Misc – www.haegi.org

16. July 2022

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digital signage

The digital signage project aims to provide the possibility to control a display which shows different website as slideshow. Therefore a website is embeding a iframe which plays different urls as slideshow.

The project can be found on: https://github.com/Trekky12/digital-signage

Slideshows

It is possible to create different slideshows containing slides. A slide is built from an URL and a duration how long this URL should be shown.

Clients

Clients are organized in client groups. To assign a client to a group the client needs to open the group specific URL in the browser of the client. Alternatively the electron app can be used.

When the client group URL is opened the assigned slideshows are shown. The client changes the URL defined in the individual slides after the assigned duration.

The currently active clients can be seen in the backend.

When the slideshow is changed the new slideshow needs to be send to the clients of a group.

18. December 2020

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Projects » Misc

kburns-slideshow

kburns-slideshow allows the creation of video slideshows from images with kburns (zoom/pan) effect, videos with and without sound and background music.

More details can be found on github: https://github.com/Trekky12/kburns-slideshow

7. July 2018

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Projects » Misc

Huawei Moving Picture / Momente Video Extraction

Huawei included a “Moving Picture” (german: “Momente”) feature like Apple has the “Live Photo” feature. This feature enables you to take pictures including a small video.

In contrast to Apples Live Photos the video is not saved on the device separately. The video is rather included in the image file behind the image. So I wrote a small python script to extract this video from the image.

The script can be found on github: https://github.com/Trekky12/moving-picture-extract

Extra tip:
The python script of jpbarrace is capable of extracting the EDOF and the unprocessed images of pictures captured in the “wide aperture mode” (german: “Große Blende”)

3. November 2017

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Projects » Misc

MySQL Dropbox Backup

I wrote a small PHP script to backup a specific MySQL database, compress the dump in a password-protected zip-file and upload it to dropbox.
You can find it on github: https://github.com/Trekky12/mysql-dropbox-backup

9. September 2017

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Projects » Misc

Secure USB Power Supply

While reading about dangerous USB power supplies I decided to investigate the safety of the power supplies used by my wordclocks. I stumbled across the USB power supply tests of HJK and discovered a similiar power supply to the one I am currently using (ETA-U90EWE) which is according to the test result not that secure.

HJK saw a passed safety test for the Flypower PS10A050K2000EU so I decided to buy these. Unfortunately the reseller sent me the follow-up product: the Flypower PS10E050K2000EU. To make sure the new model also passed a safety test I contacted Flypower and they showed me the CE and GS safety test results. So I can confirm this follow-up model is also secure to operate.
They also showed me the CE and GS safety results for the next generation Flypower PS10J which should be also secure.

I disassembled the power supplies to make sure the short voltage distance is big enough. You can see the big distance on the Flypower PS10E (left) and a very bad distance on the ETA-U90EWE (right) on the images below.