Author Topic: DIY Battery Powered USB Charger (Read 12339 times)

hyper999 · « **on:** July 12, 2011, 12:02:50 PM »

A simple, but useful project to make at home.

Rodent · « **Reply #1 on:** July 12, 2011, 12:07:35 PM »

Hyper you always seem to impress lately, nice work and nice PDF very clean and easy to understand an easy to read Great job and again thanks for helping me the other day aslo

frenulem - No.5417 · « **Reply #2 on:** July 12, 2011, 01:24:52 PM »

Marks and Spencer? Posh Son of a ... :P

hyper999 · « **Reply #3 on:** July 12, 2011, 01:41:12 PM »

i wanted altoids but they were sold out

TwisTtheTwiTcH · « **Reply #4 on:** July 13, 2011, 12:05:24 AM »

Nice! Very clean as previously mentioned. I needed to replace my minty boost anyway. It looks like I am going to Radio Shack tomorrow! Bwaha

-TwisT

Anonamous · « **Reply #5 on:** July 13, 2011, 10:45:00 AM »

Cool, so now I can charge my phone on the go without buying any of those special things lol.

Unfortunattly for me the site I usually order my electronics parts from doesnt have the LT1302CN8-5 in stock lol. Im gonna have to buy them from somewhere else cause Im not buying 250 of them lol.

Ughh im having a hard time finding a place that has the LT1302CN8-5 and the 10uH inductor 1.5A in stock. any suggestions?

hyper999 · « **Reply #6 on:** July 13, 2011, 11:23:28 AM »

I got mine from Farnell

Anonamous · « **Reply #7 on:** July 13, 2011, 11:38:12 AM »

Quote from: hyper999 on July 13, 2011, 11:23:28 AM

I got mine from Farnell

US isn't listed under Select your country or region. FML why are some components such a pain to find.

hyper999 · « **Reply #8 on:** July 13, 2011, 11:40:13 AM »

http://www.newark.com/jsp/search/productdetail.jsp?SKU=24M4011&CMP=AFC-QO1721829242

Anonamous · « **Reply #9 on:** July 13, 2011, 11:53:06 AM »

I tried there before... they want to charge me $20 as a handling fee. My total is only $8.89 (those 2 items) but if I add everything else it would be 13.68 plus the $20usd which is complete crap cause id also have to pay shipping

magic_man185 · « **Reply #10 on:** July 13, 2011, 11:56:32 AM »

The reason they are charging that $20 is because they are coming from Farnell, so they would have to be shipped overseas. Newark is where I usually get my microchips. You are right though, it is kinda hard to find that chip here in the US, no one seems to stock it.

Anonamous · « **Reply #11 on:** July 13, 2011, 11:59:10 AM »

Quote from: magic_man185 on July 13, 2011, 11:56:32 AM

The reason they are charging that $20 is because they are coming from Farnell, so they would have to be shipped overseas. Newark is where I usually get my microchips.

its still lame. I do understand though, but still, im gonna add all the items on there and make the most of it

hyper999 · « **Reply #12 on:** July 13, 2011, 02:21:32 PM »

Just trying to gauge interest, would many people be interested in purchasing a complete kit for this project?

geraldrubalcava · « **Reply #13 on:** July 13, 2011, 02:31:08 PM »

great job hyper! and you also seem to have the pullup resistors! lol this is compatible with apple products right? lol nice!

hyper999 · « **Reply #14 on:** July 13, 2011, 02:39:44 PM »

Quote from: geraldrubalcava on July 13, 2011, 02:31:08 PM

great job hyper! and you also seem to have the pullup resistors! lol this is compatible with apple products right? lol nice!

Yes it is fully apple compatible

geraldrubalcava · « **Reply #15 on:** July 13, 2011, 03:10:54 PM »

sweet man! good job again man! xD

toadzilla · « **Reply #16 on:** July 13, 2011, 08:38:19 PM »

i might try this if my usb solar charger doesnt come in from ebay soon enough

frenulem - No.5417 · « **Reply #17 on:** July 14, 2011, 04:38:48 AM »

Quote from: hyper999 on July 13, 2011, 02:21:32 PM

Just trying to gauge interest, would many people be interested in purchasing a complete kit for this project?

It depends, if i could get it all for a cheeper price than if i got it from say rapid then yeah, also if i could get a PCB for it

(Woop 500th Post)

hyper999 · « **Reply #18 on:** July 21, 2011, 12:56:16 PM »

@Matt I have slightly tweaked the pdf could you please replace it with this one

http://dl.dropbox.com/u/27267461/BPUC_Publication.pdf

edited the original post with this link.

Anonamous · « **Reply #19 on:** July 22, 2011, 04:49:23 PM »

Well here is mine, just don't laugh at the terrible cut I made for the usb port lol

http://www.youtube.com/watch?v=hp-a3NsT9SU

Rodent · « **Reply #20 on:** July 22, 2011, 04:52:01 PM »

looks good enought to me nice job

hyper999 · « **Reply #21 on:** July 22, 2011, 04:55:57 PM »

Quote from: Rodent on July 22, 2011, 04:52:01 PM

looks good enought to me nice job

Ditto.

Anonamous · « **Reply #22 on:** July 23, 2011, 09:42:36 AM »

It appears that it isnt actually putting out enough power fast enough to actually charge it, even though the phone says its charging, its still taking power from the chargers batteries and some from the phone batteries itself. I turned my phone off and plugged it in over night. When I woke up, the batteries in the charger were dead and my phone was completely dead :/

hyper999 · « **Reply #23 on:** July 23, 2011, 10:10:57 AM »

Quote from: Anonamous on July 23, 2011, 09:42:36 AM

It appears that it isnt actually putting out enough power fast enough to actually charge it, even though the phone says its charging, its still taking power from the chargers batteries and some from the phone batteries itself. I turned my phone off and plugged it in over night. When I woke up, the batteries in the charger were dead and my phone was completely dead :/

maybe your phone isnt compatable

try putting fresh batteries in dont plug anyting into the usb then measure the current drawn from the batteries then report back

Anonamous · « **Reply #24 on:** July 23, 2011, 10:34:46 AM »

I got 4.92 volts.

Also, my phone pretty much has to be compatible lol, the wall charger it comes with has a usb port on it for me to plug the included cable into. Without that cable plugged into the wall charger, there is no charging cable on it lol.

geraldrubalcava · « **Reply #25 on:** July 23, 2011, 03:16:53 PM »

what phone model do you have? well most phones charger with 500mA to 1A(smart phones). some phones and iphones have a trick were a certain pullup resistor tells the phone how to charge,a quick charge to a long charge. most phones have a system were they will charge the phone up to 80% quickly, then after that it takes forever... lol

hyper999 · « **Reply #26 on:** July 23, 2011, 03:53:37 PM »

Quote from: Anonamous on July 23, 2011, 10:34:46 AM

I got 4.92 volts.

Also, my phone pretty much has to be compatible lol, the wall charger it comes with has a usb port on it for me to plug the included cable into. Without that cable plugged into the wall charger, there is no charging cable on it lol.

No I mean current, so amps (or milliamps in this case) drawn from the batteries, so you need to put your multimeter on the amps setting and put the probes in series with the battery pack, if you used 4 batteries with 2 diodes put it in series after the diodes.

Anonamous · « **Reply #27 on:** July 23, 2011, 04:59:21 PM »

Quote from: hyper999 on July 23, 2011, 03:53:37 PM

No I mean current, so amps (or milliamps in this case) drawn from the batteries, so you need to put your multimeter on the amps setting and put the probes in series with the battery pack, if you used 4 batteries with 2 diodes put it in series after the diodes.

Im not getting a steady reading lol. and I knew current was amps, I just wasnt paying attention when I tested it lol

hyper999 · « **Reply #28 on:** July 23, 2011, 05:01:52 PM »

Quote from: Anonamous on July 23, 2011, 04:59:21 PM

Im not getting a steady reading lol. and I knew current was amps, I just wasnt paying attention when I tested it lol

ok well something is wrong, i'm not sure what, but something is...

is everything hooked up as shown in the newest pdf? check again?

Sammy · « **Reply #29 on:** July 23, 2011, 07:38:30 PM »

Hmm i have this really cool screwdriver kit thing thats like a grenade that pops in have and is hollow with bits in it, i thinking about doing this with it, it would be pretty awesome!

Anonamous · « **Reply #30 on:** July 23, 2011, 07:43:09 PM »

Quote from: hyper999 on July 23, 2011, 05:01:52 PM

ok well something is wrong, i'm not sure what, but something is...

is everything hooked up as shown in the newest pdf? check again?

Everything is correct. Im going to try it on another phone just incase its my battery since it does have some water damage lol

Anonamous · « **Reply #31 on:** July 26, 2011, 10:22:54 AM »

LOL, my batteries on my multimeter died yesterday so i replaced them and tested again. Without anything plugged in i got 0mA and with something plugged in I got .16mA. Isnt that a little low though?

Also, I could use AAA insead of AA right, the only difference in them is the number of cells contained in each battery right?

I want to try to let up some more space so I can fit a small usb cable in there for charging.

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Author Topic: DIY Battery Powered USB Charger (Read 12339 times)