Step 1 consists of preparing the M5Stack Core2 module. There's practically nothing to do as it comes pre-assembled with its screen, battery, and microSD card reader. All that's left is to format the 32GB microSD card to FAT32 and insert it into the card reader . Wi-Fi connection and time setting In order for the module to synchronize to the exact time and allow retrieval of data recorded on the microSD card via Wi-Fi , without having to remove it, you must enter your Wi-Fi

Step 1 involves connecting the M5Stack AtomS3 with the voltmeter and the anemometer motor. Step 2 involves installing the software inside the M5Stack AtomS3 module. To easily install it on the M5Stack AtomS3 module, you can use the M5Stack Burner utility which allows you to download and install the software very easily. Step 1 — Download and open M5Burner Download M5Burner for your system (Windows/macOS/Linux). Unzip the archive and open the M5Burner application. Tip: On macO

Find all the photos from the Class M regatta on 16/11/2025 at the CNCR, in Choisy Le Roy. We used three autonomous GPS buoys, two for the starting line and one as a leeward gate. They performed well, except for one whose computer shut down in the early afternoon, after several stable hours. Analysis of the problem to follow.

Step 1 consists of preparing the M5Stack AtomS3 lite module with the Atom v2 GPS. Simply place the Atom S3 on the Atom v2 GPS. Regarding food: For testing purposes, the module can be powered via USB-C. Next, connect the Adafruit PowerBoost 1000C module by connecting the red wire to 5V and the black wire from the Grove connector to GND. Connecting the LiPo battery to the Adafruit module (being careful to observe the correct polarity) will power the AtomS3 lite module. It is po

The first version of the anemometer is finished. Positioned on one of the autonomous buoys, it allows the wind speed on the body of water to be measured and transmitted to the remote display, which is located at the level of the radio control of the boats. Anémomètre accroché à la Bouée autonome Les données sont transmises sans fil (protocole ESP-Now) à l'afficheur qui se trouve sur la radio commande The wind speed display is shown in real time to compare boat speeds to wind

Le GPS est intégré dans un boitier étanche qui ferme la trappe du df95 We now have four GPS units to mount on DF95s, allowing us to track speeds in real time on a display near the remote control. Each unit has its own USB rechargeable battery. A magnetic switch allows the GPS to be turned on/off without opening the cover. The data transmitted to the display can be recorded onto an SD card and then replayed.

Three major components wirelessly transmit, using the same protocol (ESP-NOW), information allowing for the replay of a training session afterwards and the study of options taken in relation to other boats or according to the wind: Autonomous GPS buoys broadcast their positioning every second. One or more anemometers transmit the wind force over the body of water. The boats' GPS systems also broadcast their positioning every second. Le boitier bleu contient le GPS du bateau T

Three DF95s were equipped with GPS for training with three autonomous buoys, one of which had an anemometer. The following replays were used for debriefing and to refine race strategy.

Click on the photo below to see all the photos of the Class M regatta from 08/03/2026 at CNCR, in Choisy Le Roy, with about ten racers. We used four autonomous GPS buoys, two for the starting line and two as leeward gates. They performed very well and remained on the water, very stable, from 9:30 am to 5:00 pm. On average, 40% of the batteries remained after 7.5 hours of use in light winds. Cliquez sur la photo pour accéder à toutes les photos de la régate A video of the rega

Beautiful day for regatta racing, with mild temperatures but unfortunately little wind. A few pleasant breezes allowed us to complete 8 races. We used 4 autonomous GPS buoys to mark the course and reposition it according to the wind's whims. The buoys performed very well, remaining on the water for 7 hours. Enjoy the video summary below.