21 Jun 2010 jkkroll   » (Master)

Portable Electrick Storage Device – Mark I

My daughter has swim meets every Saturday morning from 7am until around 1pm. During this time she is actually swimming a total of about 4 minutes, so the entire family tries to stay occupied the rest of the day. Almost every week someone complains “Oh, man! My iPod is dead!” Answering the tinkerer’s call to arms, I would like to present the Portable Electrick Storage Device Mark I:

Outside

Inside

USB Connectors

Charging my iPad

Specs:

  • Box – $6 brand new at the local thrift store, I only added electronics and handles. (I need to head back and get a couple more!)
  • Battery – 12V 7Ah (~12 iPod charges or 3.5 iPad charges)
  • Output – 5V @ 1.5A (will charge iPad while watching video)
  • Connectors – 3x USB Type-A female
  • 3A fuse directly on battery
  • Power switch with blue LED indicator

Plans for the future:

  • “Working” steam power plant
  • Microcontroller based monitor (Battery charge level, internal temp, etc) with 128×128 OLED screen
  • Embedded wireless web server (WRT54G based)

Syndicated 2010-06-21 19:29:33 from robotguy.net/Blog

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