Code initial version from @Wingsofcourage https://github.com/Wingsofcourage, from mariusz-ostoja-swierczynski/tech-controllers#40
Tech controllers send their status every couple of seconds to the RS port The Wemos D1 mini will receive those signals from the tech controllers Convert the signals to an internal key-value-store After a timeout (default 10s) the last received values are send to a customisable MQTT Server (ioBroker, home assistant, ... )
It might happen that the TECH device you want to connect to has 2 ports: one for controller, one for another module. The code can read UART data from 2 different ports - to gather all the data possible from both ports.
For example the room regulator's set temperature wasn't available on 'controller port' of a i-1 valve controller, but it is published and available on the 'module port' of the same i-1 valve controller.
- Wemos D1 mini
- 5V step down regulator e.g. AMS 1117 5V
- Some wire.
If you look on the RS port female: Right pin1.
PIN 2+4 GND
PIN 6 VCC 12V
PIN 3 RX
- Connect GND and VCC to the voltage regulator and RX to D1 of your Wemos D1 mini.
- Customise the settings.h
- In Arduino Studio download ArduinoMqttClient and ESP8266WiFi libs.
- Choose 160 Mhz as CPU speed for the Wemos D1 mini board from the tools menu
- Increase the buffer size in SoftwareSerial.h from 64 to 256
- Flash the code to the Wemos D1 mini with Arduino Studio.
- Connect the Wemos D1 Mini to your tech controller.
- Inspect the published MQTT messages
Have fun.
Data is read-only. It is not possible to send commands to the controller.
Can look like:
