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GPS Bicycle Computer w/ ESP32, Speedometer, SD Logging

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WiZeus

@WiZeus_229741

ESP32 (Arduino) Based Bicycle Computer with GPS and SD logging This is still work in progress but mostly functional…

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Aktualizacja u źródła: 12 kwi 2022

Informacje o modelu

Źródło: Printables
Kategoria: Other Ideas
Licencja: Creative Commons — Attribution

Szczegóły Pliki (10)Wydruki i komentarze (Wydruki: 0) (Komentarze: 0)Remiksy (0)Kolekcje (17)

ESP32 (Arduino) Based Bicycle Computer with GPS and SD logging

This is still work in progress but mostly functional this far.

The code and mechanical aspects of the project definitely work well enough for a daily usage scenario. *Documentation isn’t available yet, I’d recommend anyone to start this project who already has a decent understanding of electronics.

See the code for pin-definitions and / refer to the schematic in the pcb folder on GitHub*

Quick overview:

GPS Speedometer and other data such as altitude, traveled distance and time
128x64 LCD
RTC DS3231
Temperature and Humidity Sensor HTU21D
LDR for backlight adjustment
Micro SD for logging your trips
Charging over Qi Wireless charging
One user-button
2x 14500 LiFePO4 Battery

Print the necessary files and build the circuit.

Initially I planned for the unit to be recharged wirelessly by the bicycles dynamo generator. At least on my particular bike the output power was no where high enough. So I had to recharge the unit at home using a wireless charger powered by 5V. Keep that in mind when printing the files.

For prototyping I recommend to use a small breakout-board for the ESP32: https://www.aliexpress.com/item/32972157302.html

This is the LCD I used: https://www.aliexpress.com/item/32956038705.html

LiFePO4 Protection Board: https://www.ebay.de/itm/12A-1S-3-2V-LiFePO4-Lithium-Iron-Phosphate-Battery-Input-Ouput-Protection-Board/263309495883

Push Button Power Switch Board: https://www.ebay.de/itm/6A-Flip-Flop-Latch-Switch-Module-Bistable-Self-locking-Trigger-Board-LED-Motor/282381541189 alternative: https://www.aliexpress.com/item/32796080209.html

Qi Receiver Pad: https://www.aliexpress.com/item/32933478038.html

GPS: https://www.aliexpress.com/item/1872389528.html

Please note that the PCBs are still work in progress and contain errors.

More info on my website: https://wizeus.de/

See GitHub for the Code and other information: https://github.com/wilhelmzeuschner/esp32_gps_bicycle_computer