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Digital Lab

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

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Digital Lab

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

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

Raspberry Pi Tips and Tricks

Raspberry Pi OS Basic commands In this post I am listing out some raspberry pi tips and tricks. These frequently used commands will help you maintain and use your raspberry…

  • September 16, 2022
  • Raspberry Pi, Tutorials
Read MoreRaspberry Pi Tips and Tricks

How to add switch to start and shutdown Raspberry Pi

In this post I will show how you can add a power switch to start and shutdown raspberry pi.

  • January 13, 2026
  • Electronics, Project, Raspberry Pi
  • 2 Comments
Read MoreHow to add switch to start and shutdown Raspberry Pi
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