I’m beginning with a new project: a cheap and easy hypsometer.
As I’m studying Forestry Engineering, I realised how important is the measurement of trees (and other elements) for a correct study of the environment. The problem is… Well… The object we want to measure can be not easy to reach or is too tall. With the hypsometers we solve that problem, as we use optical tools and geometric calculations to perform the measures. However, the hypsometers are very expesive tools, and that is a problem, especially for development countries.
My intention is to build an advanced digital hypsometer, but using the cheapest components. That means that I will develop both Arduino and Android versions, and I will compare time and resources used (time is gold).
If everything goes right, I will also add some functions to the Arduino version (for example, Bluetooth connection for using a smartphone/tablet to analyse or store the data).
Thinking and thinking… I really believe that my old posts are too outdated right now. Instead of reposting old material, I will write new things. If you need something that I wrote then, you can try searching at http://web.archive.org
If you are using a distro with Plymouth, like Ubuntu and derivatives (Linux Mint, etc) you will have problems when using propietary drivers. You will have a logo-text instead of the original-graphic one. Something like this:
The fix is a mess, but there is a script that can help you:
Author of the script: D0rkye http://d0rkye.zsenialis.com/
Most code probably by kyleabaker: http://kyleabaker.com/2010/07/11/how-to-fix-your-ubuntu-boot-screen/
Script via http://www.webupd8.org/2010/10/script-to-fix-ubuntu-plymouth-for.html
Let’s face it. Linux is (almost) free. Linux is Open Source. But if a company have a product and don’t want to share their technology, we can:
a) Wait until somebody figures up how to replicate their technology or…
b) Install closed and proprietary software.
Sometimes we have no alternative and we must choose the b) option. This happens sometimes with the PDFs. The built-in PDF reader in almost all distros come with a more-than-decent compatibility and is really complete. However, some things like formulas are not going to be shown properly. The solution is as easy as installing the official Adobe Acrobat Reader.
Nevertheless, due to a little bug, under some distros like Linux Mint, if you try to open a file with Acrobat Reader using the [Right Click] > Open With you will discover that… Open with Acrobat Reader is missing!!!
To solve it we need to edit the desktop file using the terminal:
If you have a new Android device with internal storage (like Nexus 4) and you try to copy data from/to your computer, you probably will realize that you are not able to access. This is because you have not a proper MTP support in your Linux machine.