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[Solved] Error: DevToolsActivePort file doesn't exist

Hello friends, I was running a web scraper in python and I recieved this error 1 WebDriverException: unknown error: DevToolsActivePort file doesn’t exist I was trying to create a webdriver.Chrome() instance by using the following code 1 2 from selenium import webdriver driver = webdriver.Chrome() Then I searched on internet about it, added Selenium to $PATH variable, tried to run it in –no-sandbox mode, and lots of other things but with no success. But, finally after extensive research on this topic I found the correct way to implement it. I will start from the start 1. Install pip 1 sudo apt install python3-pip 2. Install Selenium 1 pip install selenium 3. Install Chromium 1 sudo apt-get install chromium-browser 4. Copy the path of Chromium, in my case it was: 1 /usr/bin/chromium-browser 5. Implement this code in python 1 2 from selenium import webdriver from selenium.webdriver.chrome.options

[SOLVED] Make a cheap time-lapse camera using esp32 cam

Esp-32 Camera is a cheap development board with a camera, wifi, and an SD card module on it. It can be used as a standalone device as well as with other components to make several cool camera projects which include: IP camera for home security, motion detection alarm system, face recognition door lock system, video recorder, selfie camera, drone camera, and other computer vision (ai) related projects. Obviously, it can be used in many more applications, but here, I am going to discuss how you can use it as a standalone device to record a beautiful time-lapse video. Things you will need for this project: Esp32 cam development board , An FTDI programmer , An SD card , An SD card reader , and Some jumper wires . Do-it-yourself Steps: 1. First thing first, you need to open Arduino IDE and go to Tools -> Boards -> Boards Manager and search esp32. 2. Install esp32 by Espressif Systems. 3. Make below connections between esp32 cam and F

[SOLVED] Java Socket Example for sending and receiving byte array

Welcome again to my blog! A lot of people have asked me to share a working example of sending and receiving byte array using Java socket programming. So, below is an example for you to get started: Server.java 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 // A Java program for a Server import java.net.*; import java.util.Arrays; import java.io.*; public class Server { //initialize socket and input stream private Socket socket = null; private ServerSocket server = null; private InputStream in = null; private OutputStream out = null; // constructor with port public Server(int port) { // starts server and waits for a connection try { server = new ServerSocket(port); System.out.println("Server started"); System.out.println("

[SOLVED] How to Install Tesseract on CentOS ?

Hello folks, To install Tesseract OCR on CentOS, run the following command: yum install tesseract -y To install more languages, run the following command by changing the 3 letter language code at the end which corresponds to the language you want to install: yum install -y tesseract-langpack-eng yum install -y tesseract-langpack-hin To see the list of supported languages, visit: https://github.com/tesseract-ocr/tessdoc/blob/master/Data-Files.md Let me know if this helped you. Thanks. Buy Me a Coffee - https://www.buymeacoffee.com/agautam

[SOLVED] HTTP Server and Client for both Wemos D1 Mini and NodeMCU

Hello dear readers, I am giving you code for HTTP Server and Client for both Wemos D1 Mini and NodeMCU . You can use this code in your Arduino IDE. You can make one device HTTP Server and the other HTTP Client and both will communicate with each other. You can also use it to call a web API if you have internet access. I have tested it on Wemos D1 Mini , and I am pretty sure that it will work just fine in NodeMCU also. HTTP Server This code will create a hotspot and a HTTP web server. It will print out its IP Address after creating the hotspot(or Access Point). Note this IP Address and pass it to HTTP Client to connect to this device(Server). 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 #include <ESP8266WiFi.h> #include <ESP8266WebServer.h> // Replace with your network credentials const char*

[SOLVED] Draw Bounding Boxes Over Each Word on PDF Documents

Welcome to pdf_bboxes ! Hi! This is a python CLI program which takes a PDF as an input and provides bounding boxes over each word on all pages of the PDF in a nice and clean json , image or csv format. Note: This program only accepts 'Text PDFs' and not 'Image or Scanned PDFs'. Usage : This program can be used on any computer-generated PDFs, be it Invoices, Research Papers, e-books, etc. Its output can be used to make datasets for machine learning algorithms like GCN (Graph Convolutional Network) or other ML algorithms. Installation : git clone https://github.com/abhishekgautam101/pdf_bboxes.git cd pdf_bboxes pip install -r requirements.txt How to run? In order to run this program, you need to pass 3 mandatory arguments: --input INPUT Path of a PDF file. --output_format {json,csv,img} 'json' for JSON, 'csv' for CSV, 'img' for images with bounding boxes; for all the pages of PDF. --output_folder OUTPUT_FOLDER Output folder path. Syntax/Exampl

[Solved] ValueError: Unknown initializer: GlorotUniform when using models.model_from_json(json)

Hi there, if you are trying to load tensorflow neural network model from json by using below code 1 models.model_from_json(json) and getting this error 1 ValueError: Unknown initializer: GlorotUniform then, change 1 models.model_from_json(json) to 1 tf.keras.models.model_from_json(json) I hope this change have solved your problems. Thanks for reading! Happy coding :) Buy Me a Coffee - https://www.buymeacoffee.com/agautam

[Solved] How to install Ubuntu in Lenovo Ideapad D330?

Hello everyone! If you have also felt that the Lenovo Ideapad D330 is too slow to run windows 10, and wish to install some lightweight Ubuntu based Distro on it to make it faster, then you have come to the right place. Here I am about to Guide to through the process step by step to install Kubuntu on Lenovo Ideapad D330. Step 1: Download LTS version of Kubuntu from here . Step 2: Download Rufus and run it. Step 3: Use Rufus to make a bootable pendrive using 'MBR' partition Scheme and 'BIOS or UEFI' target system. Step 4: Shutdown your Lenovo Ideapad D330 and power it on. Immediately after pressing the power on button, keep pressing Fn+F2 Key multiple times unless the BIOS settings menu open. Step 5: Go to 'Security' tab and disable 'Secure Boot' option. Step 6: Press Fn+F10 to save and exit. Step 7: Again Shutdown the computer and start from power button. Immediately after keep pressing Fn+F12 Key to open Boot Options menu. Step 8: Select the US

[SOLVED] Top 5 Applications of CCTV Traffic AI Vision

Current CCTV implementations for monitoring traffic provide video footage to review in the future to find some specific activity or events that have taken place in order to solve criminal cases or violation of traffic rules. But it is a very hectic job to find some specific event from huge amount of video data, that is available. AI Vision comes to rescue here and provides very helpful and precise results, which is difficult to extract from the conventional method. AI Vision adds some very powerful tools to the existing CCTV implementations. These features/tools of AI Vision are listed below: Gunshot Detection It can alert authorities in effectively real time with information about the type of gunfire and a location that can be as accurate as 10 feet. Multiple sensors pick up the sound of a gunshot and their machine learning algorithm triangulates where the shot happened by comparing data such as when each sensor heard the sound, the noise level, and how the should echoed of building.

[SOLVED] Realm Database Tutorial for Android

Welcome friends, In this blog I am going to talk about Realm Database. It is fast and easy way to create local storage database in Android apps. It is supereasy than the traditional method of creating databases using SQLite. So, without much ado, let’s get started! 1. Installation Step 1: Add the classpath dependency to the project level build.gradle file. 1 2 3 4 5 6 7 8 buildscript { repositories { jcenter() } dependencies { classpath "io.realm:realm-gradle-plugin:10.0.1" } } Step 2: Apply the realm-android plugin to the top of the application level build.gradle file. 1 apply plugin: 'com.android.application' apply plugin: 'realm-android' 2. Creating a helper class To Initialize Realm, you have to call Realm.init(context); just once per application. To do this, Step 1 : Add android:name=".MyApplication" attribute inside application tag in AndroidManifest.xml

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