My name is Truls Cronberg, as you might guessed. I live in Sweden. Since 1999 years I have worked as a Math and Science Teacher. I have also been hired for scheduling and IT related work.

I have been doing programming in more than twelve languages, but focusing more and more on web programming with Javascript. I am moving over from php/MySQL to Javascript/Firebase.

At TrulsCronberg.com you find some of my hobbies:

• photos that I have taken are can be found in Photography.
• weather and aurora related information.
• planispheres and other astronomy related information are saved under Astronomy.
• I have some RaspberryShakes for fun. And they will be viewed under Earthquakes.

I have a another site in Swedish, TrulsCronberg.se:

• There you can find Träna Matte to learn and exercise basic arithmetic.
• There are teaching material for Mathematics, Science and Technology.