#include unsigned long lastMillis = 0; void setup() { Ciao.begin(); } void loop() { //Publish data every 1 seconds (1000 milliseconds). Change this value to publish at a different interval. if (millis() - lastMillis > 1000) { lastMillis = millis(); //Write data to Cayenne here. This example just sends the current uptime in milliseconds. Ciao.write("mqtt","v1/MQTTusername/things/ClientID/data/0", String(lastMillis)); int analogValue = analogRead(A0); int gas = map(analogValue, 0, 1023, 0, 100); Ciao.write("mqtt","v1/MQTTusername/things/ClientID/data/1", String(gas)); } }