
134      tft.print("   ");
135      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
136      tft.setCursor(5, 95);
137      hmax();
138      tft.print("Hmax :");
139      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
140      tft.print(maxhigh);
141      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
142      tft.print("   ");
143      courbeh();
144       
145
146      //affichage ecran vitesse 
147       tft.setCursor(5,  115);
148       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
149      tft.print("V  act: ");
150      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
151      tft.print  (gps.speed.kmph(),0);
152      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
153      tft.print("   ");
154      tft.setCursor(5, 130);
155      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
156      vmax();
157      tft.print("vmax: ");
158      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
159      tft.print(maxspeed);
160      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
161      tft.print("   ");
162      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
163      courbe();
164      
165      
166
167      
168       //affichage ecran nombre  de satellites
169      tft.setCursor(5, 147);
170      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
171      tft.print("nombre de Sat  : ");
172      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
173      tft.print(gps.satellites.value());
174      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
175      tft.print("  ");
176      
177      // Horizontal Dim. of Precision (100ths-i32)
178      Serial.print("HDOP = "); 
179      Serial.println(gps.hdop.value());
180       
181      
182      
183   
184
185  
186  
187  smartDelay(400);
188
189  // Ecriture des donnes dans le fichier texte
190  File data=SD.open("donnees.txt",FILE_WRITE);
191  data.println(Date + " " + Temps + " " + String(gps.location.lat(), 6)+" "+String(gps.location.lng(),  6)+(" ")+String(gps.altitude.meters(),0)+(" ")+String(maxhigh)+(" ")+String(gps.speed.kmph(),0)+("  ")+String(maxspeed)); 
192  data.close();
193  
194}
195  }
196}
197// delai pour  une bonne recption
198static void smartDelay(unsigned long ms)
199{
200  unsigned  long start = millis();
201  do
202  {
203    while (ss.available())
204      gps.encode(ss.read());
205  } while (millis() - start < ms);
206}
207void cadre() {
208  // affichage ecran
209       //cadre
210       tft.drawLine(0,0,130,0,ST7735_RED);
211       tft.drawLine(0,1,130,1,ST7735_RED);
212       tft.drawLine(0,158,130,158,ST7735_RED);
213       tft.drawLine(0,142,130,142,ST7735_RED);
214       tft.drawLine(0,141,130,141,ST7735_RED);
215       tft.drawLine(0,107,130,107,ST7735_RED);
216       tft.drawLine(0,108,130,108,ST7735_RED);
217       
218       tft.drawLine(80,108,80,140,ST7735_RED);
219       tft.drawLine(81,109,81,140,ST7735_RED);
220       
221       tft.drawLine(80,70,80,108,ST7735_RED);
222       tft.drawLine(81,70,81,108,ST7735_RED);
223       
224       tft.drawLine(0,159,130,159,ST7735_RED);
225        tft.drawLine(0,0,0,156,ST7735_RED);
226       tft.drawLine(1,1,1,157,ST7735_RED);
227       tft.drawLine(127,0,127,156,ST7735_RED);
228       tft.drawLine(126,0,126,156,ST7735_RED);
229       tft.drawLine(0,35,130,35,ST7735_RED);
230       tft.drawLine(0,36,130,36,ST7735_RED);
231       tft.drawLine(0,70,130,70,ST7735_RED);
232       tft.drawLine(0,71,130,71,ST7735_RED);
233       
234}
235
236void courbe() {
237
238
239  int nouvelleValeur;
240
241  //  converison vitesse max (350 km/h) en pixel
242  nouvelleValeur = map((gps.speed.kmph()),  0, 150, 137, 110); // car l'cran a 64 pixels de haut
243  
244  
245  x++;
246 
247  tft.drawPixel(x,nouvelleValeur,ST7735_CYAN);
248  if (x>123) {
249    x=80;
250    tft.fillRect(82,110,43,30,ST7735_BLACK);
251    
252  }
253}
254void courbeh()  {
255
256
257  int nouvelleValeurh;
258
259  // converison vitesse max (350 km/h)  en pixel
260  nouvelleValeurh = map((gps.altitude.meters()), 0, 1000, 104, 72);  // car l'cran a 64 pixels de haut
261  
262  
263  xh++;
264  
265  tft.drawPixel(xh,nouvelleValeurh,ST7735_CYAN);
266  if (xh>123) {
267    xh=80;
268    tft.fillRect(82,72,43,35,ST7735_BLACK);
269    
270  }
271}
272void vmax() {
273// calcul vitese maximum 
274      speed1 =  (gps.speed.kmph());
275         if ( speed1 > maxspeed) {
276         maxspeed =  speed1;
277      }
278  }
279   void hmax() {
280//      calcul altitude maximum  
281      high1 = (gps.altitude.meters());
282          if ( high1 > maxhigh) {
283        maxhigh = high1;
284      }
285   }
286

#include <SPI.h>
#include<SD.h>
#include <Adafruit_GFX.h>
#include  <Adafruit_ST7735.h> 
#define cs   10
#define dc   9
#define rst  8 
#include  <TinyGPS++.h>
#include <SoftwareSerial.h>
Adafruit_ST7735 tft = Adafruit_ST7735(cs,  dc, rst);
static const int RXPin = 4, TXPin = 3; //GPS communication
static  const uint32_t GPSBaud = 9600;
const int cs_sd=4;
#define OLED_RESET 5



TinyGPSPlus  gps;
SoftwareSerial ss(RXPin, TXPin);

int x=80;
int xh=80;
int maxhigh=0;
int  maxspeed = 0, speed1 = 0;
int high1 = 0;;


void setup()
{

  Serial.begin(9600);
  ss.begin(GPSBaud);
  tft.initR(INITR_GREENTAB);
  tft.fillScreen(ST7735_BLACK);
  tft.setCursor(5, 58);
  tft.setTextSize(1);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("initilisation");
      tft.setCursor(5, 70);
  tft.print("init SD");
  delay(1000);
  if(!SD.begin(cs_sd))    //Condition vrifiant si la carte SD est prsente dans l'appareil
  {
    tft.setCursor(5,  82);
    tft.print("Defaut SD");
    return;
  }
  tft.setCursor(5,  82);
  tft.print("Carte SD OK");

  delay(1000);
  tft.fillScreen(ST7735_BLACK);
  
  File data = SD.open("donnees.txt",FILE_WRITE);              // Ouvre le  fichier "donnees.txt"
  data.println(""); data.println("Dmarrage acquisition");    // Ecrit dans ce fichier
  data.close(); 

  

}

void  loop()
{
  
	  tft.setTextSize(1);
  tft.setTextColor(ST7735_GREEN,ST7735_BLACK);

  // affichage des informations a chaque bonne reception satellite
  while (ss.available()  > 0){
    gps.encode(ss.read());
    if (gps.location.isUpdated()){
     
    cadre();
      

      
       
       
       tft.setCursor(5,  44);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("Latitude  :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.location.lat(),  6);
       tft.setCursor(5, 58);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("Longitude :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.location.lng(), 6);

      
      
      

      

       //affichage ecran date 
      tft.setCursor(5, 7);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("date : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.date.day());
      tft.print(" ");
      tft.print(gps.date.month());
      tft.print(" ");
      tft.print(gps.date.year());

      String  Date=String(gps.date.day())+(" ")+(gps.date.month())+(" ")+(gps.date.year());
      

      //affichage ecran heure
      tft.setCursor(5, 20);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("heure : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.time.hour()+1);
      tft.print(" ");
      tft.print(gps.time.minute());
      tft.print(" ");
      tft.print(gps.time.second());
      tft.print("  ");
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
        tft.setCursor(3,  30);
       
       String Temps=String(gps.time.hour()+1)+(" ")+(gps.time.minute())+("  ")+(gps.time.second());
      
      

       //affichage ecran altitude
      tft.setCursor(5, 80);
      tft.print("H  m :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print (gps.altitude.meters(),0);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.setCursor(5, 95);
      hmax();
      tft.print("Hmax :");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(maxhigh);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      courbeh();
       

      //affichage ecran vitesse 
       tft.setCursor(5,  115);
       tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("V  act: ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print  (gps.speed.kmph(),0);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      tft.setCursor(5, 130);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      vmax();
      tft.print("vmax: ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(maxspeed);
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("   ");
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      courbe();
      
      

      
       //affichage ecran nombre  de satellites
      tft.setCursor(5, 147);
      tft.setTextColor(ST7735_GREEN,ST7735_BLACK);
      tft.print("nombre de Sat  : ");
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print(gps.satellites.value());
      tft.setTextColor(ST7735_CYAN,ST7735_BLACK);
      tft.print("  ");
      
      // Horizontal Dim. of Precision (100ths-i32)
      Serial.print("HDOP = "); 
      Serial.println(gps.hdop.value());
       
      
      
   

  
  
  smartDelay(400);

  // Ecriture des donnes dans le fichier texte
  File data=SD.open("donnees.txt",FILE_WRITE);
  data.println(Date + " " + Temps + " " + String(gps.location.lat(), 6)+" "+String(gps.location.lng(),  6)+(" ")+String(gps.altitude.meters(),0)+(" ")+String(maxhigh)+(" ")+String(gps.speed.kmph(),0)+("  ")+String(maxspeed)); 
  data.close();
  
}
  }
}
// delai pour  une bonne recption
static void smartDelay(unsigned long ms)
{
  unsigned  long start = millis();
  do
  {
    while (ss.available())
      gps.encode(ss.read());
  } while (millis() - start < ms);
}
void cadre() {
  // affichage ecran
       //cadre
       tft.drawLine(0,0,130,0,ST7735_RED);
       tft.drawLine(0,1,130,1,ST7735_RED);
       tft.drawLine(0,158,130,158,ST7735_RED);
       tft.drawLine(0,142,130,142,ST7735_RED);
       tft.drawLine(0,141,130,141,ST7735_RED);
       tft.drawLine(0,107,130,107,ST7735_RED);
       tft.drawLine(0,108,130,108,ST7735_RED);
       
       tft.drawLine(80,108,80,140,ST7735_RED);
       tft.drawLine(81,109,81,140,ST7735_RED);
       
       tft.drawLine(80,70,80,108,ST7735_RED);
       tft.drawLine(81,70,81,108,ST7735_RED);
       
       tft.drawLine(0,159,130,159,ST7735_RED);
        tft.drawLine(0,0,0,156,ST7735_RED);
       tft.drawLine(1,1,1,157,ST7735_RED);
       tft.drawLine(127,0,127,156,ST7735_RED);
       tft.drawLine(126,0,126,156,ST7735_RED);
       tft.drawLine(0,35,130,35,ST7735_RED);
       tft.drawLine(0,36,130,36,ST7735_RED);
       tft.drawLine(0,70,130,70,ST7735_RED);
       tft.drawLine(0,71,130,71,ST7735_RED);
       
}

void courbe() {


  int nouvelleValeur;

  //  converison vitesse max (350 km/h) en pixel
  nouvelleValeur = map((gps.speed.kmph()),  0, 150, 137, 110); // car l'cran a 64 pixels de haut
  
  
  x++;
 
  tft.drawPixel(x,nouvelleValeur,ST7735_CYAN);
  if (x>123) {
    x=80;
    tft.fillRect(82,110,43,30,ST7735_BLACK);
    
  }
}
void courbeh()  {


  int nouvelleValeurh;

  // converison vitesse max (350 km/h)  en pixel
  nouvelleValeurh = map((gps.altitude.meters()), 0, 1000, 104, 72);  // car l'cran a 64 pixels de haut
  
  
  xh++;
  
  tft.drawPixel(xh,nouvelleValeurh,ST7735_CYAN);
  if (xh>123) {
    xh=80;
    tft.fillRect(82,72,43,35,ST7735_BLACK);
    
  }
}
void vmax() {
// calcul vitese maximum 
      speed1 =  (gps.speed.kmph());
         if ( speed1 > maxspeed) {
         maxspeed =  speed1;
      }
  }
   void hmax() {
//      calcul altitude maximum  
      high1 = (gps.altitude.meters());
          if ( high1 > maxhigh) {
        maxhigh = high1;
      }
   }

Downloadable files

wiring prototype

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