If you haven’t done so already, please review the Android and Arduino Coding Fun page before continuing.
With this project the reader can use an Android device to display the speed and distance travelled by a small vehicle, such as bicycle, go kart or scooter. It features a speed limit setting that can be used to activate a beeper if the speed limit is exceeded. The speedometer logic is all in the Arduino, and the Android app is used for display and configuration.
For the speedometer you will need the following items, in addition to the core items:
- a reed switch,
- a magnet
Note, the Arduino digital pin 5 and GND are connected to the reed switch for measuring wheel rotations.
The source code is available for download as follows:
The video below demonstrates how to configure and use the speedometer Android app.
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