Universal USB Power Supply Kit

Step 2: Parts List

Note: A full parts list is attached to this page. Listing the part, manufacture, part number, link to Mouser.com, quantity and price (as of the publishing of this Instructable).

Parts List:

• 1x 15k ohm resistor $0.07
• 1x 100 ohm resistor $0.07
• 2x 22K ohm resistor $0.07
• 1x 6k ohm resistor $0.13
• 1x 20k ohm resistor $0.07
• 1x SPST slider Switch $1.37
• 1x Fixed Terminal Block $0.54
• 1x USB Type A Connector $0.52
• 1x 0.1 uF Multilayer Ceramic Capacitor $0.16
• 1x 1.0 uF Aluminum Electrolytic Capacitor $0.32
• 1x 5mm Red LED $0.59
• 1x LM7805 Voltage Regulator $0.50
• 1x 1N4004 Diode $0.09
• PCB or Breadboard ($2.19 for a 2 breadboard set at Radio Shack)

Total cost in parts is less then $7 before cost of shipping is added. Making this the most versatile and affordable USB power supply you can find. Its small size allows it to be a lightweight backpack to turn any 8v or larger battery pack into an extended life battery pack for your mobile devices. It also allows you to make use of almost any would be useless wall wart you have lying around.

If you spend another $5 you can get a nice little 8x AA Battery holder and 9V snap connector and have a good 9V power pack for any USB device. Then you have the option of using regular AA batteries or rechargeable AA batteries.

Comments

[Sargebubbles26]

You should put it in an altoids tin now for portablity :D

[mpilchfamily]

Left this open so you can put it in any housing you would like.

[mdog93]

Could a lm317 be used in the lm7805's place here?

[mpilchfamily]

Yes. Any voltage regulator you have that will output 5V will work. But you will need to add some additional components along with the LM317 so it will output 5V. Just refer to the LM317 data sheet for how to accomplish that.

[mdog93]

Cool, I bought some of those as I though I would need them. Alas I did not and I can use them for an overflow project with no further expense :) such is the beauty of buying 'extras' when placing a large order online... anyway I digress.

Good instructable, and thanks for replying so fast.
mdog93