Since I don’t want to maintain development projects twice, and I’ve learned to love GitHub in the past, I’ll only refer to the repositories in this section.

• smoke-detector-alert
  7. February 2021
  Tapping of a potential-free relay contact of a smoke detector, alarm via MQTT and finally Telegram notification
• optimize-images
  10. December 2020
  Optimize and Compress JPEG or PNG Images in Linux Command line
• letsencrypt-transfer
  20. November 2020
  Transfer LetsEncrypt certificates from one Linux server to another
• powershell-shutdown
  16. November 2020
  Shutdown server systems in a data center in a certain predefined order
• checkmk-telegram-notify
  8. November 2020
  Get alerted by Check_MK via Telegram bash script
• postfix-bounce-report
  3. September 2020
  Creates an HTML report of blocked e-mail messages from Postfix
• ghostscript-pdf-rgb2cmyk
  12. August 2020
  Converts PDF files from RGB color space to CMYK color space for print service providers
• car-entertainment-system
  6. June 2020
  Build your own DIY car entertainment system with Raspberry PI, WiFi in ad-hoc mode and DLNA service
• infoscreen
  25. May 2020
  Arduino subscribes values by MQTT and view info on an OLED I2C display
• git-delete-history
  22. May 2020
  Delete the complete history of a git repository