Tutorials
- All about circuits
- Electronics tutorials
- Interfacing Arduino with different hardware
- First steps in prototyping a design by SparkFun
- Atmega chip's bootloader hack - 1k bootloader
Where to buy
- Small 3.3V 8Mhz atmega238 development boards (Arduino ProMini, AT-Mini)
Forums and projects
- Discussions related to Atmel AVR microcontrollers on AVRfreaks
- Open Energy Monitor project
Other useful links
- MicroLAN (1-Wire) temperature sensor DS18B20
- Infrared detector (light-to-voltage) TLS262R
- Low-powered sub Ghz transciever CC1101
- High perfomance darlington arrays for stepper motors control ULN2003A
Theory and concepts
- Wikipedia about Wireless Sensor Networks
- What is jitter and how to live with it?
PCB section
- Eagle CAD
SmartHome / SmartEnergy
- An impressive list of ZigBee compatible smartenergy devices
OpenSource Software
- Event handling and systems monitoring Nagios
- Graph generation utilities RRDtool with a good tutorial
- Arduino IDE (Integrated Development Environment)
To be continued...