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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.

Whats new in JMeter 2.9

Its been quite some time since JMeter 2.9 is available. There have been few notable changes in the new version of JMeter. JMeter can now handle different types of documents…

  • May 18, 2013
  • Software Testing
Read MoreWhats new in JMeter 2.9

How to force install apps to SD card without ROOT

Force install apps to SD card without ROOT Samsung Galaxy Ace has only got 180 MBs of Internal memory. If you install a lot of apps, you are bound to…

  • December 12, 2013
  • How-To
Read MoreHow to force install apps to SD card without ROOT

Monitoring windows server using JMeter plugin

JMeter plugin is the very much usefull in load testing. Long time back I had posted an article for monitoring windows server using Nagios. Now you do not require Nagios any…

  • October 20, 2013
  • Software Testing
Read MoreMonitoring windows server using JMeter plugin

LED Torch with adjustable brightness

The Led torch with adjustable brightness circuit uses LM3914 as the basis of a 10 step variable brightness current-regulated white LED . This circuit has only four components in the control…

  • August 1, 2017
  • Electronics
  • 2 Comments
Read MoreLED Torch with adjustable brightness

What is performance testing?

“Performance testing is defined as the technical investigation done to determine or validate the speed, scalability, and/or stability characteristics of the system under test.” Types of Performance testing Performance test…

  • March 27, 2013
  • Software Testing
Read MoreWhat is performance testing?

Mains Powered LED Lights

All mains powered LED circuits work with 240 volt AC current. Mains powered LED – Single LED The power diode in the first diagram is designed to discharge the 220n…

  • July 2, 2017
  • Electronics
  • 3 Comments
Read MoreMains Powered LED Lights

Audio Amplifier using LM386

Audio amplifier using LM386 is a power amplifier designed to be used in low voltage consumer applications. Typical applications are like portable AM/FM amplifier, TV sound systems. It requires minimum…

  • January 22, 2016
  • Electronics
  • 2 Comments
Read MoreAudio Amplifier using LM386

White LED on 1.5 v Supply

In this post you will find circuit on how we can light up white LED on 1.5 v supply. Heart of the circuit is the transformer winded on 2.5mm by…

  • July 2, 2017
  • Electronics
Read MoreWhite LED on 1.5 v Supply

1 Watt Audio Amplifier

Audio AMPLIFIER 1 watt audio amplifier shown below is very simple and easy to make. You can use this in making pocket amplifier for your mp3 player. It can fit…

  • June 26, 2016
  • Electronics
Read More1 Watt Audio Amplifier
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Top Posts

  • ESP32 WiFi Scanner EP6: Add Battery Voltage and Percentage Monitoring
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  • ESP32 Wi-Fi Scanner Project EP4 – Add BLE Scanner and Battery Support
  • ESP32 Wi-Fi Scanner Project EP3 – Display Live Wi-Fi Networks on TFT
  • ESP32 Wi-Fi Scanner Project EP2 – Build the TFT Display Framework (ST7789)

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