Hello Arduboat skippers
Here is a video about an rc airboat with an apm 2.6 controller and the latest version of ArduRover software. Only a minimal tweaking was necessary for a rock solid track. The speed of the boat is 3 km/h. It's purpose is mapping the bottom of an acid lake. So no metal parts in the water and only air propulsion. The boat is covered with 5 layers of epoxy paint. In a previous life it was a bait boat.
It still has to be equipped with a sonar. Do you guys have any ideas about what sonar would be suitable?
Guy Van Rentergem
Two things which keep the boot on track:
1) The boat itself ;-) It has two fins. Without these It sails like a drunk captain.
2) And tuning the APM's parameters. The most important one was NAVL1_PERIOD. But here is a list of the other tweaked params:
NAVL1_PERIOD 30 seconds
WP_RADIUS 2 m
CRUISE_SPEED 0.8 m/s
The electronics are the standard APM 2.6, 3DR GPS and 400 MHz data link. Nothing special.
I'm still working on which sonar to use...
Great to see the perfect coursekeeping.
@Guy, can you also share some more details of your boat, the equipment used and the interface made? I'm asking because I did already a few attempts to implement my own APM, although not very succesfull. Probaly some pictures already do help a lot.
By the way, the following discussion might be of help for your transducer question:
The second day of testing the air boat
Here is the page on my RSV Project where I added a Garmin Intelliducer to my RSV. It is spread over a number of pages.
For an easy to deploy and compact system take a look at the Garmin Intelliducer
As I understand it, conventional reactreational boat sonar transducers can be mounted within the hull, provide you graft a PVC tube to the inner hull, fill the tube with some medium (mineral oil or distilled water?), place the transducer into the tube, top off the tube with more medium, then seal it with a screw on cap. Usually the transducer is mounted inside the cap with the wire passing through the cap to make installation and maintenance easier.
Here is an image showing how nice the boat keeps it track
Nice work! Well done.