Archive
IIoT
Industrial IoT, MQTT, Sparkplug, UNS
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The TV That Would Not Stay on the IoT VLAN: A Lesson in Network Enforcement
My Samsung Frame TV kept wandering off the IoT VLAN onto the Default network — a perfect example of why SSID-based isolation is a fragile illusion. Here’s how I diagnosed the firmware-driven roaming behavior and why real network…
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The Meter Was Already Broadcasting: Reading Gas Usage Off the Air
A $30 software-defined radio, an antenna, and an SCM+ decoder — reading the number a utility meter already shouts over 900 MHz several times an hour, instead of photographing its dials. Protocol notes and the current state of…
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Teaching a Camera to Read a 60-Year-Old Gas Meter
I built a computer vision pipeline that reads my outdoor gas meter from a photograph — four alternating-direction dials, ORB alignment for a future drone, and a philosophy of failing honestly instead of guessing.