Hi Hauke D

Thanks for such great help again and again, I can't show how all that is useful for me

Yes, I also see that 5.10.1 will probably be too old Perl version for the server now

Just in case, it would be good if your cloud provider offers you an easy way to increase that later if necessary.

Yes, it is possible, very quickly

While possible, I would say that it's probably better for the sensors to push their data to a central location (web server).

Yes, I agree. The idea of the opposite solution was from the past, when I wanted just to try connection to mysql database, whether internal or external, as an example on my cPanel shared hosting. The hosting company had very restricted rules for that kind of hosting, but with a short procedure, they would allow it, and maybe easier 2. The opposite then the first. Also, there was an already installed program for reading from external base to cPanel, so I wanted to try it. But unfortunatelly, at the end, I didn't make that test.

Thanks for recommending DBI module. Yes, I need a simple tool for that project, no need for something large

As you wrote, regarding images (graphs) for my first project, from more reasons then one is beter to work with static images. Also, I've already explained the additional idea I've got about several graphs. Although simple, I am sure it will give very good and nice results. I think everybody will agree that content is the most important, not the form. Of course, that doesn't mean we should not use very modern and powerful tools if we need that.

You and other perl monks definitely convinced me to Raspberry Pi . The fact that I can work in Perl is maybe prevailing. Before my beginning with Perl, RPi, although attractive, wasn't enough. In that time I wanted to avoid learning Python but now, since I already learn something new (Perl) and love it, even a bit of Python would not be a problem

I've visited your website about GPS Tools. Thank you for the link and I am happy to learn from your experience and your work and the experience of other perl monks. I will read that later more detailed.

When I see where you work, I will write something OT, but very short, you will see how much I love all this. It was during 1977, I was in secondary school, and for my thesis (90 pages) I measured air temperature, temperature of the water in the river and water level every day during the whole year. Thesis were about our local river ecosystem.

Thanks for suggesting USB as your better experience. I've mentioned serial port without any special reason. I didn't use it for such purposes yet, just know people used it before

note all systems should use NTP

Yes, I know that now, it become more clear to me on my Linux courses

* Note that when I say "CGI script",

Yes, I've understood that by intuition because you've already wrote about new modules for that

I must say I am overwhelmed with information but I know it will settle down, especialy when I start with the project. Because of many reasons, I could not start that project before, and also, I can't start at this moment yet, but will use that time to learn

Kind regards

predrag