MANORANJAN DAS
Published © Apache-2.0

ESP8266 8-Channel Relay Module Home Automation

A custom PCB project with an ESP8266 and 8-channel relay.

BeginnerFull instructions provided1 hour20,158
ESP8266 8-Channel Relay Module Home Automation

Things used in this project

Hardware components

Wemos D1 Mini
Espressif Wemos D1 Mini
×1
Resistor 150 OhM
×9
ULN2803
×1
Linear Regulator (7805)
Linear Regulator (7805)
×1
3 mm LED: Red
3 mm LED: Red
×1
3 mm LED: Green
3 mm LED: Green
×8
HLK-PM01
×1
2p Terminal Bluck
×1
3p Terminal Bluck
×8
1N4007 – High Voltage, High Current Rated Diode
1N4007 – High Voltage, High Current Rated Diode
×8
PCBWay Custom PCB
PCBWay Custom PCB
×1

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)

Story

Read more

Schematics

Schematic

Code

Untitled file

C/C++
/*************************************************************
  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 runs directly on ESP8266 chip.

  Note: This requires ESP8266 support package:
    https://github.com/esp8266/Arduino

  Please be sure to select the right ESP8266 module
  in the Tools -> Board menu!

  Change WiFi ssid, pass, and Blynk auth token to run :)
  Feel free to apply it to any other example. It's simple!
 *************************************************************/

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial


#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "Blynk Auto Code";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Router SSID";
char pass[] = "Password";

void setup()
{
  // Debug console
  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);
}

void loop()
{
  Blynk.run();
}

Credits

MANORANJAN DAS

MANORANJAN DAS

16 projects • 37 followers

Comments