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This blog is all about balcony solar systems, electric cars, solar power, Bitcoin, and travel. A curated German newsletter is published at irregular intervals, providing a comprehensive overview of these topics. «German articles»
AxeCalibur: Off-Grid Solar-Bitcoin-Mining – Guide & Parts for Europe
AxeCalibur: Off-Grid Bitcoin Mining with Solar Energy Is it possible to run Bitcoin mining around the clock using solar energy? The AxeBox from 100 Acres Ranch has proven it works. In this article, I’ll introduce this DIY solution, explain why replicating it – dubbed the “AxeCalibur” – might be worthwhile, and provide a parts list for building it yourself in Europe. AxeCalibur – The Miner That Can’t Be Unplugged: Solar-Powered, Battery-Driven, 24/7 Unstoppable. ...
Buy Bitcoin or Mine It? A Plebday Experiment
Buying Bitcoin or Buying a Miner – Which Is More Worthwhile? Bitcoin (BTC) remains a hot topic in 2025. But what pays off more: buying BTC directly or investing in a Bitcoin miner like the Bitaxe Gamma? On March 21, 2025 – Plebday – I’m launching an experiment: I’ll invest €130 in Bitcoin and €130 in a Bitaxe Gamma. This article compares both approaches, and I’ll update it regularly. As something came up in my private life, I postponed the experiment by roughly a week and am starting it at the same time as Mining Disrupt, a conference on the topic of Bitcoin. ...
Mikrotik Back to Home Wireguard Setup
In a recent article I already showed the configuration of a Wireguard setup for Mikrotik routers and Android(EN) devices. With RouterOS version v7.12, this is now even easier to do, as Mikrotik has announced in a forum post the new “Back to Home VPN” feature, which builds on a standalone app for Android and iOS as support, making setup much easier. Requirements RouterOS version required: v7.12 Hardware requirements: ARM/ARM64/TILE architecture devices Packages required: routeros (Source) ...
VPN Mikrotik WireGuard Roadwarrior Setup Android
In this article, I want to share how I set up a VPN connection via WireGuard between my MikroTik router and my Android phone. This VPN connection allows me to securely access my home network from anywhere in the world. MikroTik documentation used for this guide. WireGuard VPN Setup on the MikroTik Router a) Quick & Easy (without own domain) In this quick and easy setup, the MikroTik´s own DDNS (Dynamic DNS) service is used. This can be activated in the terminal (source): ...
UPDATE: Best travel (credit) card(s) in 2023 - Barclays versus Wise
UPDATE (2024): Barclays has updated its price list with effect from 07.12.2023 and the conditions mentioned here in the article no longer match. A travel (credit) card comparison - is there only one sitting on the throne? Traveling is fun and one of the purposes of life and spending money is generally a part of it. This guidline is based on my experiences and answers the question “if there is one single best (credit) card for travelling?”. ...