Replied to 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…

2 weeks ago

Replied to ESP8266 as a local MQTT broker so the sensors keep working when the internet drops?

Personally I wouldn't put the one piece that must stay up on the weakest chip in the building. But curious what others did.

2 weeks, 4 days ago

Replied to 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…

4 weeks ago

Replied to Twenty DS18B20 probes on one Pi: dropouts past eight sensors and how to name the keys

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.…

4 weeks, 1 day ago

Replied to Trailer tracker on a NodeMCU: map card says no rows with valid coordinates

Those are strings, and two decimals. Is that on purpose?

1 month, 1 week ago

Replied to 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.

1 month, 1 week ago

Replied to Switching a server room split AC off and on from Hermetry with a 16 A plug relay

Separate point from the HVAC side. That plug sits in your server room and can switch a load there, so treat it like any…

1 month, 3 weeks ago

Replied to ESP8266 intercom buzzer detector: how do I get a ping on my phone?

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…

2 months ago