Hi everyone
I´m developing a project that´s consist on automating a greenhouse ,i´m new at this and i start exploring cayenne one week ago and so far i was able to control temperature and humidity and luminosity through a dht11 sensor and a ldr sensor but now i was starting to explore lighting up a led by clicking a button but when i click it doesn´t light up and after a while it lights itselfs and shut down it self, but if i put it individually it works perfectly and i can put it on and off corectly. I can´t understand where is the problem . Can someone help me please ?? Thanks
Hello,
Can you please provide more information about the board and devices that you are using. Also some code to provide? I am also making an greenhouse automation and I have implemented all the functionalities that you have listed.
Yes sure I´m using a dht11 sensor to read temperature and humidity and a ldr sensor, i´ve created 4 virtual pins two for showing the value and another two to show the graphs. But after that i wanted to try turn on a led when the temperature reaches 30º so i created a new widget that is a button to turn on and off the led connected to the port 8. Below is the code i use.
//--------------------------------------------------------------------------->>>>>>>>>>>>>>>>>>>>>>>
#include <dht.h>
#define CAYENNE_DEBUG // Cayenne Code Uncomment to show debug messages
#define DHT11_PIN A1 // what digital pin we're connected to
#define CAYENNE_PRINT Serial // Cayenne Code Comment this out to disable prints and save space
#include <CayenneEthernet.h> // Cayenne Code Change this to use a different communication device. See Communications examples.
char token[] = "dr1fhuithq";
dht DHT;
#define VIRTUAL_PIN V1
#define VIRTUAL_PIN V2
#define VIRTUAL_PIN V3
#define VIRTUAL_PIN V4
void setup() {
Serial.begin(9600);
Serial.println("DHTxx test!");
Cayenne.begin(token);
DHT.temperature = 0;
}
void loop() {
int chk = DHT.read11(DHT11_PIN);
Cayenne.run();
// Wait a few seconds between measurements.
delay(5000);
float t = DHT.temperature;
float h = DHT.humidity;
if (isnan(t) || isnan(h)) {
Serial.println("Failed to read from DHT sensor!");
return;
}
Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" %\t");
Serial.print("Temperature: ");
Serial.print(t);
delay(10);
}
CAYENNE_OUT(V1)
{
Cayenne.virtualWrite(V1, DHT.temperature);
}
CAYENNE_OUT(V2)
{
Cayenne.virtualWrite(V2, DHT.humidity);
}
CAYENNE_OUT(V3)
{
Cayenne.virtualWrite(V3, DHT.temperature, TEMPERATURE, CELSIUS);
}
CAYENNE_OUT(V4)
{
Cayenne.virtualWrite(V4, DHT.humidity);
}
Okey, can you just send the code in .txt file. I will modify it for you and then tell you on which port to plug the switch and how to add it in Cayenne ?
How can i send it to you in text file ?
You can just drag it to the edit window like this.
secret.txt.txt (6 Bytes)
The file only says secret inside.
I saw that you have edited your post. I will give you new source code to test. I will post it later when i get back 
Okey, here is the code:
I define digital pin number 8 to connect your led (you can change it but don’t use 1 or 2!! ).
After that you can add custom widget (actuator to virtual pin 5) to trigger on/off your led. Please test it and if everything is ok we can make to turn this led on at 30 degrees by two ways
-
Adding a trigger in cayenne
-
Hardcode it in arduino sketch
#include <dht.h>
#define CAYENNE_DEBUG // Cayenne Code Uncomment to show debug messages
#define DHT11_PIN A1 // what digital pin we’re connected to
#define CAYENNE_PRINT Serial // Cayenne Code Comment this out to disable prints and save space
#include <CayenneEthernet.h> // Cayenne Code Change this to use a different communication device. See Communications examples.
char token = “dr1fhuithq”;
dht DHT;
#define VIRTUAL_PIN V1
#define VIRTUAL_PIN V2
#define VIRTUAL_PIN V3
#define VIRTUAL_PIN V4
#define LED_VIRTUAL_PIN V5
#define LED_DIGITAL_PIN 8
void setup() {
Serial.begin(9600);
Serial.println(“DHTxx test!”);
Cayenne.begin(token);
DHT.temperature = 0;
}
void loop() {
int chk = DHT.read11(DHT11_PIN);
Cayenne.run();
// Wait a few seconds between measurements.
delay(5000);
float t = DHT.temperature;
float h = DHT.humidity;
if (isnan(t) || isnan(h)) {
Serial.println(“Failed to read from DHT sensor!”);
return;
}
Serial.print(“Humidity: “);
Serial.print(h);
Serial.print(” %\t”);
Serial.print("Temperature: ");
Serial.print(t);
delay(10);
}
CAYENNE_OUT(V1)
{
Cayenne.virtualWrite(V1, DHT.temperature);
}
CAYENNE_OUT(V2)
{
Cayenne.virtualWrite(V2, DHT.humidity);
}
CAYENNE_OUT(V3)
{
Cayenne.virtualWrite(V3, DHT.temperature, TEMPERATURE, CELSIUS);
}
CAYENNE_OUT(V4)
{
Cayenne.virtualWrite(V4, DHT.humidity);
}
CAYENNE_IN(V5) {
int enabled = getValue.asInt();
if (enabled == 1) {
digitalWrite(LED_DIGITAL_PIN, HIGH);
}
else {
digitalWrite(LED_DIGITAL_PIN, LOW);
}
}
Hi
It does not work but i realise i can just code it on the arduino because it´s simplier and use cayenne just to show values. Thanks anyway for your time and sorry for something
Yes, It does not work because I forgot to add the specification of the pin that needs to be output. Can you please add this code in the void setup fragment:
pinMode(LED_DIGITAL_PIN, OUTPUT);
yes i had and its still doesn´t work but dont worry I will only use cayenne for showing values. Thanks anyway
Seems strange… Yes but I is still good to use the full functionalities of Cayenne. Yes I agree that right now is a Cloud based solution but soon it will be available also in offline mode I believe