That’s a new blog for me,
That’s a new blog for me, thanks.
Im working on a similar to
Im working on a similar to this one project but the chassis its quite different .
Some drastic redesign of the
Some drastic redesign of the hull. Looks a lot more energy “friendly” Was that the reason to redesign it or did the other hull cause more undesired effects?
Awsome
very nicely designed and built.
i love UAV’s and ROV’s, currently working on a UAV at school so anything of this kind has my immediate interest.
love your work
Joker94
chassis material
What did yo use to make the chassis (the yellow thing)?
The yellow thing is Gelcoat
The yellow thing is Gelcoat and on that there are 3 layers of fiberglass and epxoy.
The hull is made in the split mould I made first.
The main reason for
The main reason for redesigning it was the share weight of Whirligig, fully loaded it weight 50kg. The second reason was to have a system that could run from solar cells on a later phase. That was not so easy to do with Whirligigs current design.
Love to see it. Hope you
Love to see it. Hope you post some information about it here on LMR when you are ready. so easy to do with Whirligigs current design.
Interesting project, Geir. I
Interesting project, Geir. I am planing to making something similar to measure the water quality
nice work
Very interesting project! Can you tell something more about the sensor to measure the water depth?
Martin
Line following mode?
A simple addition to its program could turn it into a line follower. Following an isobath while recording lat/long coordinates.
Airmar DST800
Hi
The sensor is an Airmar DST800 http://www.gpsmart.ca/item7002.htm
That gives you standard NMEA 0183 sentences over a serial line.
I’m not sure I follow you
I’m not sure I follow you on this one.
The reason for mapping the lake is to build the map as none exists….
Building a map
I mean, only partly in jest, that the Sea Rendering could be programmed to search for a specific depth, say 50 m. And then stay with that depth-line (isobath). As it follows the isobath, a contour line would be produced. To be added to the map.
My guess is that such a strategy might be more efficient (for some mapping expeditions) than the scanning a grid strategy.
Can you explain what each
Can you explain what each microcontroller’s specific job is? I am guessing one is a master and 2 are slaves but what does each one do?
I must admit it is not as fancy as that
One Arduino is programmed to reformat and log information from the transducer and GPS. The only connection to the second Arduino is a line pulled high when logging is confirmed and we are ready to run the routing. The second Arduino handles navigation and logs each waypoint as we pass them. On calm water the accuracy is very good; most of the waypoints are passed in a distance of 1m or less.
This might seem as a waist of Arduino’s but it makes the programming and debugging much simpler. The plan is also to use the boat on other tasks, then it is easy to leave the navigation system in and change the logging Arduino to do something else or have a completely different system installed.
The PICAXE (poor thing) sits in the lid. Its only task is to measure ambient light an flash the lantern at intervals when it gets dark.
Ok so they are just about
Ok so they are just about completely independent of each other. (I thought that was a lantern light on top) I have one other question. I see what appears to be the EM406-a GPS but do you have a compass module? I would think the GPS would get bad heading data when turning to the next waypoint.
the programm you wrote
The programme you wrote is open-source or not?
And if its open-source from where can we download it?
There is no compass module
There is no compass module onboard and we rely on the GPS courses. I can see that a compass would probably optimize the waypoint turn but for now I’m very satisfied with the way it handles.
It isn’t critical that the line between the waypoints is not completely straight as long as we get enough depth and GPS readings for the mapping.
As this is a job
As this is a job commissioned by the University of Oslo, and the boat and software is their property, I can’t really release it as open-source. I’ll check and get back to you on that.