How do I set up the Blynk app for this project?

Create a new project, select NodeMCU and WiFi connection, copy the auth token from email, add four buttons, and assign pins D1 through D4.

What board manager URL is needed in Arduino IDE?

Paste http://arduino.esp8266.com/stable/package_esp8266c... into File > Preferences > Additional Board Manager URLs.

Which library must be installed for Blynk?

Install Blynk by volodysmr shymansky via Sketch > Include Libraries > Manage Libraries.

How do I configure the board in Arduino IDE?

Select Tools > Board > NodeMCU V1.0 (ESP8266-12E) and Tools > Programmer > Arduino ISP before uploading.

What changes are required in the provided code?

You must update the SSID and password of your network and paste the authentication token received via email.

Which pins connect the NodeMCU to the relay inputs?

Connect D1 to IN1, D2 to IN2, D3 to IN3, and D4 to IN4 of the relay board.

What power supply is recommended for the relay board?

A 5V power supply with 1 Amp capacity is required.

NODEMCU 1.0 (ESP8266) CONTROLLED RELAY USING BLYNK (OVER THE WEB)

Contents hide

1 Summary of NODEMCU 1.0 (ESP8266) CONTROLLED RELAY USING BLYNK (OVER THE WEB)

1.1 Parts used in the NodeMCU Relay Control Project:

2 Step 1: THE THINGS YOU WILL NEED

3 Step 2: THE BLYNK APP

4 Step 3: PROGRAMMING THE NODE MCU

5 Step 4: SOLDERING THE WIRES

6 Quick Solutions to Questions related to NodeMCU Relay Control Project:

Summary of NODEMCU 1.0 (ESP8266) CONTROLLED RELAY USING BLYNK (OVER THE WEB)

This article is a step-by-step guide by P Steven Lye Jyothi on controlling four relays using a NodeMCU ESP8266-12E and the Blynk app over the internet. The process involves setting up the Blynk project, configuring Arduino IDE with necessary libraries, uploading custom code to the NodeMCU, and soldering connections between the microcontroller and a 4-channel relay board.

Parts used in the NodeMCU Relay Control Project:

NodeMCU ESP8266-12E
4CH Relay Board
Wires
5V Power Supply 1Amp
Soldering Iron
Android Device with Internet
PC with Internet
Blynk App

HI GUYS MY NAME IS P STEVEN LYLE JYOTHI AND THIS IS MY FIRST INSTRUCTABLE ON HOW TO CONTROLL RELAYS BY NODEMCU ESP8266-12E VIA BLYNK THROUGH THE INTERNET

SO LETS GET STARTED

SORRY FOR MY BAD ENGLISH

Step 1: THE THINGS YOU WILL NEED

1. NODEMCU ESP8266-12E (http://www.ebay.in/itm/Amica-NodeMcu-Lua-ESP8266-C…)

2. 4CH RELAY (http://www.ebay.in/itm/4-Channel-Relay-Board-Modul…)

3. SOME WIRES

4. 5V POWER SUPPLY 1AMP

5.SOLDERING IRON

6.ANDROID DEVICE WITH INTERNET

7.PC WITH INTERNET

8.BLYNK APP (https://play.google.com/store/apps/details?id=cc.b…)

Step 2: THE BLYNK APP

OPEN THE BLYNK APP

1. CLICK ON CREATE NEW PROJECT

2.NOW SELECT BOARD NODEMCU =>CONNECTION WIFI (YOU WILL GET A AUTH TOKEN TO YOUR EMAIL COPY THE TOKEN AND KEEP ASIDE YOU WILL NEED THE TOKEN WHILE WRITING THE CODE IN ARDUINO)

3.NOW CLICK ON THE (+) ICON

4.NOW SELECT BUTTON

5.ADD UPTO FOUR BUTTONS

6. NOW SELECT EACH BUTTON AND CHANGE PIN TO THE FOLLOWING

BUTTON 1 (D1) / BUTTON 2 (D2) /BUTTON 3 (D3) / BUTTON 4 (D4)

Step 3: PROGRAMMING THE NODE MCU

DOWNLOAD ARDUINO

STEP1.OPEN ARDUINO

STEP2. GO TO FILE=>PREFERNCES=>ADDITIONAL BOARD MANAGERS URL=>PASTE THIS LINK(http://arduino.esp8266.com/stable/package_esp8266c…)

STEP3.GO TO TOOLS=>BOARDS=>BOARD MANAGER

NOW IN BOARD MANAGER SEARCH “ESP8266”

YOU WILL GET “esp8266 by ESP8266 COMMUNITY” IN THE LIST

INSTALL THE LATEST VERSION IN MY CASE V2.3.0

STEP4. 1.GO TO SKETCH=>INCLUDE LIBRARIES=>MANAGE LIBRARIES

2.NOW IN MANAGE LIBRARY SEARCH “BLYNK”

3.AND INSTALL THE “Blynk by volodysmr shymansky”

STEP5. NOW GO TO TOOLS=>BOARD=>NODEMCU V1.0 (ESP8266-12E)

NOW GO TO TOOLS=>PROGRAMMER=.ARDUINO ISP

STEP6. UPLOAD THIS (https://github.com/stevenchanti/P.STEVEN-LYLE-JYOT…) CODE TO YOUR NODEMCU

===================================================================================

YOU HAVE TO CHANGE SOME THINGS IN CODE LIKE SSID AND PASSWORD OF YOUR NETWORK AND PASTE YOUR AUTHENTICATION TOKEN WHICH YOU GOT IN EMAIL

Step 4: SOLDERING THE WIRES

SOLDER THE VIN OF THE NODEMCU TO THE VCC OF THE RELAY BOARD

SOLDER THE GND OF THE NODEMCU TO THE GND OF THE RELAY BOARD

SOLDER THE D1 OF THE NODEMCU TO THE IN1 OF THE RELAY BOARD

SOLDER THE D2 OF THE NODEMCU TO THE IN2 OF THE RELAY BOARD

SOLDER THE D3 OF THE NODEMCU TO THE IN3 OF THE RELAY BOARD

SOLDER THE D4 OF THE NODEMCU TO THE IN4 OF THE RELAY BOARD

Source: NODEMCU 1.0 (ESP8266) CONTROLLED RELAY USING BLYNK (OVER THE WEB)

Quick Solutions to Questions related to NodeMCU Relay Control Project:

How do I set up the Blynk app for this project?
Create a new project, select NodeMCU and WiFi connection, copy the auth token from email, add four buttons, and assign pins D1 through D4.
What board manager URL is needed in Arduino IDE?
Paste http://arduino.esp8266.com/stable/package_esp8266c... into File > Preferences > Additional Board Manager URLs.
Which library must be installed for Blynk?
Install "Blynk by volodysmr shymansky" via Sketch > Include Libraries > Manage Libraries.
How do I configure the board in Arduino IDE?
Select Tools > Board > NodeMCU V1.0 (ESP8266-12E) and Tools > Programmer > Arduino ISP before uploading.
What changes are required in the provided code?
You must update the SSID and password of your network and paste the authentication token received via email.
How should the VIN pin be connected?
Solder the VIN of the NodeMCU to the VCC of the relay board.
Which pins connect the NodeMCU to the relay inputs?
Connect D1 to IN1, D2 to IN2, D3 to IN3, and D4 to IN4 of the relay board.
What power supply is recommended for the relay board?
A 5V power supply with 1 Amp capacity is required.

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Muhammad Bilal

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