Skip to the card

Card 799 of 9802026-09-27 issue

Observed arrival · 2026-09-27

Signal Chain: an engineer’s instrument log

signal-chain.tech Visit website
Editorial interest 78/100 Selection signal · not a rating of the site

An RF and embedded-instrumentation engineer documents hardware, firmware, and signal-processing projects, including tools for VLF lightning detection.

Landing page captured for the 2026-09-27 issue.
For
RF and embedded-instrumentation engineers
Worth noticing
The project list spans a three-channel GNSS-timed acquisition unit and PPS timing comparisons at nanosecond resolution.

Field notes

The project index connects measurement hardware to its intended field use: one acquisition unit is described as the core of a VLF lightning direction-finding station. Other entries cover real-time dual-channel VLF acquisition and a web-based ground-station digital twin for ionospheric TEC measurements. The author’s latest listed log entry describes an initial attempt to pull raw waveforms from a Hantek oscilloscope into Python.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade

One card from the complete issue

Nostalgia for an Imaginary Console

276,168 arrived 1,000 judged 980 catalogued Enter the complete issue
signal-chain.tech

Landing page observed 2026-09-27. The live site may have changed.