Low Power Wireless Sensor and Gateway using Node-RED

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21

Definitely something has improved. I have 3 x esp32 - one on each floor - the one on the top floor (which is probably 3 solid walls (besser block) and 50 metres away from my swimming pool - still picks up beacons from our solar pool cleaner !!

Our house has all internal solid block walls and each floor has 6 of the sensors with a central esp32 - the esp32 on each floor have no problems talking to the sensors continually on their floor and see 80% of the traffic from the ones not on their floor also

Give it a try you will be surprised

Craig

22

To give you one more example, Apple's AirTag uses Nordic's nrf52832, a popular low cost BLE chip.
BLE is everywhere nowadays.

23

If you want to do serious BLE, forget about ESP32 series, its power consumption is way too high.

24

I am using them as the central catcher of esp32 beacons - so they are always plugged in.

Craig

25

That makes sense :grin:

You may use a cell battery such as CR2032 for beacons with a BLE chip. The battery can last several years.

26

Yep - mine are pre-made XIAOMI beacons so come setup with LCD screen and hence use a AAA
battery

Craig