This presentation describes the Steps to be done in Arduino IDE & Monitoring the sensor values in blynk app. Program given

1. LECTURE 4
STEPS TO BE DONE IN ARDUINO IDE
FOR MONITORING SENSOR VALUES
RESULT

2. To use node- MCU board in Arduino IDE,
It is necessary to do the following 4 steps.
Then in step 5 & 6 setup is configured for node
MCU and Blynk App

3. STEP 1
Download Arduino IDE based on your Operating system from the link
https://www.arduino.cc/en/main/software
and install it as the normal software

4. Check
Open the Arduino IDE. connect the node MCU board to the laptop .
Go to tools port & check some port is selected as shown . It should be
automatically selected.

5. STEP 2
Open the Arduino IDE and go to File  Preferences.
In Additional Board Manager URL field add the following address.
http://arduino.esp8266.com/stable/package_esp8266com_index.json

6. STEP 3
Go to Tools Boards  Board manager and select “esp8266 by ESP8266
Community” and click the Install button. (It will take some time to download. Please
wait). You will be seeing the word installed next to it.
Once Completed you can
see INSTALLED as
shown

7. Choose the Board
Go to Tools Board and select NodeMCU 0.9/1.0.

8. STEP 4
Go to Tools upload speed and select 115200.

9. STEP 5
Once completing the above 4 steps, copy the “Program” and paste in IDE
The “program ” uses the Blynk library So,
i) Download Blynk library from the following URL
https://github.com/blynkkk/blynk-library/releases/tag/v0.5.2
ii) Then, in arduino IDE go to Sketch Include Library  Add Zip Library and select
the downloaded zip file.
iii) Finally, In “PROGRAM 1” change the “authorized token”, “WiFi user name” and “WiFi
password” to yours
char auth[] = "4042a240e2ea48bea5ffeeadb13eb715"; // Your token number sent to your email
char ssid[] = "Moto C Plus 2634"; // your Wi- Fi User name
char pass[] = "password"; //your Wi-Fi Password

10. FINAL STEP
Once done upload it to the node MCU by clicking upload button

11. CONGRATULATIONS!
YOU HAVE DONE
THE STEPS TO BE DONE IN ARDUINO IDE

12. IT’S TIME FOR ACTION!

13. Check: Ensure that Wi- Fi and internet connection
in your PC/ smartphone are working properly.

14. Once uploaded the program in node MCU, click play button in
Blynk App

15. RESULT
Now, You can see the real time sensor value in GAUGE
voltage = sensor value * (3.3/1024)
milli-volt = sensor value *
(3.3/1024)*1000
Example
milli-voltage =
131* (3.3 /1024)*1000 = 422 mV =
42.2 deg C

16. If you see the above result then GOAL 1 is
achieved!!!

17. Lets interpret the program#define BLYNK_PRINTSerial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
char auth[] = “type authorized token sent to your mail id ";
char ssid[] = “type Wifi User Name here";
char pass[]= “Type Wifie password here";
BlynkTimer timer;
void myTimerEvent()
{.
float sensor=analogRead(A0);
Blynk.virtualWrite(V5,sensor);
}
void setup()
{
Serial.begin(9600);
Blynk.begin(auth, ssid, pass);
timer.setInterval(1000L, myTimerEvent);
}
void loop()
{
Blynk.run();
timer.run();
}