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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
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Digital Lab

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

Time delay relay circuit

What is a time delay relay circuit? In a time delay relay circuit, relay contacts are closed or open after the preset time interval. Whereas in a normal relay contacts…

  • August 19, 2017
  • Electronics
  • 1 Comment
Read MoreTime delay relay circuit

1 Watt audio amplifier for Mobile device

About LM4890 1 Watt audio amplifier for mobile device has been designed using LM4890 power amplifier. LM4890 is primarily designed for mobile phones and other portable devices. It is capable…

  • August 9, 2017
  • Electronics
  • 1 Comment
Read More1 Watt audio amplifier for Mobile device

Real time clock with DS1302

Real time clock with DS1302 is designed using Arduino Uno. About DS1302 The DS1302 is a trickle-charge timekeeping chip containing a real-time clock/calendar and 31 bytes of static RAM. It…

  • July 23, 2021
  • Electronics
Read MoreReal time clock with DS1302

How to Install Linux Bash shell on Windows 10

Latest windows update allows you to have a full Ubuntu-based Bash shell. This allows you to run the Bash shell and the exact same binaries that you would normally run…

  • April 24, 2021
  • How-To, Linux
Read MoreHow to Install Linux Bash shell on Windows 10

Seven segment display counter

A seven segment display is typically used to display numbers from 0-9. It consists of 7 bar segments and a dot( 8 Segments). They are numbered A to F and DP…

  • June 26, 2017
  • Electronics
Read MoreSeven segment display counter

Web server on raspberry pi – how to setup?

Introduction In this post I will let you know how to set up web server on raspberry pi. There are many web servers for raspberry pi. In out example we…

  • September 16, 2022
  • How-To, Raspberry Pi
Read MoreWeb server on raspberry pi – how to setup?

Plus/minus supply using LMC7660

LM 7660 is a CMOS voltage convertor capable of converting a positive voltage in the range of +1.5 v – 10 v to the corresponding negative voltage of -1.5v to…

  • May 25, 2017
  • Electronics
Read MorePlus/minus supply using LMC7660

Bicycle USB Charger

This circuit has been developed to add a USB charging port to a bicycle for charging a mobile phone. The input supply for the circuit is produced by a dynamo…

  • August 12, 2017
  • Electronics
Read MoreBicycle USB Charger

Light Sensor using Arduino

Introduction In this project, a simple light sensor is designed using LDR. The project is built around Arduino. Components required Arduino UNO Light Dependent Resistor (LDR) 100 KΩ POT Buzzer…

  • April 17, 2017
  • Electronics
Read MoreLight Sensor using Arduino
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