Martin Ossmann (94)

1-05-2012 | As this series shows, the popular AVR microcontroller can be used for digital signal processing tasks. In this instalment we will look at a...

1-04-2012 | This article tells you how to modify a give-away RFID reader so it can read MIFARE ISO 14443 cards. Alternatively you can either modify an e...

1-04-2012 | As this series shows, the popular AVR microcontroller can be used for digital signal processing tasks. Here we will use an ATmega88 to sampl...

1-03-2012 | Atmel AVR microcontrollers are very popular, not least because of the free development tools that are available. In this series we show how...

1-03-2012 | Although the author is an electronics specialist he is also fascinated by electromechanical contraptions of every description. When he saw t...

1-12-2010 | A PC case with a side window gives plenty of opportunities for pimping the machine out with visual effects. Stand out from the crowd with th...

1-06-2010 | In this article we describe a do-it-yourself RFID reader as well as a way of making your own RFID tags. What’s more, we show how to make RFI...

1-01-2010 | Herwe use a green glowing valve as a CPU activity meter. Power and control are both provided by the USB port. A simpler variant on the circu...

1-02-2009 | Varactor diodes (Varicaps) along with many other exotic components which are often specifi ed in HF and RF designs are sometimes diffi cult...

1-01-2008 | Wireless power transmission is already used in many applications, including electric toothbrushes, RFID tags and ‘refuelling’ electric cars....