Blynk app uses the Map widget to pinpoint the user's location using the latitude and longitude data.ĭtTextAlignment(TEXT_ALIGN_LEFT) īlynk.virtualWrite(V0, 1, latitude, longitude, "Location")
If the data is available, the code encodes the data and checks if the encoded data is valid or not, if the data is valid, then the further calculation is done to transform the NMEA data to the understandable data.Īfter this, the GPS data is sent to the Blynk app and OLED display. Inside the loop() function, check if there is incoming data from the GPS module.
Inside the setup() function, initialize the Serial Monitor at a baud rate of 115200 for debugging purposes and also initialize the OLED display, GPS module, and Blynk with the begin() method.
In the next lines, enter your Wi-Fi name and password and also enter the Blynk Authorization key.Ĭonst char *ssid = "Wi-Fi Name" // Enter your Wi-Fi NameĬonst char *pass = "Wi-Fi Password" // Enter your Wi-Fi PasswordĪfter that, create an instance for the OLED display that includes the Address and pins where the display is connected. SH1106.h is especially created for ESP modules.Īfter that define the variables to store the Latitude and Longitude values. So as usual, start the code by including all the required libraries. These libraries can be downloaded from below links: In this program, we are going to use the Wire.h, TinyGPS++.h, SH1106.h and BlynkSimpleEsp32.h libraries. Here we are explaining some important parts of code. The complete code for ESP32 GPS Tracking System is given at the end of the page. By pressing the ‘Play’ button, you can switch your app from EDIT mode to PLAY mode where you can interact with the hardware. With this final step, you are ready to use your app. Inside the Widget box, select the ‘Map’ widget.Īfter this, click on the MAP widget and select virtual pin ‘V0’ as INPUT. Now in the next window, click on the “+” sign to add a widget.
Then click on ‘Create.’Īfter this, Blynk will send an Authorization to the registered Email id. Select ‘ESP32 Dev Board’ in the CHOOSE DEVICE option and ‘Wi-Fi’ in CONNECTION TYPE. Now click on ‘ New Project’ to start a new project. Connections between ESP32 and OLED Display are given as:Ĭonfiguring Blynk App for ESP32 GPS Trackerĭownload the Blynk app from the Google Play Store and create a new account or Login into your existing account. I2C mode is used to connect the OLED display Module (SSD1306) with ESP32. Vcc and GND pin of GPS Module is connected to 3.3V and GND of ESP32 while the RX and TX pins are connected to TX2 and RX2 pins of ESP32. Here we are interfacing the ESP32 with GPS Module and OLED Display. We previously used GPS module Neo 6M with NodeMCU and displayed the location coordinates on a web-page, check all the GPS based IoT projects here.Ĭircuit Diagram for ESP32 GPS NEO 6M is given below. The output is in the format of NMEA standards, which can be decoded to find the coordinates and Time of the location. The Time-to-First-Fix is less than 1 second and it enables it to find the satellites almost instantly. It is ideal for battery-operated mobile devices considering its architecture and power demands. It is a good performance GPS receiver with a compact architecture, low power consumption, and reliable memory options. It has 6 Ublox positioning engines offering unmatched performance. The NEO-6M module comes with a dimension of 16 x 12.2 x 2.4 mm package.
We previously interfaced OLED with ESP32.
The SSD1306 driver has a built-in 1KB Graphic Display Data RAM (GDDRAM).
The OLED display comes with a powerful single-chip CMOS OLED driver controller – SSD1306 that handles the entire RAM buffering. It is compatible with any 3.3V-5V microcontroller, such as Arduino. This display can easily be interfaced with microcontroller using IIC or using SPI communication and has a good view angle and pixel density which makes it reliable for displaying small level graphics. The OLED displays are one of the most common and easily available displays for a microcontroller. In this project, we are going to build an IoT based GPS Vehicle Tracking System using ESP32 where we will display the latitude and longitude values on OLED Display as well as on Blynk App so that it can be monitored from anywhere in the world. Previously we used GPS with NodeMCU ESP8266 to build a Vehicle Tracking System and Accident alert system.