Monthly Archives: May 2022

Do flat tyres make your speedo lie? (Part 2)

OK, I decided to do a bit more testing, using the CANBUS data of the car, given that a few people have pointed out that “Indirect TPMS” (Tyre Pressure Monitoring Systems) exist, and use the ABS wheel encoders to infer … Continue reading

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Do flat tyres make your speedo lie?

This is a question that I’ve seen debated a few times, both in person and on the internet. It’s not quite in the same league as the immortal argument starter “airplane-on-a-treadmill”, but it has many of the same features. To … Continue reading

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Display box for a KP1-4 High Voltage Variable Cap

I was recently at the Central Coast Amateur Radio Club’s annual get together. And I saw this beautiful glass vacuum tube there. It’s a vintage Russian KP1-4 high voltage capacitor. Basically two metal plates in a vacuum separated from each … Continue reading

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