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June 22, 2020 13:53
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/************************************************************* | |
Download latest Blynk library here: | |
https://github.com/blynkkk/blynk-library/releases/latest | |
Blynk is a platform with iOS and Android apps to control | |
Arduino, Raspberry Pi and the likes over the Internet. | |
You can easily build graphic interfaces for all your | |
projects by simply dragging and dropping widgets. | |
Downloads, docs, tutorials: http://www.blynk.cc | |
Sketch generator: http://examples.blynk.cc | |
Blynk community: http://community.blynk.cc | |
Follow us: http://www.fb.com/blynkapp | |
http://twitter.com/blynk_app | |
Blynk library is licensed under MIT license | |
This example code is in public domain. | |
************************************************************* | |
This example shows how value can be pushed from Arduino to | |
the Blynk App. | |
WARNING : | |
For this example you'll need Adafruit DHT sensor libraries: | |
https://github.com/adafruit/Adafruit_Sensor | |
https://github.com/adafruit/DHT-sensor-library | |
App project setup: | |
Value Display widget attached to V5 | |
Value Display widget attached to V6 | |
*************************************************************/ | |
/* Comment this out to disable prints and save space */ | |
#define BLYNK_PRINT Serial | |
#include <ESP8266WiFi.h> | |
#include <BlynkSimpleEsp8266.h> | |
#include <DHT.h> | |
#include <Adafruit_NeoPixel.h> | |
// You should get Auth Token in the Blynk App. | |
// Go to the Project Settings (nut icon). | |
char auth[] = ""; | |
// Your WiFi credentials. | |
// Set password to "" for open networks. | |
char ssid[] = ""; | |
char pass[] = ""; | |
#define DHTPIN 14 // What digital pin we're connected to | |
// Uncomment whatever type you're using! | |
//#define DHTTYPE DHT11 // DHT 11 | |
#define DHTTYPE DHT22 // DHT 22, AM2302, AM2321 | |
//#define DHTTYPE DHT21 // DHT 21, AM2301 | |
DHT dht(DHTPIN, DHTTYPE); | |
BlynkTimer timer; | |
#define PIN 4 | |
#define NUMB_PIXEL 4 | |
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUMB_PIXEL, PIN, NEO_GRB + NEO_KHZ800); | |
// Input a value 0 to 255 to get a color value. | |
// The colours are a transition r - g - b - back to r. | |
uint32_t Wheel(byte WheelPos) { | |
if (WheelPos < 85) { | |
return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); | |
} else if (WheelPos < 170) { | |
WheelPos -= 85; | |
return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3); | |
} else { | |
WheelPos -= 170; | |
return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3); | |
} | |
} | |
BLYNK_WRITE(V1) | |
{ | |
int shift = param.asInt(); | |
for (int i = 0; i < strip.numPixels()-1; i++) | |
{ | |
// strip.setPixelColor(i, Wheel(shift & 255)); | |
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + shift) & 255)); | |
} | |
strip.show(); | |
} | |
// This function sends Arduino's up time every second to Virtual Pin (5). | |
// In the app, Widget's reading frequency should be set to PUSH. This means | |
// that you define how often to send data to Blynk App. | |
void sendSensor() | |
{ | |
float h = dht.readHumidity(); | |
float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit | |
if (isnan(h) || isnan(t)) { | |
Serial.println("Failed to read from DHT sensor!"); | |
return; | |
} | |
// You can send any value at any time. | |
// Please don't send more that 10 values per second. | |
Blynk.virtualWrite(V5, h); | |
Blynk.virtualWrite(V6, t); | |
} | |
void setup() | |
{ | |
// Debug console | |
Serial.begin(9600); | |
Blynk.begin(auth, ssid, pass); | |
// You can also specify server: | |
//Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80); | |
//Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080); | |
dht.begin(); | |
strip.begin(); | |
strip.show(); | |
// Setup a function to be called every second | |
timer.setInterval(1000L, sendSensor); | |
} | |
void loop() | |
{ | |
strip.clear(); | |
Blynk.run(); | |
timer.run(); | |
} |
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