Hackupy/USB Charger

Parts Needed

• Power input
• Step down DC-DC converter
• Female USB Connector
• Optional - resistors (for iPhone charging)

Example Setups

Solar Panel > Charge Controller > 12v Battery > Step Down Converter > USB Header

Step Down 5V DC-DC Converters

• HRD 05003 - 5V 3A, used in Tokyo Hackerspace charger
• LM2592 or LM2596 - Simple 5 pin 5V 2A/3A converter
• Assorted 5V DC-DC Converters - via Ebay

Resources

• iCharge - LadyAda Information about charging apple devices
• iPhone Charging More Apple device charging circuits
• 10-in-1 USB Cable Cheap cable with many kinds of phone adapters
• USB Extension cable - Easy way to reduce strain to onboard connectors from frequent plugging in / unplugging of devices

Projects

• USB Phone Charger - By Tayken, Tokyo Hackerspace
• Ersatz Battery Booster - Simple USB Battery extender
• Subcomandante - Solar USB charger from Occupy Boston
• Noisebridge Powerstation USB charger
• Minty Boost
• Bootstrap Solar Battery Kit - Schematics, build instructions, etc
• Solar USB Charger - Very basic solar USB charger from Make and RadioShack