I have an Ethernet connected Arduino with a Freetronics relay8 shield. Whenever the Arduino changes a relay status it sends the status of all relays to Openhab2 as separate MQTT messages. 8 relay status messages are sent to the MQTT broker (one message per relay), they are all sent with the same t…

Finally SOLVED thanks for the tips state update on app en button and no pressing 2 times yet another sleepless night spared here is the code for those who would like it arduino callback if (content == “kkn3_on”) {relay3Value = HIGH; state3 = 1;} if (content == “kkn3_off”) {relay3Value = LOW;…