Embedds highlights this useful project from Oscar Liang.
Small GPS device is always nice to have. One thing is that it can be used to tell the time. But most importantly it is used give coordinates of your position and other derivative values like speed and distance. Oscar wanted to build small GPS watch which were small enough to carry around and have useful features like logging.
Basically, GPS watch is based on Arduino Nano board which talks to Adafruit GPS module and Mini SD card module for logging. Information is also displayed on OLED mono color display. Watch is powered with single cell 600mAh LiPo battery. Charging module is also include in to box. Initial tests show that its accuracy is about 3meters and refresh rate is about 10Hz.
Featured Adafruit Product!
Adafruit Ultimate GPS Breakout – 66 channel w/10 Hz updates – Version 3 – New! Version 3 comes with the latest module which has external antenna support and Pulse-Per-Second output
We carry a few different GPS modules here in the Adafruit shop, but none that satisfied our every desire – that’s why we designed this little GPS breakout board. We believe this is the Ultimate GPS module, so we named it that. It’s got everything you want and more:
- -165 dBm sensitivity, 10 Hz updates, 66 channels
- 5V friendly design and only 20mA current draw
- Breadboard friendly + two mounting holes
- RTC battery-compatible
- Built-in datalogging
- PPS output on fix
- >25Km altitude
- Internal patch antenna + u.FL connector for external active antenna
- Fix status LED
…all for under $40!
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