You do not have AIS receiver on board? Did you know that it is now possible to receive AIS data with a small and low cost AIS receiver called dAISy?
dAISy is an awesome, low cost AIS receiver that plugs directly into the USB port of your device with a USB OTG cable. Daisy is available online for $ 59 cost. A newer device, dAISy 2+ is available for $89.
Sélectionnez dAISy comme source nmea et le tour est joué. Pensez à sélectionner votre GPS interne comme source de position.
Select dAISy as your NMEA source, that’s it!
Do not forget to set your GPS source as internal.
To use the app during your cruising at the same as SailGrib, it is necessary to use a USB OTG cable that can simultaneously charge your tablet and the USB dongle. You can find some on www.dx.com.
With, the dAISy 2+, you can also buy a small wifi card (DT-06 TTL to Wifi) that will allow you to receive AIS data in WiFi and to power the dAISy separately. You can buy this card on the SmartArduino website for about 5$. You will find here the instructions for configuring the card. In SailGrib, select “Others” as the NMEA source and adjust your settings.
Finally, may I remind you that the theoretical reception distance can be roughly calculated using the formula: Distance = 2.2 x (+ √H1 √H2) where H1 and H2 are the heights of the two antennas in meters and the theoretical reception distance D in nautical miles.
So, if your antenna and the target are each at a 10 meter height, the theoretical reception distance is around 14 nm. If your antenna is only at a 1m high, the distance will decrease to 9 nm.
Caution: your receiver will not have the quality of a Marine AIS receiver; we assume no liability for the use of this type of device.