How to add a GPS sensor to ESP32 for Wokwi?

 To add a GPS sensor to an ESP32 in Wokwi, follow these steps:

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 Step-by-Step Guide

1. Open Wokwi

Go to https://wokwi.com and start a new project with ESP32.

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2. Add the GPS Module

Wokwi supports a virtual "NEO-6M GPS module".

You can add it in the diagram.json file or via the visual editor.

Example diagram.json:

json

{
  "version": 1,
  "author": "you",
  "editor": "wokwi",
  "parts": [
    {
      "type": "wokwi-esp32-devkit-v1",
      "id": "esp32",
      "top": 100,
      "left": 50
    },
    {
      "type": "wokwi-gps",
      "id": "gps1",
      "top": 100,
      "left": 250
    }
  ],
  "connections": [
    [ "gps1:TX", "esp32:RX2", "green", [ "v0" ] ],
    [ "gps1:RX", "esp32:TX2", "green", [ "v0" ] ],
    [ "gps1:GND", "esp32:GND", "black", [ "v0" ] ],
    [ "gps1:VCC", "esp32:3V3", "red", [ "v0" ] ]
  ]
}

This connects the GPS module to UART2 on the ESP32 (GPIO 16/17 by default on Wokwi).

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3. Arduino Code Example

Use a library like TinyGPSPlus to parse GPS data:

cpp

#include <TinyGPSPlus.h>
#include <HardwareSerial.h>

TinyGPSPlus gps;
HardwareSerial gpsSerial(2);  // Use UART2 (GPIO16=RX, GPIO17=TX)

void setup() {
  Serial.begin(115200);
  gpsSerial.begin(9600, SERIAL_8N1, 16, 17);  // Baud rate and pins
  Serial.println("GPS Test");
}

void loop() {
  while (gpsSerial.available() > 0) {
    gps.encode(gpsSerial.read());
  }

  if (gps.location.isUpdated()) {
    Serial.print("Latitude: ");
    Serial.println(gps.location.lat(), 6);
    Serial.print("Longitude: ");
    Serial.println(gps.location.lng(), 6);
  }
}

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 Add Required Library

Make sure to add TinyGPSPlus in the PlatformIO or Arduino library manager if you're exporting or using offline tools. In Wokwi, it will be auto-loaded.

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 Simulation Tips in Wokwi

• Click the GPS module and edit the "GPS Data Source" — you can load a custom .nmea file or simulate movement.

• Default GPS data simulates a fixed position with realistic timing.