The Komoot BLE Navigation Device Project

The goal of this project is to create an inexpensive turn-by-turn navigation device based on ESP32 and Komoot's BLE Connect API.

Overview

This repository includes all the necessary files to build your own turn-by-turn navigation device including the files for the 3D printable case.

User instructions

The battery can easily be charged by connecting the ESP32 to an USB charger if a controller with battery management is used (e.g. Adafruit Huzzah ESP32).
To wake up the device from deep sleep press the button. The welcome screen is shown and ESP32 starts searching for the Komoot BLE service.
Open the Komoot app on your phone and make sure Bluetooth on your phone is turned on. Start your navigation. There is no need to manually connect the ESP32 in the settings. After some seconds, the devices are paired.
The device now shows the navigation instructions from the Komoot app.
If connection is lost or navigation stopped, ESP32 tries to keep connection to the device for first 100 seconds. After this, it starts searching for new devices. If no new device is found for the next 100 seconds, it returns to deep sleep.
Device can manually be turned off by pushing the button. This takes approximately 2 seconds.

Status

This is a first prototype which is fully working and tested. New functionality and hardware may be added. The ESP32 is quite new and the Arduino implementation still undergoing many changes. It is recommended to use the same release as stated here because there were many issues with BLE when updating versions.

Next steps:

improve case/ make smaller
use larger display
smoothen images
add more functionality
add battery indication
continuously update used libraries

Hints

Device can not be completely turned off without disconnecting battery, but we can enter deep sleep by pushing button and waking up again by pushing same button
Device can be loaded over USB port (LiPo control on-board)
Rename main file in .ino to work with Arduino IDE