Archive

Browse all posts by month and year.

August 2023

• Großes Update für das Infraschallmikrofon mit Sensirion SDP600-25Pa
• Getting precise NTP synchronized microsecond timestamps using ESP-IDF and ESP32

February 2023

• Infraschallmessungen mit einem Sensirion SDP600-25Pa

December 2022

• Using an ESP32 with ESP-IDF to push data into a InfluxDB using HTTP or HTTPS

September 2022

• Flashing the (tru)SDX firmware using Linux
• Ultralight Dipole for 15m
• Having a closer look at a 10 Watt SMA DC-6GHz 50 Ohm load from Aliexpress
• Analysis of the Aliexpress FBP-144 BPF for the 2m band
• Splitable 12-El. 23cm Yagi from the eBay store 'wlan-antenne'
• LiteVNA sweep of the 2-El. 23cm Yagi from SG-Labs

August 2022

• Listening to 10GHz Rain Scatter in Esslingen using a LNB
• Watching HF band activities using Grafana

July 2022

• High IO-Wait and lags under Linux after wiping SSD
• Building an efficient End-Fed Half Wave transformer using special Ferrite 2643625002 from Fair-Rite

June 2022

• Useful, affordable tools for daily embedded development tasks
• Minimal ESP-IDF Modbus TCP example
• ESP-IDF v4.4.1 is having a faulty OpenOCD and hidden Python 2 dependency coming from GDB

January 2022

• Running a stratum 2 NTP server for ntppool.org on a VPS

October 2021

• Eine kompakte Empfangsbox für RS41-Wettersonden und LoRa-APRS

September 2021

• Auf der Suche nach RS41 Wettersonden des DWD mit Sondehub, AWS S3 und Python

August 2021

• Working portable from the western coast of Spain
• Winter/Autumn 2020: Working portable from Esslingen
• My 2m OpenWebRX Station for automatic FT8/QT65/J65/WSPR/APRS decoding
• Icom IC-705 QRM caused by USB CAT control
• Finding good ham radio portable spots using OpenstreetMap and Overpass Turbo
• Rhein/Ruhr/Ahrbruck Hochwasser 2021 - Sentinel-1 SAR-Satellitenbilder der Überschwemmungsgebiete
• On LiFePo4 Batteries
• 15V as shack voltage?