Fun Book For Arduino Newbies

If you are a newbie in the world of Arduino but not sure where to start from, you should check this comic book introduction to the Arduino platform from artist Jody Culkin. The comic is Creative Commons-licensed and can be downloaded in the PDF format from here.

3.3V-5V Level Translator for Interfacing XBee with PIC/AVR

Circuit  shows the schematic of simple level translator based on very common transistors;

Nowadays most of the devices are running on 3.3 volts, and likewise their communication levels also work on 3.3 volts. For example XBee runs on 3.3 volts and to interface it with microcontrollers running on 5V, one needs to translated voltages levels so that they both communicate.

Parts Used:

• BC547 (2)
• BC557 (2)
• 100 Ohms (2)
• 47K (2)

Applications:

• Interfacing XBee with PIC/AVR or any other 5V Microcontroller for UART Communication.
• Interfacing GPS Devices.
• Communication between 3.3 devices with 5V.

You can also download Proteus simulation file to test the circuit;
Download: Transistor Based Level Translator – Proteus Simulation

Source : http://creativeelectron.net

Hans R. Camenzind - Creator of the 555 Timer IC

RIP Hans R. Camenzind(1934-2012(aug-8) - 555 timer inventor

"Hans Camenzind was born and raised in Switzerland and moved to the U.S. after college. He received an MSEE from Northeastern University and an MBA from the University of Santa Clara. After several years doing research in the Boston area, he moved to the West Coast to join Signetics (now Philips) and later started his own company, Interdesign. After heading it for seven years he sold Interdesign to Plessey. Since then he has been an independent design consultant in analog IC design, operating under the name Array Design in San Francisco. During his career at four different companies he designed the first integrated class D amplifier, introduced the phase-locked loop concept to ICs, invented the semicustom IC and created the 555 timer. He has designed 151 standard and custom ICs so far."

 

 

Arduino Real time clock 1307 and more

Ardino Working with NEC Remotes 

Arduino Working with 1307 Real Time Clock

Arduino Programming the Boot loader

 

And more

See the Link

More Here

All About I2C

See This link

Good site for Arduino / Raspberry pi / Android

Good site for Arduino / Raspberry pi / Android

http://mitchtech.net/

How to Program ATmega8 Series Microcontrollers

Here you can see how to program a Atmega 8 Series Chip (Atmega8 , 168, 328 etc).

                                                         Atmega 168 Block Diagram

ICSP Connection Digram , You can use your Arduino Board ICSP Connector for programming

See More here