johnsonsec
@brian-johnson · Membre depuis avril 2026
IT and security admin · software · 20 years in the field
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Réponses à ESP32-WROOM vs WROVER vs MINI: what do the module names mean and which do I buy?
As far as I know Espressif has never officially said what WROOM stands for, so don't trust the three answers you found. In practice…
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Personally I wouldn't put the one piece that must stay up on the weakest chip in the building. But curious what others did.
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Réponses à Total beginner from New Zealand, workshop sensors
Another Kiwi here. Cable already run to the workshop is a good start, plenty of people would love that. Buy two of whatever sensor…
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Réponses à Vingt sondes DS18B20 sur un seul Pi : pertes au-delà de huit capteurs et comment nommer les clés
One small thing while you're in there: put the device token in a file only your service user can read, not in the script.…
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Réponses à Traceur de remorque sur NodeMCU : le widget carte indique aucune ligne avec des coordonnées valides
Those are strings, and two decimals. Is that on purpose?
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Réponses à Sensors on campus lamp posts with no wiring, can we power them wirelessly?
Wireless power works over centimetres (phone chargers). Over metres you get microwatts and terrible efficiency. Your owner saw a demo.
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Separate point from the HVAC side. That plug sits in your server room and can switch a load there, so treat it like any…
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The mobile app brings notifications to phones, for whoever installs it. For the rest it's the bell in the browser, e-mail, chat apps an…

