Thinkpad X230 Full HD IPS Upgrade

The Thinkpad X230 is still a great notebook, but a huge disadvantage is the poor display. Even with the IPS display, it’s quite hard to work with a resolution of 1366×768.

But finally, a Full HD modification is available. Nitrocaster, from the thinkpad forum, offers this modification board.

As seen in the picture, the PCB is directly mounted on the motherboard of the X230. The result with the LG LP125WF2-SPB4 Full HD IPS display is great, nice colors and a great resolution.

Link to the mod:

28. March 2017 by nasahl
Categories: electronics | Leave a comment

Wheaterstation with Oak and Omega

In this project I am using the Digistump Oak and the Onion Omega to display weater data on a webpage.


The Oak is a small IoT platform which allows to publish data to the particle cloud. With the Omega I am fetching this data and display the temperature, humidity, pressure and the ambient light with Highcharts.


Please find more information and the sourcecode on the Github project site.

20. August 2016 by nasahl
Categories: electronics | Tags: , , | Leave a comment

Hetzner and Let’s Encrypt

Hetzner webhosting allows you to import your own SSL certificates. First download certbot and create the certificates on your local computer.

mkdir certbot
cd certbot
chmod a+x certbot-auto
./certbot-auto certonly --manual -d

Now create the .well-known/acme-challenge/CERTBOT_ID with the corresponding CERTBOD_ID and the correct content on your webserver. To do this, create the directories and the file with the content in the public_html directory of the domain. The certificates have been created at /etc/letsencrypt/live/

In the Hetzner webinterface got to Domains – Your Domain and select Services – SSL Manger. At the SSL Certificates tab click Import.

The Certificate is stored in the cert.pem file, Key is in the privkey.pem file and CA in the chain.pem file. Copy and paste all the data from the files in the text boxes and click on Import certificates.



On SSL-Accounts the certificates can be assigned to the domain.

19. August 2016 by nasahl
Categories: Web | Tags: , , | Leave a comment

New EP/ESP page is up!

The new ESP page for the coming semester is up. Find the C lecture slides and tutorials on

19. August 2016 by nasahl
Categories: C, ep/esp, TU Graz | Tags: , , | Leave a comment