ESP8266-12 standalone blynk lm35 temperature sensor

new project using a esp8266-12 standalone with a temperature sensor LM35
I just published my project on instructable
ESP8266-12 blynk wireless temperature LM35 sensor



VCC +3,3v

CH-PD +3.3v

ADC ---- pin2 (LM35)

GND ground

GPIO5 ground

LM35 sensor

pin 1 +3,3v

pin 2 output .---- ADC (ESP8266-12)

pin 3 ground


If you use ide arduino ADC ---- pin 17

#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "xxxxxxxxx"; //insert here your token generated by Blynk

float temp;
int tempPin = 17; // ADC pin

SimpleTimer timer;

void setup()
  Serial.begin(9600); // See the connection status in Serial Monitor
  Blynk.begin(auth, "ssid", "password!"); //insert here your SSID and password

  // Setup a function to be called every second
  timer.setInterval(1000L, sendUptime);

// 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 sendUptime()
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(10, temp); // virtual pin 10

void loop()
{; // Initiates Blynk; // Initiates SimpleTimer
   temp = analogRead(tempPin);
   temp = temp * 0.09765625; // costance (1/1024*100)