Home made USB Tea Heater

Making your own USB tea heater could be an easy task for you if you just follow ohm’s law properly.A USB socket from PC can drive 500mA current at 5V output so if you want to heat the cup you need to get a proper resistor added in between power and ground of USB. Do calculate the power […]

A Helmet Television

Have you ever thought of watching every detail in front of your eyes every time? and you can find every detail whenever you want? No i am not talking about Google Glasses, I am talking about a helmet mounted television of 1967. We think that this is the first step of virtual reality which is being developed recently. The TV Helmet […]

WOW! A Helmet mounted GUN!!

Hello fellas, here is a classic Helmet Gun made by  Albert Bacon Pratt of Lyndon in 1916, this is a beyond the time thing. You can find his patent here. Here are some words from his patent papers. The weapon described has many advantages. The gun is automatically aimed unconsciously and incidentally to the turning of […]

What is a Digital Potentiometer? And how to use it?

Hello friends this post is about Digital Potentiometers that are used in digital signal processing and setting the gain digitally.“A stereo audio amplifier using two LM386 ICs with digital volume control for both left and right speakers.” So, how would you control the volume digitally?  You are right, by replacing the traditional electro-mechanical form of potentiometers with […]

Interfacing WII nunchuck (Wiichuck) with Picaxe microcontroller

Hello friends here is a cool post about interfacing an old Wiichuck device with Picaxe microcontroller. This is done by Genius devil (Cactus).This is a really nice project to that includes Wiichuck interfacing (you can read accelerometer data from nunchuck), then he decided to make a stereo control with this Wiichuchk.Have a look at video in […]

Proteus 8 Latest Version released download it for free

>> Hello friends, this is my first post on Proteus 8 in Genius Devils. Labcenter has recently released their most popular product Proteus 8. Now onward you will find nice tutorials on various Proteus 8 designs.  Just for newbies in Proteus 8 Proteus 8 is a best simulation software for various designs with microcontroller. It is a handy tool to test programs […]