Author: Pir Arkam
LFR Using Just 555 Timers
Demonstration https://www.youtube.com/watch?v=NxVviQp0J5c This is Simple and cheap approach to Line Following Robot, This do not have any micro controller but just a simple basic Circuit on three 555 timers. It has a good efficiency on following all kind of curves. This Robot is no more than 1000PKR. To make a reliable and well functioning robot, you…
RF Radiation Detector
Demonstration This is my favourite project, its too simple and very interesting because it does not require any voltage source it converts RF frequency waves from cell phone (whenever you call or send a text) to little current to flash a LED. Actually this project is also called as LED power meter, it is used…
Shadow Detector Alarm
Demonstration This is also known as Sun up alarm, in this circuit you can set the LDR’s sensitivity by 100k potentiometer, you can set it with any lamp around your room (tube light, bulb, LED etc) by varrying the 100k potentiometer. We can also control the buzzer time by 1M potentiometer You can Enhance this project…
Simple Light Sensor using 741 Op-amp
Demonstration This is a Light sensor circuit. Probably most simple and interesting circuit to play with. It can be configured as either shadow detector or Light detector, which means it can detect the intensity of light. Right now in the circuit diagram it is configured as a Shadow Detector, that means the LED will turn…
Clap Switch Circuit
Demonstration This is a sound sensitive circuit, When sound is produced it is changed into electric energy through condenser mic and LED turns on.LED turns on sound signal and turns off automatically after few seconds, the LED on-time can be varied by changing the value of 100mF capacitor.When Capacitor value is changed from 100mF to…
What is a 3D Printer?
A 3-D Printer is a machine which prints out 3-D objects. Just like a 2-D printer scans a paper and print out another paper, 3-D printer has a 3-D Scanner to scan a 3-D object. This Scanner makes a 3-D model image which is sent to 3-D printer’s computer. Latest 3-D printer’s accuracy is in…
RepRap Pakistan | First 3D Printing Project in Pakistan
Demonstration What is RepRap ? RepRap Project was an initiative to make low-cost desktop 3D printers. It started as an open-source 3D revolution. This website is a universal platform for all RepRappers around the world. The portal has various designs of RepRaps with building instructions and anybody interested in making one can help themselves. Build your own RepRap What is…
LED Chaser using Arduino
This is a LED Chaser, with the simplest code. Here you vary the speed of chasing LEDs by potentiometer which is as analog input to arduino.You can have different LED glowing arrangements, like Knight Rider is kinda famous, you can make it by simply putting the same loop but with descending outputs 😉 try it.…
Flashing LED using 555 Timer
Demonstration The circuit is designed to use very little current to prolong battery life so that it can be left on permanently. A superbright’ red LED is used because this provides a bright flash with a low current. If you want to use 4.5V supply by connecting 3 Alkaline cells or any other source, change…
What is Aurdino?
Arduino is the most famous micro-controller among hobbyists and students around the world. Most importantly it is an open source physical computing platform which is based on a small single-board micro-controller and a software for your computer to make programs, download to this board and run them. Best thing about this micro-controller is that you can…
Latest News
Stay Connected
Categories
3D Printer Arduino Basic Electronics General Personal Robotics
Search the Archives
Access over the years of investigative journalism and breaking reports
