I'll use this page as a blog to keep track of my project. It will be a working doc during the process. When finished I will do a clean-up and write a description of steps taken + the final result.

• Learn EAGLE
  
• get familiar with etching techniques
  
• learn SMD soldering
  
• Make a pcb that allows for easy use of wireless sensor reading. Goal is to use keep it small-size, low-cost, use of easy to find components. Also, the board should most preferably be easy to program and have low power consumption.
  

Low power sensor node (<$12) by Maniacbug
Using an Atmega328P MCU, nRF24L01+ radio, 3V | 540mAh coin cell to measure room temperature wirelessly on intervals.
Libraries, EAGLE circuit and PCB available Link

Mini FET board by IDEO Labs
A small shield for Arduino Pro Mini
EAGLE circuit and board available, Link

The Arduino Split
project link

• Arduino Pro Mini
• FTDI Breakout board/ cable
• Coin cell 3,6V | 110mAh, Sparkfun
• tiny battery pack 3,7V | 110mAh, Sparkfun
• arduino pro micro, Sparkfun