# Simple USB Socket Charger!

9 Steps
Most of us have iPods or cameras. This is instructable will show you How to make a wall adapter for them. Normally it would cost \$30 at the Apple store but I had all the components in my spare parts bin. For me it was free! IF YOU SOMEHOW MESS UP WHILE BUILDING THIS AND
SOMETHING BAD HAPPENS TO YOUR USB DEVICE, I AM NOT TO BLAME...
Just had to say that. Oh, and watch the video too!
Remove these ads by Signing Up

## Step 1: Video!

electro18 says: Oct 28, 2012. 6:59 AM
can we attach a 6v 120mA solar panel to it and make it a "solar usb phone charger" ?
nodoubtman says: Oct 27, 2011. 5:53 AM
i have a wall adapter 5 V 500 mA that doesnt work... all battery charger instructables didn't work for me! it's very frustrating!!
vitalzero says: Apr 26, 2010. 8:25 AM
Here is my setup, it's just a draft.
the resistors for data pins are 100k ohm, for the led is 10k ohm, the connector at the bottom left is for a nokia phone charger which delivers 5 v @ 360mA.
If I connect it to a usb hub, all the lights light up like if it were connected to the pc, but if I connect it to the ipod nothing works :(
fruitkid101 (author) in reply to vitalzeroApr 26, 2010. 9:56 AM
Make sure that it is hooked up like this
vitalzero in reply to fruitkid101Apr 26, 2010. 10:34 AM
yep, it is.
I'm still thinking it has something to do with the phone charger giving 360mA instead of 500mA :(
nodoubtman in reply to vitalzeroOct 25, 2011. 8:30 AM
did you see any battery with 5 V input?

thank yoU! :)
legless says: Jul 31, 2011. 2:26 PM
for resistors in series the value would be

R1 + R2 + R3 +... = R(total)

for resistors in parallel the value would be

1/R1 + 1/R2 + 1/R3 + .... = 1/R(total)
or
(1 / (1/R1 + 1/R2 + 1/R3 + ....) = R(total)
aekara says: Jun 6, 2011. 2:05 AM
can i use two 50k ohm resistor in place of the one?
legless in reply to aekaraJul 31, 2011. 2:20 PM
or 51kohms depending on the resistor type (tolerance)
legless in reply to aekaraJul 31, 2011. 2:15 PM
Do you have 50kohm resistors? The more likely "preferred" value would be 47kohms.
fruitkid101 (author) in reply to aekaraJul 10, 2011. 3:56 PM
If you hook them up in seires, not parallel, I think it would work...maybe
ckrill1 says: Jul 13, 2011. 3:02 PM
Does this charge a 4th generation ipod touch? cause i've tried others that don't work with my ipod
mujtababhat says: Jul 4, 2010. 11:34 PM
can we we connect it to a notebook cooling pad
fruitkid101 (author) in reply to mujtababhatJul 10, 2011. 3:57 PM
You can connect it to anything that gets power via usb
ckrill1 says: Jul 10, 2011. 10:11 AM
instead of a wall plug could i use a 9 volt battery hooked up to a 5 volt regulater?
fruitkid101 (author) in reply to ckrill1Jul 10, 2011. 3:55 PM
Yes indeed, there are many instructables for that out here
ckrill1 says: Jul 10, 2011. 10:16 AM
also, do you really need the led?
fruitkid101 (author) in reply to ckrill1Jul 10, 2011. 3:55 PM
Nope, not at all. It just helps sometimes.
EToft says: Jan 8, 2011. 10:25 PM
The schematic in step 3 has an error in it. Refer to these pictures, and the corrected schematic here...
.Unknown. says: Nov 7, 2010. 2:59 AM
I thought pin 4 was meant to be ground...
EToft in reply to .Unknown.Jan 8, 2011. 11:45 AM
I agree...pin 4 is ground.

I believe that this is actually born out in the pictures in the ensuing steps. You can see that pin 4 is at the "bottom" in the picture of the USB connector. The photos appear to be the rotated reverse of the schematic...with the ground/negative side of the circuit at the bottom rather than at the top.
Kirbsome! says: Aug 8, 2010. 6:30 AM
Oh...
My...
GOD!

This is AWESOME!!!
Rayadillo says: Jun 22, 2010. 10:18 PM
But my cellphone charges just fine :(
Rayadillo says: Jun 22, 2010. 10:14 PM
My ipod just turns its light on :/ whats going on? and its an ipod nano video
ratgod says: May 2, 2010. 2:14 PM
I tried something similar by connecting power to the power pins on the USB socket and certain devices would not charge, I assume the 2x 100K tell the USB data lines that there is a connection and allow the USB to use the power?

On your schematic, the LED is drawn in reverse polarity compared to the power input, is this a reverse polarity indicator or is this a mistake?

good instructable.
fruitkid101 (author) in reply to ratgodMay 5, 2010. 3:01 PM
Yes, the 100ks are for the data lines. I seem to have missed the LED on the diagram, I'll try and fix that soon. Cheers!
fruitkid101 (author) says: Apr 26, 2010. 9:55 AM
Make sure that it is all hooked up like this
vitalzero in reply to fruitkid101May 4, 2010. 6:13 AM
Yep, it is
vitalzero says: Apr 23, 2010. 8:23 AM
Nice tut, I did it all the same, but i soldered the wires.
The thing is that didn't work and my wife ended up laughing at me :(
Just a note and dont know if that caused the failure: I used as the power source a nokia 5v 360mA charger and the female usb connector I had had 4 pins, but there was another kind of pin with a hole on it (in the pic, the left one), tried to reconnect again using other pins and the only thing I got, was an error msg from the ipod sayin that the device was unknown (and a beeping sound of course)
ratgod in reply to vitalzeroMay 2, 2010. 4:27 PM
From what I can see,(if its the metal tab on the left side of the left connector in the pic that your questioning) then that is for attaching the shielding braid from the cable.

I personally would suggest it to be left unconnected in this project as you don't need to shield any data transfer from interference, unless you need it attached for some mechanical stability, but make sure its not connected to any of the wiring.
fruitkid101 (author) in reply to vitalzeroApr 23, 2010. 9:20 AM
If it's not too much to ask, could you post some pictures of what your whole setup? thanks
vitalzero in reply to fruitkid101Apr 24, 2010. 7:24 AM

hehe, sorry, I disassembled it, but I can tell that Interchanged cables for pins 1 and 4 (+ -) and also for data pins, connected the resistors in different ways and none worked. I'm thinking it may have something to do with the power source givin 360mA instead 500mA

ppatches24 says: Apr 26, 2010. 5:13 PM
Hey this is really cool and i am going to make one of these i have wanted a nice simple good instructable for an ipod touch for a long time just one question i have made one of these and i pluged in my ipod then my battery explode so i had to buy a new one will this kill my ipod if i do it right.
fruitkid101 (author) in reply to ppatches24Apr 26, 2010. 9:28 PM
Thanks. You know, some people wouldn't believe you when you say you fried your battery. I do however, being a victim of fried ipod batteries myself.