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Articles
All articles, newest first.
2025
- Hardware & Repair Defective Walter 20V Li-Ion Battery – Complete Teardown and MeasurementA 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!
- 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.