What electronic components are needed for an autonomous GPS buoy?
- FRA222
- Apr 12
- 2 min read
Updated: Apr 24
The buoy is composed of components very similar to those found in a drone. We primarily selected M5Stack components for their modularity, rich functionality, and the quality of the software libraries used to control them.
Autonomous GPS buoys come in two levels:
Standard buoy, controlled by a joystick (long-range LoRa protocol) for one to eight buoys, with local operation on the body of water
Advanced Buoy, controlled by a mobile phone application, requiring an internet connection for each buoy and a ground station, allowing for more advanced functionalities, such as regatta course management.
Our recommendation is to start with Standard Buoys. Upgrading to Advanced Buoys has little impact on the buoys themselves. However, it does require the installation of an additional ground station and an internet connection.
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Components for a Standard Buoy
M5Stack Components - Heart of the Buoy
 | $46.90 | |
 | $6.95 | |
 | $45 | |
 | $15.5 | |
 | $19.5 | |
 | $33 | |
 | $1.95 | |
Subtotal Heart of Buoy | $169 |
Other Components
 | $33.14 | |
| $33.14 | |
 | $22.13 | |
 | €7.98 | |
 | €7.99 | |
 | €9.99 | |
 | €9 | |
2 * Stainless steel screws M4 - 22 mm | ||
Lipo or LiFe battery - 4S 4000 mAh |
Additional components for an Advanced Buoy
M5Stack Components - Heart of the Buoy
For an advanced buoy, the above component, the LoRaE220-920 unit, is no longer necessary and is replaced by the module below:
 | $36.90 | |
 | €15 |
Hello Robert, Do you have a website for your 3D printer activity ? It is not very easy to design a 3D printed cone to be put on top of the buoy. If you have an idea on how to do that, it could be interesting.
This is some amazing development. Congratulations! Will the software and STLs for printing be available for download? How do the buoys fair in stronger winds? Are the motors and batteries able to maintain them in place under 15 or 20 knot winds? How visible are they at a larger distance and with choppy waves? I'm concerned that increasing the volume above water for greater visibility will also increase drag making it harder for motors to keep them in place in stronger winds. Could the buoys be built with cheaper components from , e.g. the Stamp controller and Unit series accessories?