Simple 9v Usb Charger in an Altoids Tin

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Introduction: Simple 9v Usb Charger in an Altoids Tin

Parts used

Altoids Tin (empty)
5v Voltage regulator-i used a 7805
Female USB port
Wire
Battery clip
Battery

Tools

Soldering Iron
Solder
Drill
A File

Optional

Shrink tubing 
Switch


Note:this is my first instructable please tell me how i did :)

Step 1: 7805 Pinning and Usb Pinning

 on the 7805:

pin 1-positive in
pin 2-negative (ground)
pin 3-positive out



on the usb:
D+/D-      these are data-lines and are not used in my instructable


****EDIT-on the usb the pos and neg are it the wrong spot just flip the position :)

Step 2: Step 1

Grab your 7805 and solder 1 wire to each leg.(if your putting in a switch add 2 to the ground leg).

Solder your positive "in" leg onto the positive lead from the battery.

Now solder one ground wire to the switch and one to the negative wire coming from the battery.

Now solder the lead coming from the switch to the negative on your usb.

From the positive out leg on your 7805 solder a wire from it to the positive wire on your usb.


Step 3: Cutting Holes

Now take your drill and drill holes for your switch and usb.

Then file the holes square.

Step 4: Done.

 Now finally add everything to the tin and your good to go!

one tip: you can use the tin as a heatsink for your 7805.

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46 Comments

no becaus you need to use two 100 ohm resisters connecting between the D-, D+, and +5 volt terminals

Rryapolov, your 7805 pin usage is wrong.
Left is VOLTAGE IN
Center is GROUND
Right is VOLTAGE OUT (the one with LED should be the RIGHT one).

Cheers

not necessarily the led on the right pin

not necessarily the led on the right pin

Totally wrong 7805 pinout is 1-input(more than 7V DC) 2- ground 3- output 5V DC

i used a car charger to usb converter but for some reason it says "charging is not supported with this accessory" what should i do

4 replies

you're using an Apple device right?

im having the same problem. the usb charger only charges my device for a second, and then gives that error. i have tried it on a blackberry and an old ipod and they worked fine, but as soon as i connect to my phone (i use an iphone 5 ios 7.x.x) it gave the error

use two 100 ohm resisters connecting between the D-, D+, and +5 volt terminals

use two 100 ohm resisters connecting between the D-, D+, and +5 volt terminals

Most smart phone batteries are 1500-3300mah.

A 9V battery has 50-400mah and at 500mw load has less than 300mah capacity.

You're also losing 30% of that 300mah thru the 7805 as heat.

Just exactly HOW much does this remaining 210mah charge your phone ???

Ref : http://www.powerstream.com/9V-Alkaline-tests.htm

if you connect 2 9v batteries how long will it charge and will i need cooling

1 reply

itd double the time in theory (dont feel like doing the math) but u would want a really good cooling system set up maybe small fan plus small heatsink

this completely FRIED my ipad.... I just got a diff transformer to match the input charger levels, and bam a little ozone later and it NEVER WORKS AGAIN!!!

well a u shouldnt have used the chargers input levels, of course it was gonna fry it at 120 volts