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Laser Engraver and Cutter in One
Written by Administrator   
Friday, 20 May 2011 00:00

ardunio laser

A laser cutter and engraver made from cheap materials that can easily be found. It is easy to operate and it can enhance your imaginative thinking to create splendid artworks.

It engraves whatever images you like and cuts it perfectly the way you wanted it be.


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Last Updated on Friday, 20 May 2011 00:01
Libelium’s new Geiger Counter
Written by Administrator   
Wednesday, 18 May 2011 00:00

There are at least three of our distributors working against the clock to create new geiger shields in an attempt to provide people in Japan with tools for self-measuring radiation levels as we have been reporting earlier. Libelium, from Zaragoza, Spain, released one yesterday with one of the most comprehensive guides I have seen so far to how a geiger counter works, how to measure, and how to connect it to an Arduino board.

Libelium’s new Geiger Counter

(c) 2011 geiger sensor, picture by

Libelium’s work in this case could almost be considered political, here their manifesto:

The main finality of the Radiation Sensor Board for Arduino is to help people in Japan to measure the levels of radiation in their everyday life after the unfortunate earthquake and tsunami struck Japan in March 2011 and cause the nuclear radiation leakages in Fukushima. We want to give the chance to measure by themselves this levels instead of trusting in the general advises which are being broadcasted. The usage of this sensor board along with the affordable and easy to use Arduino platform helps people to get radiation values from specific places.

As technical guys, we feel the responsibility of providing our support in those areas where we can contribute. As a result, first batch has been shipped to Japan at no charge to the Tokyo Hackerspace and other working groups.

The design of the board is open hardware and the source code is released under GPL.

The Libelium Team. April 2011.

In parallel to the effort to provide people with Hardware, Shigeru Kobayashi is working in creating a central point of information on where to find sensors, and how to send the information to the net and make it available for the rest of us. We will come back with more information about this soon.

Read more at Libelium’s page, where you can also acquire the sensor.

Last Updated on Wednesday, 18 May 2011 01:41
AVR-based watering system
Written by Administrator   
Wednesday, 18 May 2011 00:00

Deddies Lab needed a way to water their resident Ficus Lyrata on a schedule of one-half liter per week. In order to automate the process, they designed an Atmega8 based control system which activates a water pump at appropriate intervals in order to keep the plant watered. A simple AC plug-in wall timer activates the electronics for 15 minutes once a day, during which time the program increments the day of week counter and turns on the pump for a preset time. Other sensors keep track of data such as the water reservoir level.

The schematic and source code in C are provided.

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Last Updated on Wednesday, 18 May 2011 01:13
AVR based LC meter
Written by Administrator   
Wednesday, 18 May 2011 00:00

You can find capacitance meter on almost all cheap multimeter but inductance meter somehow is excluded in many of those. Inductance isn’t very common component among electronics hobbyists except those who work with RF signals. Anyway in some cases inductance meter is necessary tool, for instance when building DC lack this functionality then build one instead spending decent amount of $$ for brand new tool that probably wont be used frequently. And another reason of DIY is fun of building stuff.

So, this meter is build by using Atmega168 as a heart microcontroller that takes care of LCD and measuring oscillator frequency which depends on capacitance or inductance values. It is really simple and effective design for hobbyists.

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Last Updated on Wednesday, 18 May 2011 01:19
AVR910 – AVR programmer
Written by Administrator   
Wednesday, 18 May 2011 00:00

AVR910 is a very useful AVR programmer based on AVR910 application note by ATMEL. It can program almost complete range of AVR chips. The programmer uses ISP capability of AVR chips. It is one of the fastest programmers for AVR.

AVR910 – AVR programmer - [via]

Last Updated on Wednesday, 18 May 2011 00:41
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