https://sebastianzehner.com/posts/Recent content in Posts on Sebastian ZehnerHugoenblog@techlab.icu (Sebastian Zehner)blog@techlab.icu (Sebastian Zehner)<span class='custom-footer-icon'></span>2026 Sebastian ZehnerMon, 22 Jun 2026 21:25:07 +0000https://sebastianzehner.com/posts/from-papermod-to-blowfish-why-i-switched-my-hugo-theme/Mon, 22 Jun 2026 21:25:07 +0000blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/from-papermod-to-blowfish-why-i-switched-my-hugo-theme/hugoblowfishbloggingwebsitecatppuccinAfter years with PaperMod I switched my Hugo blog to Blowfish. What convinced me, what&rsquo;s different, and why Catppuccin plays a role.https://sebastianzehner.com/posts/cactus-comments-blog-comments-matrix-server/Sat, 18 Apr 2026 17:10:00 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/cactus-comments-blog-comments-matrix-server/matrixcactushomeserverhugosynapseopen-sourceself-hostingHow I integrated Cactus Comments – a decentralized, tracking-free commenting system built on my own Matrix server – into my Hugo blog, including the client build, appservice setup, and Catppuccin styling.https://sebastianzehner.com/posts/self-hosting-matrix-homeserver-synapse/Wed, 08 Apr 2026 14:00:00 +0000blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/self-hosting-matrix-homeserver-synapse/matrixhomeserversynapseopen-sourceself-hostingIn this article, I set up my own Matrix homeserver using Synapse and Docker Compose. Alongside a brief introduction to the decentralized Matrix protocol, I walk through the complete installation with PostgreSQL, Traefik, and Cloudflare Tunnel.https://sebastianzehner.com/posts/installing-dd-wrt-on-the-tl-wr949n-the-complete-guide/Tue, 31 Mar 2026 22:57:00 +0000blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/installing-dd-wrt-on-the-tl-wr949n-the-complete-guide/routerfirmwaredd-wrtHow I flashed the Brazilian TP-Link TL-WR949N router with DD-WRT: including a workaround for the SSID issue related to Error 18005, a step-by-step guide, and information on using TFTP for recovery.https://sebastianzehner.com/posts/ollama-context-window-optimization-opencode/Sat, 10 Jan 2026 22:20:00 +0000blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/ollama-context-window-optimization-opencode/ollamallmopencodeopen-sourceterminalThe Context Window is the “invisible bottleneck” in many Ollama setups. Here are three approaches to optimize its performance, practical tests using various models, and specific recommendations for successfully integrating OpenCode with LLMs.https://sebastianzehner.com/posts/hugo-series-function-multi-part-posts/Mon, 05 Jan 2026 00:35:10 +0000blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/hugo-series-function-multi-part-posts/hugobloggingmarkdownIn line with my planned blog series, I have integrated a series functionality into Hugo. In this tutorial, I will show you how to create multi-part posts with automatic numbering and navigation.https://sebastianzehner.com/posts/md-translator/Wed, 17 Dec 2025 20:00:00 +0000blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/md-translator/hugomarkdownbloggingaillmclaudeMultilingual blogs incur translation costs. Manual translations are expensive, while automated tools often damage the Markdown format. How can one still remain efficient and preserve the original format?https://sebastianzehner.com/posts/el-paraiso-verde-paraguay-an-update-and-in-depth-look-at-the-expat-community-project/Thu, 16 Oct 2025 09:25:00 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/el-paraiso-verde-paraguay-an-update-and-in-depth-look-at-the-expat-community-project/TransparencyLegal SecurityEl Paraiso VerdePropertyExpat CommunityEmigrationTitleAn overview of El Paraiso Verde in Paraguay: developments within the expat community, challenges arising from social media campaigns, legal aspects, and unresolved questions concerning the management of the settlement.https://sebastianzehner.com/posts/docker-compose-homelab-my-journey-connected-container-infrastructure/Fri, 15 Aug 2025 09:04:00 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/docker-compose-homelab-my-journey-connected-container-infrastructure/LinuxDockerComposeContainerHomelabIPvlanNetworkingWith clearly structured volumes, dedicated networks, and a bit of automation, my services run reliably across multiple Linux systems. They are quick to deploy, easy to update, and stable.https://sebastianzehner.com/posts/coral-edge-tpu-hardware-acceleration-for-ai-object-detection/Wed, 13 Aug 2025 09:15:00 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/coral-edge-tpu-hardware-acceleration-for-ai-object-detection/LinuxFrigateAICoralTPUNVRDockerCCTVFor my Frigate Docker container, I wanted to enable AI object detection with hardware acceleration. Therefore, I bought an M.2 Accelerator Coral Edge TPU chip with an A+E key and installed it in my home server.https://sebastianzehner.com/posts/frigate-open-source-nvr-real-time-ai-object-detection/Tue, 12 Aug 2025 18:35:10 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/frigate-open-source-nvr-real-time-ai-object-detection/LinuxFrigateAICoralTPUNVRDockerCCTVFrigate is an open-source Network Video Recorder (NVR) that combines traditional video surveillance with AI-powered real-time detection of people, vehicles, animals, and other objects.https://sebastianzehner.com/posts/nut-in-the-homelab-central-ups-monitoring-and-automation/Thu, 07 Aug 2025 20:35:10 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/nut-in-the-homelab-central-ups-monitoring-and-automation/LinuxUPSNUTDockerBlackoutMy homelab uses several uninterruptible power supplies (UPS) – including models from <strong>Eaton</strong> and <strong>CyberPower</strong> – to protect servers, NAS devices, and network equipment during power outages.https://sebastianzehner.com/posts/rainy-75-pro-this-is-what-my-perfect-keyboard-looks-like/Tue, 05 Aug 2025 09:35:10 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/rainy-75-pro-this-is-what-my-perfect-keyboard-looks-like/linuxkeyboardRainy75ProkeydsetxkbmapIn April 2025, I finally found it: my perfect keyboard. The Rainy 75 Pro from Wobkey isn&rsquo;t just high quality – it completely won me over from the very first keystroke.https://sebastianzehner.com/posts/ipo-shares/Sat, 07 Dec 2024 17:00:00 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/ipo-shares/SharesFinancesCryptocurrencyBitcoinTake action - Seize your “once-in-a-lifetime opportunity” now! Invitation to our confidential presentation.https://sebastianzehner.com/posts/how-to-upload-and-publish-a-hugo-website/Fri, 06 Dec 2024 15:00:00 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/how-to-upload-and-publish-a-hugo-website/HugoWebsitePaperModIn the second part of this series we created some content for your free Hugo website and today we want to upload and publish this content to the internet for free.https://sebastianzehner.com/posts/buying_land_in_el_paraiso_verde_with_bitcoin-a_new_era_of_investment/Sun, 01 Dec 2024 08:11:00 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/buying_land_in_el_paraiso_verde_with_bitcoin-a_new_era_of_investment/BitcoinCryptocurrencyEl Paraiso VerdePropertyFinancesEmigrateTitleIn a world increasingly characterized by cryptocurrencies, El Paraiso Verde in Paraguay offers a pioneering opportunity: Buying land with Bitcoin now.https://sebastianzehner.com/posts/self-hosted-social-media-management-with-mixpost/Sun, 25 Aug 2024 18:07:53 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/self-hosted-social-media-management-with-mixpost/Social MediaMixpostSimple LifeI had the idea to simplify my social media engagement but without paying a lot of money or even monthly subscription fees. I found Mixpost as a self-hosted social media management solution. Today I share my experience.https://sebastianzehner.com/posts/how-to-create-content-for-your-free-hugo-website/Tue, 13 Aug 2024 16:05:39 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/how-to-create-content-for-your-free-hugo-website/WebsiteHugoPaperModToday I will show you how to create content with a Hugo website, how to add a menu, tags and categories and how to make some special settings.https://sebastianzehner.com/posts/how-do-we-sign-our-ssl-certificates-with-openssl-for-local-web-services/Wed, 31 Jul 2024 20:53:58 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/how-do-we-sign-our-ssl-certificates-with-openssl-for-local-web-services/OpenSSLHTTPSCertificatesLANIn this blog post, I document how we create self-signed SSL certificates and use them securely in the local network. A local web server is running on an older Raspberry Pi in my Homelab.https://sebastianzehner.com/posts/how-to-build-a-minimalistic-and-self-hosted-website-for-free/Mon, 22 Jul 2024 10:29:42 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/how-to-build-a-minimalistic-and-self-hosted-website-for-free/WebsiteHugoPaperModYou&rsquo;re here on my new minimalistic and free website. I built this website some weeks ago because I like it simple and replaced WordPress with Hugo and PaperMod Theme for my personal blog on the Internet.https://sebastianzehner.com/posts/how-i-paid-for-my-domain-with-cryptocurrency/Fri, 19 Jul 2024 10:17:58 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/how-i-paid-for-my-domain-with-cryptocurrency/HostingerCryptocurrencyTronDomainIn today&rsquo;s digital world, domains are an essential part of any website. But what if you have the flexibility to pay for your domain with cryptocurrency?https://sebastianzehner.com/posts/title-in-el-paraiso-verde/Wed, 10 Jul 2024 22:04:08 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/title-in-el-paraiso-verde/TitlePropertyEl Paraiso VerdeLand RegisterEmigrateAfter several years of rumors that we had no title and that we would never get a title for our property, I would like to go into more detail about our title today.https://sebastianzehner.com/posts/my-new-minimalistic-and-free-website/Mon, 08 Jul 2024 16:20:40 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/my-new-minimalistic-and-free-website/hugoPaperModwebsitesimple lifeThis is my first new post on this website.https://sebastianzehner.com/posts/move-to-paraguay-the-impending-financial-crisis/Sun, 26 Mar 2023 18:39:41 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/move-to-paraguay-the-impending-financial-crisis/El Paraiso VerdeEmigrationFinanceWe’re doing extremely well here. We have summer temperatures in Paraguay that make swimming irresistible. Just recently, we had a heavy rainstorm, which has made our property in Paraguay even greener.https://sebastianzehner.com/posts/quincho/Mon, 16 Jan 2023 15:51:42 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/quincho/El Paraiso Verdequinchopain therapysimple lifeemigrateOur quincho is now finished and Stefanie`s treatment room is also operational. A handful of little things are still missing, but more on that in a moment. As always, time passes very quickly here and another few months have passed.https://sebastianzehner.com/posts/the-new-path-from-our-house-to-the-quincho-is-finished/Sun, 25 Sep 2022 15:51:42 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/the-new-path-from-our-house-to-the-quincho-is-finished/El Paraiso VerdeQuinchoKitchenSimple LifeMoving AbroadIn my last post, I talked about the construction of our new quincho (a traditional Andean farmhouse). We also planned to build a new path from our house to the quincho, and at the same time, we wanted to extend the terrace by an additional 2.50 meters.https://sebastianzehner.com/posts/our-quincho-is-under-construction/Thu, 18 Aug 2022 17:34:14 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/our-quincho-is-under-construction/El Paraiso VerdeQuinchoPain TherapySimple LifeEmigrateGardenConstruction began some time ago, and the structure is almost complete. First, a compacted mud platform was created to provide a solid foundation for our Quincho.https://sebastianzehner.com/posts/interview-after-two-years-in-paraguay-and-a-flight-over-el-paraiso-verde/Sun, 08 May 2022 23:20:50 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/interview-after-two-years-in-paraguay-and-a-flight-over-el-paraiso-verde/El Paraiso VerdeSightseeing FlightInterviewEmigrationIn this blog post, I would like to report again on my interview from last year and also on our sightseeing flight over the settlement area in March 2022.https://sebastianzehner.com/posts/lots-of-progress-on-our-property-in-paraguay/Sat, 07 May 2022 12:32:00 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/lots-of-progress-on-our-property-in-paraguay/El Paraiso VerdeQuinchoPain TherapyWoodworking WorkshopKitchenEmigrateGardenHere’s a brief summary of everything I built for us last year. The biggest project was undoubtedly our kitchen. There were numerous details to take into account, and we can already use the kitchen, but it’s not yet completely finished.https://sebastianzehner.com/posts/construction-of-a-small-wood-workshop-on-our-property-in-paraguay/Tue, 04 May 2021 12:42:25 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/construction-of-a-small-wood-workshop-on-our-property-in-paraguay/El Paraiso VerdeWood WorkshopEmigrateWe are currently having a small workshop built. I had already taken this into account when building our carport, because at some point there was supposed to be a small room at the back that I could use as a workshop.https://sebastianzehner.com/posts/update-from-our-property-and-house-in-paraguay/Fri, 26 Mar 2021 18:09:01 +0000blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/update-from-our-property-and-house-in-paraguay/El Paraiso VerdeWe already have a lot to do again and are very busy. I’m working on various projects, and today I would like to share with you some updates about our life in Paraguay.https://sebastianzehner.com/posts/move-into-our-new-house-in-paraguay/Thu, 14 Jan 2021 23:22:50 +0000blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/move-into-our-new-house-in-paraguay/El Paraiso VerdeA lot of time has passed since then, and we have been living in our own house in Paraguay for a few months now. We actually have electricity, water, and internet at our property.https://sebastianzehner.com/posts/house-construction-in-paraguay-part-3/Sun, 16 Aug 2020 17:06:45 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/house-construction-in-paraguay-part-3/House ConstructionEl Paraiso VerdeSimple LifeEmigrateWe have been living in Paraguay for more than nine months now and today there is another update on our house construction. This will probably be the last update.https://sebastianzehner.com/posts/house-construction-in-paraguay-part-2/Sun, 14 Jun 2020 17:30:58 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/house-construction-in-paraguay-part-2/House ConstructionEl Paraiso VerdeSimple LifeEmigrateWe have been living in Paraguay for over seven months now and today I would like to write an update on our house construction and also report on how we are doing with the current situation.https://sebastianzehner.com/posts/house-construction-in-paraguay-part-1/Sun, 08 Mar 2020 18:13:29 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/house-construction-in-paraguay-part-1/House ConstructionEl Paraiso VerdeSimple LifeEmigrateWe have been living in Paraguay for four months now and have settled in well, we do not want to go back to Germany. The last few months have been very busy with our landscaping and planning for the house construction.https://sebastianzehner.com/posts/move-to-paraguay/Fri, 06 Dec 2019 19:07:01 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/move-to-paraguay/El Paraiso VerdeSimple LifeEmigrationWe departed Germany on November 6, 2019, and moved to Paraguay. We have been living here for almost a month now, and we are gradually getting used to the new surroundings.https://sebastianzehner.com/posts/road-trip-trough-spain-and-portugal-in-a-motorhome-part-4/Tue, 26 Nov 2019 09:58:23 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/road-trip-trough-spain-and-portugal-in-a-motorhome-part-4/vanliferoadtriptravelToday I am writing the last part of our motorhome road trip through Spain and Portugal. The end in France was more like a vacation, as we stayed at the same campsite for a long time.https://sebastianzehner.com/posts/road-trip-trough-spain-and-portugal-in-a-motorhome-part-3/Wed, 04 Sep 2019 10:36:22 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/road-trip-trough-spain-and-portugal-in-a-motorhome-part-3/vanliferoadtriptravelSome time has now passed and we have already arrived back in Spain and are almost back in France. At least we plan to be back in France by September 15, 2019 at the latest.https://sebastianzehner.com/posts/road-trip-trough-spain-and-portugal-in-a-motorhome-part-2/Sun, 21 Jul 2019 11:22:06 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/road-trip-trough-spain-and-portugal-in-a-motorhome-part-2/vanliferoadtriptravelAfter we left the campsite in Árvore, we first went back to Vila do Conde in the motorhome to go shopping.https://sebastianzehner.com/posts/mobile-internet-in-spain-and-portugal/Mon, 08 Jul 2019 16:33:59 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/mobile-internet-in-spain-and-portugal/vanliferoadtriptravelDuring our motorhome road trip to Spain and Portugal, we would of course also like to have access to fast and decent internet. I looked at a few options beforehand but did not know how and whether everything would run so well abroad.https://sebastianzehner.com/posts/road-trip-trough-spain-and-portugal-in-a-motorhome-part-1/Thu, 27 Jun 2019 12:08:44 -0300blog@techlab.icu (Sebastian Zehner)https://sebastianzehner.com/posts/road-trip-trough-spain-and-portugal-in-a-motorhome-part-1/vanliferoadtriptravelLast year we decided to travel on a longer trip with our motorhome. As we both loved seeing Portugal, it quickly became clear to us that we would first drive south along the Atlantic and then back to Germany along the Mediterranean.