"He Ben,
I thought of using a side scanning sonar but i dont have a program to handle the data. I cant really give you any informations about that subject."
"Thanks for the link! That is an interesting project! Do you know what software they use and how it is with the copyright or if there are example pictures of the finisched map?"
"Hi Carl!
Great job so far! My first boat was just a pipe. After it worked out well, I put a lot of effort into the second boat.
At the beginning, I really didnt understand and like DELFTship but after several hours I understood the program. And now…"
"@Monroe Lee King Jr.:
Thanks for the link. That is an amazing project!
@ Trevor Strand:
I started with the first boat about a year ago. But i could not really spend a lot of time for it and the lakes where I use it are very far away and i was there…"
"@Justin:
I acutally thought about that as well but for huge lakes. It would be possible to supply the boat with solar power but i dont know anything about measuring depths of more than 50m. But you are right. Its a good idea!
"@ Antonie:
I am doing it for the fun of it:-). I know these lakes very well and I love working with Arduino so this seemed to be a nice project.
I use a Garmin Intelliducer. From 0 to 10 m it has a resolution of 0,1 m and from 10 to 300 m it has a…"
"@zheng jishi,
well this boat is not perfect waterproof. It can handle waves or rain. The tape makes it kind of waterproof but there are holes at the servo for example. My new boat from part 3 is waterproof though. If there are waterplants at the…"
With the help of several members of this community, I could make the prototype in the torpedo design work and I did a lot of measuring and mapping with it.It went very well, so I decided to build an improved version of the sonar boat which you can…
"Hi Dani!
I used the Ardupilot legacy for my project. It is working quite well and the price is really good. And for a boat only the gps is really needed. https://www.sparkfun.com/products/8785
Do you want to build your own or an already working boat?"
"Thanks a lot for the advises and offers! Every new idea will help me! Unfortunately, i have my ardupilot not here. I will get it next week, so i have to take a break:-(."
"@ Harry: I guess the oxigen levels and the themperatures are an important factor as well, but i cant measure them, when the there is ice on the water. I can only measure the depth in summer. But the temperature also depends to a certain point on the…"