ESP8266 PC Power

Overview

This project uses an ESP8266 microcontroller to create a web server for remotely managing a computer's power state. It includes features like a login page, failed login handling, and a control panel for turning on the computer.

Features

• Login Page: Secure access to the control panel.
• Failed Login Handling: Informative messages for incorrect login attempts.
• Control Panel: Simple interface to remotely turn on the computer.

Hardware Requirements

• ESP8266 Microcontroller: Used as the main controller for the web server. I used "Wemos D1 Mini".
• Relay switch: Relay swich is used as a switch (who would have guessed). i used "JQC-3FF-S-Z Module KY-019 5V One 1 Channel Relay"
• You can purchase the required ESP8266 microcontroller, such as the "Wemos D1 Mini," from this link.
• You'll need a relay switch like this one.

ESP8266 and Relay Switch Connection

To enable communication between the ESP8266 and the relay switch, follow these wiring instructions:

• Connect the ESP8266 5V pin to the Relay Switch 5V pin.
• Connect the ESP8266 GND (Ground) pin to the Relay Switch GND (Ground) pin.
• Connect the Relay Switch IN pin to the ESP8266 D1 pin.

ESP8266 Power Options

You have the flexibility to power the ESP8266 through various methods:

1. Motherboard Connection:

   • Connect the ESP8266 Ground (GND) pin to the Motherboard Ground pin.
   • Connect the ESP8266 5V pin to the Motherboard 5V pin.
   • Note: Refer to your motherboard manual for an appropriate port; I connected mine to an available port providing USB power to the computer's front panel.

2. USB Port:

   • Use the ESP8266 USB port.
   • Connect it to a power source like a phone charger or a computer's USB port.
   • Note:If you choice computer's USB port, this option may depend on your motherboard's settings.

Ensure secure connections based on your preferred power option for reliable functionality.

Setup

1. Connect the ESP8266 and relay switch to your computer.
2. Update Wi-Fi credentials and login details in the code.
3. Upload the code to the ESP8266.

Modifying Default Credentials

To enhance the security of your ESP8266 Computer Control, consider changing the default login credentials. Follow these steps:

1. Open the Arduino sketch file.

2. Locate line 211, which contains the following code:

   if (username.equals("admin") && password.equals("admin")) {
   

Update the values within the parentheses to your preferred username and password. For example:

if (username.equals("your_name") && password.equals("your_password")) {

Modifying URL Paths

To enhance security, consider modifying the URL paths in the code. Follow these steps:

1. Open the Arduino sketch file.

2. Locate line 32 for the control panel path and line 33 for the turn-on path. Change them to unique identifiers, for example.

   server.on("/controlpanel", HTTP_GET, handlePower);
   server.on("/turnon", HTTP_GET, handleTurnOn);
   

To somesting like:

server.on("/rianKziYiCgMkdeMQkTDptmEPBPhtJqjMtRQStHx", HTTP_GET, handlePower);
server.on("/fhHeBfgTeeTTspNBnCtXFAdnRggEDMjXQjTzGXjn", HTTP_GET, handleTurnOn);

And also change line 213 and line 285 in the code to match what you modified on lines 32 and 33.

  server.sendHeader("Location", "/controlpanel", true);
  html += "            fetch('/turnon');";

To

  server.sendHeader("Location", "/rianKziYiCgMkdeMQkTDptmEPBPhtJqjMtRQStHx", true);
  html += "            fetch('/fhHeBfgTeeTTspNBnCtXFAdnRggEDMjXQjTzGXjn');";

Usage

1. Power on the ESP8266 and ensure the relay switch is connected.
2. Connect to the Wi-Fi network.
3. Open a web browser and navigate to the ESP8266's IP address.
4. Log in using specified credentials.