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Physical Computing
Computer Controlled Stepper Motor
Written by admin   
Wednesday, 01 June 2011 00:00 writes:

A few months ago, I bought a stepper motor for only Rs.75 (about USD $1.50). I had almost forgotten about that motor until I found it lying in a secluded corner of my bedroom, collecting dust the other day. I searched the internet for information on controlling stepper motors with a computer and I was surprised at how easy it was! My stepper motor has five wires, and it is a unipolar stepper motor with a step angle of 7.5 degrees.

Computer Controlled Stepper Motor –[Link]

Last Updated on Wednesday, 01 June 2011 22:39
USB Controlled DIY Home Automation
Written by Saikat   
Thursday, 26 May 2011 00:00

Authors: Saikat

Wireless home automation is all about control and convenience.  This home automation project reverse engineers a remote so that it recognizes inputs from a computer or a microcontroller. He used an oscilloscope to decode the remote so that the microcontrollers can be programmed to communicate with the remote via a USB port.

Check out the instructions to learn how to setup the circuit.  The brain of the circuit consists of an ATmega8 microcontroller.  The user interacts with the setup via a program written in C which is freely available.  Check out more methods of controlling your home:


Read more:

Last Updated on Thursday, 26 May 2011 00:23
Pocket laser engraver
Written by Administrator   
Friday, 20 May 2011 00:00

Groover writes:

I have been trying to get my hands on a laser cutter for some time but they always seem out of reach. All the great things that can be done with a real laser cutter tickle the imagination. Now I feel it’s time to share my latest project – a low cost laser engraver, and maybe just have the chance to get my hands on the real thing ;) . The workspace is a bit small but none the less it works and comes so cheap that most will be able to replicate the result. I did take a few shortcuts, as I feel I don’t have the knowledge to do all the electronics I opted for readymade but low cost in favor of trying to make my own (and most likely fail). All parts used are however easy to find.

Pocket laser engraver –[Link]

Last Updated on Friday, 20 May 2011 00:03
Electronics made easy
Written by Administrator   
Thursday, 19 May 2011 00:00

A-Nony-Mus writes:

So I have seen a lot of people asking where is a good place to learn about electronics. I think it is about time that someone made an instructable about it. In this instructable I will cover some of the main electronics components, their uses and what they look like in schematics. I would like to request the members who are good with electronics to help out; if I missed a component, tell me I missed it, if I got some information wrong, tell me, please.

Electronics made easy –[Link]

Last Updated on Thursday, 19 May 2011 00:59
Yet Another Simple Pot-controlled 555 PWM generator
Written by Administrator   
Thursday, 19 May 2011 00:00

ZeroTruths writes:

Something that a project that I’m working on has me doing is using a serial to parallel IC (think 74HC595) to control leds. However, rather than drive the leds directly from the pins, I opted for the use of transistors. After testing this out, it became apparent to me that perhaps the leds might be too bright, so I went in search of a simple PWM generator.

Yet Another Simple Pot-controlled 555 PWM generator –[Link]


Last Updated on Thursday, 19 May 2011 01:12
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