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May 9, 2017 11:35
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Arduino Temperature Webserver using BLYNK + Pin7 LED
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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. | |
************************************************************* | |
Blynk using a LED widget on your phone! | |
App project setup: | |
LED widget on V1 | |
*************************************************************/ | |
/* Comment this out to disable prints and save space */ | |
#define BLYNK_PRINT Serial | |
#include <SPI.h> | |
#include <Ethernet.h> | |
#include <BlynkSimpleEthernet.h> | |
// You should get Auth Token in the Blynk App. | |
// Go to the Project Settings (nut icon). | |
char auth[] = "3dc53535d7734501b5ca0517dae0bbd3"; | |
int tempC; | |
#define W5100_CS 10 | |
#define SDCARD_CS 4 | |
WidgetLED led1(V1); | |
BlynkTimer timer; | |
// V1 LED Widget is blinking | |
void blinkLedWidget() | |
{ | |
if (led1.getValue()) { | |
led1.off(); | |
Serial.println("LED on V1: off"); | |
} else { | |
led1.on(); | |
Serial.println("LED on V1: on"); | |
} | |
} | |
BLYNK_READ(V5) // Widget in the app READs Virtal Pin V5 with the certain frequency | |
{ | |
Blynk.virtualWrite(5,tempC); | |
} | |
void setup() | |
{ | |
// Debug console | |
Serial.begin(9600); | |
pinMode(SDCARD_CS, OUTPUT); | |
digitalWrite(SDCARD_CS, HIGH); // Deselect the SD card | |
Blynk.begin(auth); | |
// You can also specify server: | |
//Blynk.begin(auth, "blynk-cloud.com", 8442); | |
//Blynk.begin(auth, IPAddress(192,168,1,100), 8442); | |
timer.setInterval(1000L, blinkLedWidget); | |
} | |
int counter=0; | |
void loop() | |
{ | |
Blynk.run(); | |
timer.run(); | |
int sensorValue = analogRead(A0); | |
float volt = (sensorValue/1024.0) * 5; | |
tempC = (volt - 0.5) * 100; | |
} |
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