NanoGPS - Arduino Nano GPS Speedometer

With this code, you can connect an Arduino Nano with a NEO-6M GPS Module to get speed data, and display this on a simple 7-segment display.

Features

• Shows current speed in km/h once it locks onto satellites.
• Loading animation while attempting to lock onto satellites.
• Since it uses hardware serial communication, we can utilize a cheap 7-segment display without the flickering that software serial would cause.

Hardware Required

• Arduino Nano
• 7-Segment Display (Common-cathode)
• 8x 330 Ohm Resistors
• NEO-6M GPS Module

Wiring

GPS Module

The GPS Module is connected to the Arduino Nano via four wires.

• 5V from the Arduino to VCC on the module.
• GND from the Arduino to GND on the module.
• TX from the Arduino to RX on the module.
• RX from the Arduino to TX on the module.

7-Segment Display

Pinout of 7-Segment Display

This is how we will reference the pins when connecting them to the Arduino.

Resistors

We will connect a 330 Ohm resistor to each of the segment pins. These are as follows:

• Pin 1
• Pin 2
• Pin 3
• Pin 4
• Pin 5
• Pin 7
• Pin 10
• Pin 11

Wiring

How to connect the Arduino pins to the display pins. We are only using the digital pins on the Arduino.

• Arduino Pin 02 to Display Pin 07.
• Arduino Pin 03 to Display Pin 04.
• Arduino Pin 04 to Display Pin 03.
• Arduino Pin 05 to Display Pin 02.
• Arduino Pin 06 to Display Pin 01.
• Arduino Pin 07 to Display Pin 05.
• Arduino Pin 08 to Display Pin 10.
• Arduino Pin 09 to Display Pin 11.
• Arduino Pin 10 to Display Pin 12.
• Arduino Pin 11 to Display Pin 09.
• Arduino Pin 12 to Display Pin 08.
• Arduino Pin 13 to Display Pin 06.