DEV Community: кαтнєєѕкυмαɾ

ESP32 with RS485 16 Channel Relay Module Connection and Code

кαтнєєѕкυмαɾ — Fri, 18 Aug 2023 15:41:17 +0000

I searched a lot of sites and more tutorials to find the accurate code to control this type of relay. but I cannot find the correct code solution. After researching for three days, I found the correct code and solution for it. I will use it in my future projects. happy to share with you.

RS485 Wiring

Code



#include <ModbusMaster.h>

int  pool_size1;

#define RX2 16       //RX

  
  
  define TX2 17       //TX


ModbusMaster node1;  //ModbusRTU Relay Slave ID1

int8_t  pool_size;

void setup()

{ 

  Serial.begin(9600);

  Serial2.begin(19200, SERIAL_8N1, RX2, TX2);  //RX2=16,RO ,TX2=17, DI

  node1.begin(1, Serial2);

Serial.println("successfully node bigining");

  delay(1000);

pool_size = node1.writeSingleRegister(0x01, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x02, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x03, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x04, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x05, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x06, 0x0100);

   delay(1000);

  pool_size = node1.writeSingleRegister(0x07, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x08, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x09, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0A, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0B, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0C, 0x0100);

  delay(1000);

pool_size = node1.writeSingleRegister(0x0D, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0E, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0F, 0x0100);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x10, 0x0100);

delay(5000);

  Serial.println("Attempting to turn off relay");

pool_size = node1.writeSingleRegister(0x01, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x02, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x03, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x04, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x05, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x06, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x07, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x08, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x09, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0A, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0B, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0C, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0D, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0E, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x0F, 0x0200);

  delay(1000);

  pool_size = node1.writeSingleRegister(0x10, 0x0200);

  delay(5000);

Serial.println("Attempting to turn on all relays");

  pool_size = node1.writeSingleRegister(0x00, 0x0700);

  delay(5000);

Serial.println("Attempting to turn off all relays");

  pool_size = node1.writeSingleRegister(0x00, 0x0800);

  delay(5000);

}

void loop()

{

}

Thanks you !!!

Time Picker Module in Vanilla JS

кαтнєєѕкυмαɾ — Sun, 23 Jul 2023 14:08:17 +0000

I have faced time-picking issues in designing web-based apps. Several types of Time and Date pickers are available on the internet and open-sourced but not found anything vanilla js and zero dependency package. All packages are required NPM dependency. So I decided to create a new module. It's completely customized to your design.

💥 usage in your HTML file

    <input type="text" id="timePick" value="08:06:04">

    <input type="text" class="timePicker"/>
    <input type="text" class="timePicker"/>
    <input type="text" class="timePicker"/>

    <script src="./time-pick.js"></script>
    <script>
        var timepicker = new TimePick('#timePick');
        var timepickerz = new TimePick('.timePicker');
    </script>

I'll attach the GitHub repository link. If you like use it. Mostly welcome your suggestion and contributions.

Github Repo: https://github.com/Katheesh/TimePick.js

If you're a web designer/developer, now you don't need this just bookmark it or star it. It will use for you!

😍 Have a good day.

Ready KASFY NodeJS Framework (beta)

кαтнєєѕкυмαɾ — Sat, 19 Sep 2020 07:28:46 +0000

We have done a kasfy framework beta release.

Kasfy, a free an open source framework built on the top of Node.js harnessing the power the amazing web programming language, JavaScript. It fulfills all of your API development needs.

Documentation: kasfy.js.org

Github Repository Link

Ready Kasfy CLI for easy to work your project

Install Kasfy CLI with npm

# linux, ubuntu, and mac using with "sudo"
sudo npm install -g kasfy
sudo npm install -g npm

# windows must run cmd with administrator permission 
npm install -g kasfy
npm install -g npm

Create new Kasfy Project

kasfy create AwesomeApp   
# AwesomeApp is sample name.
# OR

kasfy new AwesomeApp

Kasfy Features

MVC pattern
Build in file creation commands
Migration Setup using JSON

😍 Have a Awesome day.

How to get Geo location in PHP

кαтнєєѕкυмαɾ — Thu, 27 Aug 2020 16:56:35 +0000

I was created a composer package for get GEO Location from the users. This package help to find location info and service provider information.

https://packagist.org/packages/katheesh/visitorinfo

💥 Installation

# install it via composer
composer require katheesh/visitorinfo

💥 To use in your program

require_once __DIR__ . '/vendor/autoload.php';

use VisitorInfo\GetInfo;

$info = new GetInfo;


    // get IP and geographical information about your client
echo $info->getGeoInfo();

    // get service provider information about your client
echo $info->getProviderInfo();

     // get hosting provider information about your client
echo $info->getHostingInfo();

Thank you for your time

😍 Have a good day.

How to send Laravel mail using smtp

кαтнєєѕкυмαɾ — Mon, 08 Jun 2020 07:40:32 +0000

Create Laravel project or if you are beginner in laravel to visit Laravel Docs

💥 Setup following variables in your .env file

MAIL_MAILER=smtp
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=sample@example.com
MAIL_PASSWORD=************
MAIL_ENCRYPTION=ssl
MAIL_FROM_ADDRESS=sample@yourdomain.com
MAIL_FROM_NAME="${APP_NAME}"

Don't use google gmail smtp details. because that is not a proper method to send emails and it is not working properly.

💥 Next you go to your project folder and open terminal run following command to create mail class

php artisan make:mail Mailer

💥 Now go to app/mail folder and setup your mail class like this one

<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class NewMail extends Mailable
{
    use Queueable, SerializesModels;

    public $details;

    /**
     * Create a new message instance.
     *
     * @return void
     */
    public function __construct($details)
    {
        $this->details = $details;
    }

    /**
     * Build the message.
     *
     * @return $this
     */
    public function build()
    {
        return $this->subject($this->details['subject'])
                    ->view('email.contact')
                    ->from($this->details['from'], $this->details['from']);
    }
}

💥 After configure mailing class create a view file with .blade.php extension

<h3 class="aligncenter" style="font-family: 'Helvetica Neue',Helvetica,Arial,'Lucida Grande',sans-serif; box-sizing: border-box; font-size: 20px; color: #000; line-height: 1.2em; font-weight: 400; text-align: center; margin: 40px 0 0;" align="center">{{ $details['title'] }}</h3>

Don't Forgot Mailing blade files only accept inline css's

💥 Finally set your controller on sending trigger process

public function new_mail(Request $request)
    {

        $details = [
            'to' => $request->to,
            'from' => $request->from,
            'subject' => $request->subject,
            'title' => $request->title,
            "body"  => $request->body
        ];

        \Mail::to($request->to)->send(new \App\Mail\NewMail($details));

        if (Mail::failures()) {
            return response()->json([
                'status'  => false,
                'data'    => $details,
                'message' => 'Nnot sending mail.. retry again...'
            ]);
        }
        return response()->json([
            'status'  => true,
            'data'    => $details,
            'message' => 'Your details mailed successfully'
        ]);
    }

If you want project source please visit my github profile and clone and refer it.

😍 Have a good day.

PHP Hello World by Katheesh

кαтнєєѕкυмαɾ — Sat, 06 Jun 2020 03:58:03 +0000

Hi my dear friends, This is my first blog. I will try to write blog to share my tricks and techniques with others.

Today we'll see how to write basic program of php server side scripting..

💥 First Step

Need a basic software to run php scripts.
🎯 Apache server (xampp or wampp or lampp)
🎯 A text editor
🎯 A browser

💥 Second Step

🎯 Start apache server.
🎯 Open text editor and type following codes

<?php 
    echo "hello world!"
?>

💥 Third Step

🎯 Save the file with .php extension on the apache server root folder (if you use xampp save on Xampp/htdocs).

💥 Fourth Step

🎯 Open Browser
🎯 navigate to http://localhost/Your folder name/Your file Name

💥 Conclusion

If you become a php script developer properly learn basic syntax's of php and need database concepts.

About Hello world.

"Hello, World!" program generally is a computer program that outputs or displays the message "Hello, World!". Such a program is very simple in most programming languages, and is often used to illustrate the basic syntax of a programming language. It is often the first program written by people learning to code.