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Digital Lab

A home to software testing, electronics circuits & projects, tips and tricks and digital diary.

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  • Blog
  • Projects
  • How-To
  • Tutorials
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  • About
Digital Lab

A home to software testing, electronics circuits & projects, tips and tricks and digital diary.

How to hook keypads with Arduino

Matrix style keypads with Arduino is very handy and easy to use for any input required. It can be used to enter passwords, control games and robots. What is needed Arduino…

  • January 13, 2026
  • Electronics, How-To, Project
Read MoreHow to hook keypads with Arduino

Selenium Grid setup for Remote execution

Why do you need Selenium Grid setup for remote execution? Scenario1 – You need to run your selenium automation tests with different browser/OS combinationScenario2 – You need to run selenium…

  • January 13, 2026
  • Software Testing, Tutorials
Read MoreSelenium Grid setup for Remote execution

How to calculate distance using HC-SR04 and Raspberry pi

In this article I am going to calculate distance using HC-SR04 and raspberry pi. The HC-SR04 Ultrasonic sensor that I am going to use here has four pins: Ground (GND)…

  • January 13, 2026
  • Electronics, How-To, Project
Read MoreHow to calculate distance using HC-SR04 and Raspberry pi

How to use Google sheets for stock analysis

In this post I will show you how you can use Google sheets for stock analysis. Only prerequisite is you need to have a google account and some basic spreadsheet…

  • February 27, 2022
  • How-To, Tutorials
Read MoreHow to use Google sheets for stock analysis

How to connect 16*2 LCD using I2C with Arduino

This display setup can be used in all Arduino projects and we only need 4 wires. 2 for data and 2 for power. This16*2 LCD using I2C with Arduino setup will simplify all your Arduino projects display requirement.

  • January 13, 2026
  • Electronics, How-To, Project
Read MoreHow to connect 16*2 LCD using I2C with Arduino

Rewind Year 2021

Year 2021 started with a hope but ended with despair. When 2020 was ending we thought new year will bring some good and pandemic will end soon but it became…

  • January 15, 2022
  • Electronics
Read MoreRewind Year 2021

How to use A9G GPS/GSM/GPRS pudding board – Part2

In the previous post we have seen how we can use A9G GPS/GSM/GPRS pudding board using a serial debugging tool and list of AT commands that we can use it.…

  • January 13, 2026
  • Electronics, Project
Read MoreHow to use A9G GPS/GSM/GPRS pudding board – Part2

How to use A9G GPS/GSM/GPRS pudding board – Part1

What is A9G GPS/GPRS board? A9G GPS/GSM/GPRS pudding board is a complete quad-band GSM/GPRS+GPRS/GPS module. This module supports the basic phone voice call/SMS, serial to GPRS and GPS data transmission…

  • January 13, 2026
  • Electronics, Project
Read MoreHow to use A9G GPS/GSM/GPRS pudding board – Part1

How to program Arduino pro mini

Introduction The Arduino Pro Mini is a low-cost, and small size arduino board with the minimum of components (no on-board USB or pin headers). This makes it a good choice…

  • September 21, 2022
  • Electronics, How-To
Read MoreHow to program Arduino pro mini
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