Project Name: GPS Portable Module V2.0
Project Author: Fei Wolf Uno
Using a free PCB to create a GPS smart watch!
Can last up to 100 days!
Netizens are drooling over it!
This is a GPS portable positioning watch 2.0, designed using ESP32C3 as the main control.
It has 5 major applicable scenarios and 7 major functions!
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Suitable for backpackers, climbing, hiking -
Can navigate using GPS with paper maps in outdoor areas with no network and low battery -
As a regular smart electronic watch -
As a backpack accessory -
As a desktop ornament
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Adding a 4G module makes it a great anti-loss tool for the elderly -
Adding solar charging can make it last “until the end of time”
① Display system time
② Positioning function
After successful positioning, it will display the current latitude and longitude information
③ Compass function
④ Altitude display
⑤ Temperature and humidity display
⑥ Flashlight function, 4 adjustable levels
⑦ Screen-off display
After 60 seconds of inactivity, it automatically enters this interface, and after 30 minutes, it automatically powers off
To achieve these functions, the hardware design is not actually complex.
Schematic Diagram
PCB Diagram
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OnboardSHT30 Temperature and Humidity Sensor
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BMP280 Barometer
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PCF8563 RTC
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QMC5883L Magnetometer
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4 pieces of0805 LED and vibration sensor.
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Screen visible in sunlight: 1.3-inch large rectangular OLED with full viewing angle, clear even in sunlight.
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ESP32C3 has USB CDC function for direct connection to a computer for one-click downloading, making development more convenient.
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Ultra-low power consumption: Designed with area power control function, achieving one-button power on without adding buttons, maintaining power, and automatic shutdown. It can also disconnect the power supply except for the main control to achieve ultra-low power consumption.
After the main control and modules are powered off, only the RTC chip remains active, with a standby current of only 3uA, using a 500ma/h battery, it can standby for over 100 days.
With all functions on (except WiFi and Bluetooth), it can be used continuously for 7 hours.
① Temperature sensor, magnetometer, barometer are temperature-sensitive devices, need special protection before welding. Low-temperature solder and iron plate can be used for reflow soldering, temperature should not exceed 250℃.
② Pin headers need to be cut short in advance, welding should be kept smooth, do not scratch the battery.
③ Screen ribbon cable may touch the Type_c interface, please use necessary protective measures.
The PCB adopts a 3D stacking design, making the structure more compact.
Shell material: TPU, very soft and wear-resistant
Shell back cover: 8001 transparent resin, light-transmitting and waterproof
3D printed parts can be made at Jialichuang 3D printing, cheap and easy to use
This project is open source: 3D models, schematic diagrams, PCB, and program code.
For【Project source files + video demonstration files】, please “scan the code” or “copy the link” to enter the open source page to view.
Copy the open source URL and open it in any browser:https://oshwhub.com/trustedzxz/gps-sui-shen-mo-kuai-v2-0
If you have any questions, you can comment and consult the original author under the open source project!
*This article is a reprint of the user creation from the “Lichuang Open Source Hardware Platform”, if there is any infringement, please contact for deletion
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