Project status: "finalized"
A simple project that monitors the softener salt level in my water-softening system.
To avoid measurement fails caused by humidity i used the following distance sensor from Benewake.
The Benewake TF-Luna
(PinOut TF-Luna Module)
Software
To not having to recompile the program every time parameters are changed, I have implemented a config web interface where the most important parameters can be easily changed.
The Wifi interface is off in normal operation and is activated by pressing a button.
It makes a Wifi access point “ConfigESP32” on which the interface can then be reached via http:/192.168.123.1/
It is important to format the EEprom memory after loading the firmware!
Sourcecode can be downloaded in the download section->
>> Download Sourcecode here <<
Requires
Arduino IDE 2.3.3 and following libraries
* The for the Arduino IDE 2 modified KNX-Stack from Thorsten Gering
https://github.com/thernst-de/arduino-tpuart-knx-user-forum.git
Save the KnxTpUart Folder in your library folder (in most cases it is C:UsersUSERNAMEDocumentsArduinolibraries)
* Arduino library for Benewake TFMini-Plus distance sensor in I2C mode
Compatible with TFMini-S and TFLuna (in UART), but *not* with TFMini.
https://docs.arduino.cc/libraries/tfmpi2c/
Wiring
Note:
In this setup the ESP32-KNX board cannot supplied via KNX-BUS voltage. The Sensor needs to much power and the board will reset if you press the wifi-config-button.
You need to have an external powersuply (5V DC) here.
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