Field notes
The RoamVitals Blog
Setup guides, sensor teardowns and what we learn taking Bluetooth devices apart so you do not have to. Written by the people decoding them.
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Finding your Victron Instant Readout key
Victron encrypts its Bluetooth broadcast per device, which is a good decision that leaves you with one thing to copy across. It takes about a minute once you know where to look.
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Flashing a Xiaomi LYWSD03MMC, start to finish
The cheapest sensor worth owning needs fifteen minutes of setup before any hub can read it. It is done from a browser, it is hard to break, and here is every step.
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What we can read from a sensor, and what we cannot
Some sensors shout their readings to anyone listening. Others hold them behind a connection, a pairing, or an encryption key. That difference decides whether a device works with us.