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Build a Portable USB Power Device

Peter Schneider

July 16, 2009 Source: Studio Daily

Post your comments below

This tutorial shows how to build a USB power device from the industry-standard HIROSE 4-pin connector. The purpose of the box is to be able to charge/power small cameras and cell phones, using NP-type batteries and all HIROSE 4-pin compatible connectors. All parts are readily available from the Internet:

Hirose 4-pin Female Panel Mount (Digi-Key #HR213-ND, MFG p/n HR10A7R-4S)

USB A Jack, Panel Mount or In-Line Pigtail, Red/Black Wires for DC

Data Wires (Green/White)

DC/DC Cincon Converter, 9-18V in, 5V out. (Mouser #418-EC4A01H)

Ceramic Capacitor 0.1uf-50V (Mouser #147-72-104-RC)

3amp Diode (Mouser #625-1N5401-E3)

Optional: LED indicator with 500ohm resistor

20-22 Gauge Hookup Wire

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Comments (7) for "Build a Portable USB Power Device"

Hello,
You reference a schematic page in your article, is this available somewhere?
Thank you,
Jeff

Posted by Jeff on Wednesday, July 15, 2009 @ 06:24 PM

This is a great project but
where is the schematic page?

Posted by Carl on Wednesday, July 15, 2009 @ 07:03 PM

The schematic is linked in the article -
http://www.aimediaserver6.com/studiodaily/Studiomonthly/usbschematic.jpg

Posted by Peter Schneider on Thursday, July 16, 2009 @ 12:54 PM

better fit than what I made a while back

Posted by RD on Saturday, July 18, 2009 @ 12:33 AM

Great Project... If I wanted to make a 4 USB (power) connector box, what wires would be connected and in series or parallel? If you are going to build, why not go for as many as possible?

Posted by JIM on Wednesday, July 22, 2009 @ 10:33 AM

Am I understanding this right that it would be a 12v cigarette adapter for the input power? What are the output specs so as to ensure that I don't overpower my devices? Also would it be possible to make the output variable with some resistors and/or a potentiometer?

Posted by Brian on Wednesday, July 22, 2009 @ 10:48 AM

how about,how to build,a usb,to vcr,a/v output to computer,to record to a dvd?and save the info,and junk the tape.my laptop is a dell,vostro,1500.

Posted by marv kantorowitz on Wednesday, July 22, 2009 @ 10:55 PM