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I/O Bordas with TASMOTA

Build

https://www.ratzownal.de/wie-komiliere-ich-die-tasmota-firmware/

Flush

https://www.az-delivery.de/en/products/usb-adapter-fur-esp8266-01?ls=de https://www.ratzownal.de/wie-flashe-ich-tasmota-auf-den-esp-01/

Configure

Relais Board I/O

https://www.ei-ot.de/2025/01/27/tasmota-2-kanal-relais-modul-konfigurieren/?srsltid=AfmBOoqFtrLwJ7M3Er7KP3ILVZdLt3hvLbsOSvAqX2jKc-PwJvdoOxvp

Relais Board serial

https://tasmota.github.io/docs/devices/LC-Technology-WiFi-Relay/#lc-technology-wifi-relay-single-relay

DollaTek 5V ESP8266 ESP-01 2-Kanal-WiFi-Relaismodul

Modul: https://amzn.eu/d/e7EBxtd Für dieses Modul funktioniert das (mit baudrate 115200) https://templates.blakadder.com/LC-Relay-ESP01-2R-5V.html

MQTT Topic Name

%prefix%/%topic%/

where topic is configured and prefix is a key part of the topic structure, typically consists of three prefixes:

cmnd for commands
stat for status updates
tele for telemetry sensor data

Usage via MQTT

Assuming topic ist configured to bbqlight.

Switch via MQTT

mosquitto_pub -t bbq_cmnd/bbqlight/POWER0 -m TOGGLE mosquitto_pub -t bbq_cmnd/bbqlight/POWER0 -m ON mosquitto_pub -t bbq_cmnd/bbqlight/POWER0 -m OFF

State via MQTT

We have to read this two topics

stat/bbqlight/POWER -> for state change tele/bbqlight/STATE -> for cyclic state updates

homectld Interface

For communication with the homectld the MQTT interface of TASMOTA is used. The TASMOTA messages has to be converted to format expectet by the homectld. A therefore the MQTT message converter scripts at /etc/homectld/mqtt.d/ can be used. The script has to be named like the topic written by TASMOTA where / has to be replaced by an underline character. Example:

Topic                 Converter Script Name
stat/bbqlight/POWER   stat_bbqlight_POWER.sh

As an example for a simple TASMOTA switch (light,relais, ...) you find a example in the source tree:

configs/mqtt.d/stat_bbqlight_POWER.sh
configs/mqtt.d/tele_bbqlight_STATE.sh

As a example for a sensor with more values:

configs/mqtt.d/tele_tasmota_SENSOR.sh

If a converter is to be used for multiple topics, this can be mapped using symbolic links.