ATC_MiThermometer
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atc1441
Longer BLE range?
I found in the source that rf_set_power_level_index sets a fixed hard-coded value. According to this document, it corresponds to about 7.425 mA. It would be totally fine for me to increase this to the max (20 mA) and increase the interval between advertisments to 5 minutes or even longer, as it would be logged by home-assistant anyway. The question is, how much range could I gain by doing this? Is it worth it?
Don't forget that the device will send every x seconds anyway an advertising package so that it could be visible (used for scanning etc.) The provided "advertising time" here is only for advertising changed values in package.
So I think your battery could be empty fast...
BTW: what range do you need there?
An option would be to only set the TX power high every x minutes
Then it would not increase the drain a lot
I am trying to cover more sensors with a single esp32 in the house. The reception is lost over 10 meters or just in the next room. Uploaded a firmware into one with max strength and currently testing it.
It is either placebo or not working. I think it might reach a few meters further in the next room. But only detectable with my notebook, the esp thingy is too weak.
Try to use ESP32 with OpenMQTTGateway as sample - I have no problems at same floor, also from basement I receive data. (using ESP32 dev board)
You could also try a Raspberry PI Zero W. This model has a very far bluetooth range.
You could also try a Raspberry PI Zero W. This model has a very far bluetooth range.
@JsBergbau have you done this? could you point me to a project/guide showing how to setup a PiZeroW with wifi and ble gateway to mqtt or HA?
@marc-gist you can use RPIEasy as sample. https://github.com/enesbcs/rpieasy
But with ESP32 and OpenMQTTGateway it is working also very well. https://github.com/1technophile/OpenMQTTGateway
Hi @marc-gist,
you setup a RPI with RPI-OS, I recommend lite version for PI-Zero W. Just flash it to an SD Card, put the wpa_supplicant.conf into boot partition like described here https://www.raspberrypi.org/documentation/configuration/wireless/headless.md and add a file "ssh" without file extension. After that you boot your RPI-Zero W and can access it via Wifi without monitor and keyboard.
After that you install git by sudo apt install git and then you execute git clone https://github.com/JsBergbau/MiTemperature2 chmod +x *.sh chmod +x LYWSD03MMC.py Please look at the https://github.com/JsBergbau/MiTemperature2/blob/master/README.md of how to install the other requirements. After that you execute in the folder with ./LYWSD03MMC.py --atc --watchdogtimer 5 --callback sendToMQTT.sh You must adapt the sendToMQTT.sh for your needs, but it should be quite easy. Just read the https://github.com/JsBergbau/MiTemperature2/blob/master/README.md I hope that everything is well documentated.
With that script you can also enable "roaming" with multiple receivers.
An option would be to only set the TX power high every x minutes
Then it would not increase the drain a lot
Is it somehow possible with the custom firmware ?
