Category: 3D Printer
MOD-10 7 Segment Display
Demonstration This is a sequential circuit design, Mod10 means it will count from 0-9. 555 timer is in astable mode and it will produce a clock pulse, which is controlled by 100k potentiometer. This clock pulse is input to 74LS90 which is a decade 0-9 ripple counter. Kindly use the 74LS90 if some one tell…
Random LED Flasher
Demonstration This Project flashes 8 LEDs in random manner. The speed of random flashes can be changed by simply changing the Capacitor of 555 timer, on 2.2mf it flashes will be faster and on 10mF they will be slower This pattern is mostly seen on Christmas trees and other type of decorations.Parts Required Circuit DiagramBread board Arrangement
LED Chaser
Demonstration This is a sequential circuit design, it has 10 LEDs The count advances as the clock input from 555 timer becomes high (on the rising-edge). Each output Q0-Q9 goes high in turn as counting advances. The reset input should be low (0V) for normal operation (counting 0-9). If you just want to use few…
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…
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