Luca Bolanz
Technical notes from infrastructure, homelab and workbench.
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Things I build, run, measure – and sometimes break. Written down so others (and future me) can learn from them.
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Hardware & Repair
Defective Walter 20V Li-Ion Battery – Complete Teardown and Measurement
A Walter 20V battery from the hardware store suddenly refused to charge. I took it completely apart, measured every single cell, and show you step by step what’s inside and why it failed. Warning: Do NOT attempt this yourself!
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- RF & Meshtastic Getting Started with Meshtastic: Antenna SelectionIn this post, I test four 868 MHz LoRa antennas (ZIISOR, SMA-Male Rubber, CDEBYTE, Alfa) with the LiteVNA and compare their SWR values, specifications, and use cases.
- RF & Meshtastic Getting Started with Meshtastic: Your First Steps in Device SelectionA practical guide for beginners in Meshtastic – I share my experiences with various devices, from ESP32 to NRF52, and help you with the decision.
- RF & Meshtastic Pixelure Whip Antenna ReviewI measured all five antennas from a cheap "10 dBi" 868 MHz whip set on a LiteVNA. Three of them resonate at 344 MHz – none reach a good SWR at 868 MHz.
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Homelab
Proxmox, Docker, self-hosting – how my homelab is built and run.
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Linux
Server and desktop Linux from daily use: Fedora, Ubuntu Server, hardening and operations.
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Networking
VLANs, firewalls, DNS and VPN – with OPNsense, Pi-hole and WireGuard.
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Security
Hardening, monitoring and SIEM – what actually helps in practice.
0 articles
RF & Meshtastic
LoRa, Meshtastic and antennas – with real measurements on a LiteVNA.
3 articles
Hardware & Repair
Teardowns, measurements and repairs on the workbench.
1 articles