NEO-6M GPS with Arduino Uno R3

Wiring for the NEO-6M GPS module (GY-NEO6MV2) on the Arduino Uno R3 (ATmega328P, 5 V logic), chosen with the same pin rules BoardPilot uses: default buses first, and no pins that are used for flash, USB, the debugger or booting.

Wiring

Check before you power it on

• Supply: 5 V from the 5V pin.

Test code (Arduino)

// Library: SoftwareSerial (built in)
#include <SoftwareSerial.h>

SoftwareSerial gps(3, 2);  // RX, TX

void setup() {
  Serial.begin(115200);
  gps.begin(9600);
}

void loop() {
  while (gps.available()) Serial.write(gps.read());  // NMEA sentences, e.g. $GPGGA
}

Arduino board: arduino:avr:uno.

Questions

Which Arduino Uno R3 pins do I use for the NEO-6M GPS?

VCC → 5V, RX → 2 (PD2), TX → ~3 (PD3), GND → GND.

Does the NEO-6M GPS work with the Arduino Uno R3 at 5 V?

Yes: the NEO-6M GPS runs at 3.3-5 V and the Arduino Uno R3 uses 5 V signals, so no level shifting is needed.

Full Arduino Uno R3 pinout · NEO-6M GPS module (GY-NEO6MV2): all pins and data

The NEO-6M GPS on other boards

ESP32 DevKit Arduino Mega 2560 R3 Arduino Nano WeAct Black Pill STM32F411CE ESP32-C3-DevKitM-1 ESP32-S3-DevKitC-1 Nordic nRF52840 DK NUCLEO-F401RE Raspberry Pi Pico 2 Raspberry Pi Pico W Raspberry Pi Pico Teensy 4.1

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