Things used in this project


Code snippet #1Arduino
<p>#include "DHT.h"<br>//#define CAYENNE_DEBUG         // Uncomment to show debug messages<br>#define CAYENNE_PRINT Serial  // Comment this out to disable prints and save space
#include </p><p>#define DHTPIN 8     // what digital pin we're connected to
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321</p><p>#define VIRT_TEMP V1
#define VIRT_HUM V2</p><p>// Cayenne authentication token. This should be obtained from the Cayenne Dashboard.
char token[] = "your toker";</p><p>DHT dht(DHTPIN, DHTTYPE);
unsigned long prev_DHT_refresh, interval_DHT_refresh = 1000;</p><p>void setup()
  Cayenne.begin(token);</p><p>  dht.begin();
}</p><p>void loop()
{;</p><p>  getDhtValues();</p><p>}</p><p>void getDhtValues() {
    unsigned long now = millis();
  if (now - prev_DHT_refresh > interval_DHT_refresh) {
    // Reading temperature or humidity takes about 250 milliseconds!
    // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
    float h = dht.readHumidity();
    // Read temperature as Celsius (the default)
    float t = dht.readTemperature();</p><p>    // Check if any reads failed
    if (!isnan(h) && !isnan(t)) {
      Cayenne.virtualWrite(VIRT_HUM, h);
      Cayenne.celsiusWrite(VIRT_TEMP, t);
    prev_DHT_refresh = now;
Code snippet #9SH

while [ true ]; 

do filename=-$(date -u +"%d%m%Y_%H%M-%S").jpg
/opt/vc/bin/raspistill -o $SAVEDIR/$filename
sleep 3600;


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Thomas sxt
3 projects • 9 followers