DFRobot 2aa Booster
Now that my project for raspberry pi as surveillance system is active, I also need backup power supply if any power interruptions comes. With just 2 AA size battery size the surveillance system can run up to 1 hour and 30 minutes, just like my earlier test of 4 AA size batteries that lasted for 3-4 hours but my earlier test does not have a usb wifi dongle and a usb webcam controlled by motion program for surveillance. It can be upgraded by adding a parallel of AA size batteries which is much cheaper, safer and easily available source of power for our mini computer.
Well, adafruit's minty boost is hard to find locally but there is an alternative to it created by DFRobot. Our friend circuit-help sells it for Pinoy hobbyist, and it's better than to have nothing, the chip used by adafruit is available in RS Philippines website so if you want to build your own you can build it because it's open source and instructions is also available to their website. Now I can bring my Raspberry Pi in my pocket for 1 hour and 30 minutes for surveillance but only after I found a quality webcam to hide whenever I have a mission.. =)
I have to get a new pair of DC jack for final wirings
Portable power supply to a portable computer is a must.. Luckily I have an extra collection of eneloop batteries for my Maglite flashlights and I have planned to add more for Pi´s. I use a multimeter and I got about 5.45 volt reading from series connection of eneloop and 5.30 amps of current fully charged which is suitable for a portable power supply. AA Eneloop battery is only 1.2 volts and 1900mA so you will need at least 4 of them in a battery pack to get the 5 volt power requirements of Raspberry Pi while the current will help the usage hours of the tiny computer.
Bare desktop computer
Wew! I just bought a raspberry Pi, I was looking for the cheapest price but I was surprised of the box and it was different from RS and element14. I thought it was just another clone from Chinese manufacturers but after searching the net, Egoman from China is allowed to assemble Raspberry Pi's to be distributed within China, Taiwan, Macau, Hong Kong in short in their territories. It was red board so it will be different from the rest of Europe.