// This example shows how to connect Sharp GP2Y1010AU0F to Cayenne using a WiFi 101 shield and send/receive sample data. //#define CAYENNE_DEBUG #define CAYENNE_PRINT Serial #include // WiFi network info. char ssid[] = "ssid"; char wifiPassword[] = "wifiPassword"; // Cayenne authentication info. This should be obtained from the Cayenne Dashboard. char username[] = "MQTT_USERNAME"; char password[] = "MQTT_PASSWORD"; char clientID[] = "CLIENT_ID"; unsigned long lastMillis = 0; int measuringPin = A0; int ledPin = 2; const int timeMeasuring = 280; const int timeStabilization = 40; const int timeSleep = 9680; float voltageAnalog = 0; float voltageConversion = 0; float dustiness = 0; void setup() { Serial.begin(9600); Cayenne.begin(username, password, clientID, ssid, wifiPassword); pinMode(ledPin,OUTPUT); } void loop() { Cayenne.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. Cayenne.virtualWrite(0, lastMillis); digitalWrite(ledPin,LOW); delayMicroseconds(timeMeasuring); voltageAnalog = analogRead(measuringPin); delayMicroseconds(timeStabilization); digitalWrite(ledPin,HIGH); delayMicroseconds(timeSleep); voltageConversion = voltageAnalog * (4.7 / 1024.0); //Voltage on 5V pin on Arduino, My voltage is 4.7 V dustiness = (0.17 * voltageConversion - 0.1)*1000; Cayenne.virtualWrite(1, dustiness, "pm", "mg"); } } //Default function for processing actuator commands from the Cayenne Dashboard. //You can also use functions for specific channels, e.g CAYENNE_IN(1) for channel 1 commands. CAYENNE_IN_DEFAULT() { CAYENNE_LOG("CAYENNE_IN_DEFAULT(%u) - %s, %s", request.channel, getValue.getId(), getValue.asString()); //Process message here. If there is an error set an error message using getValue.setError(), e.g getValue.setError("Error message"); }