YAN9VUSBC

Step 3 Solder the circuit together:

For the USB I just drilled three holes in a row and cut out the rest of the rectangle with an Xacto knife. The USB should be mounted in the plastic before you solder the connections.

So the USB, LED, and resistor are on top and the regulator is on the bottom. The wire lengths are just to have enough room to epoxy the top in before the bottom, 2"-3".

Comments

[DoctorOfAwesome]

Were do i get a regulator?

[charlie.nourse]

Radioshack

[codongolev]

ebay is a great resource.

[kelseymh]

You buy them.

[courlander]

i have heard that some people are looking for circuit diagrams this might help a bit more green is Grnd Red is V+ and Blue is V+ (in)

[coolmike8789]

 OMG you saved my life!! thanks :)

[Recluse]

In those diagrams, how much voltage is going to the led? 9 volts from the battery or 5 from the regulator? I'm a bit inexperienced with circuits like this and don't want to use the wrong resistor for the led.

[anonymouse197]

looks like a green/brown/red/gold resistor from the photos so he's using a 5.1k (5100Ω) resistor.

[dark sponge]

It depends. The LED is getting 5v from the regulator but it goes through a resistor first. The resistor probably lowers the voltage to about 2v for the led.

[thepaul1993]

if the 5v doesn't work use the 9v. never test at the highest voltage always test from the lower voltage and work your way up

[courlander]

true but with the regulator it's alright to use almost any power. note i did say almost. i have made multiple of these they all worked with nine volts

[courlander]

if you go and buy these parts: -a 5v regulator -a nine volt battery -a female usb port - a 1/4 watt resistor -an led and copy my smallest design exactly exepet you have to filp-flop the leads going to the in and positive pins

[Matrix-technician]

Thank you so much for listing how many watts resistor i need. Your a life saver!

[hac]

Thanks. :)

[courlander]

if you do the small one make sure to get the regulator leads right. i drew the input and output leads wrong

[hac]

Okay, I was gonna ask a guy at RadioShack anyways when I buy it just to be sure.

[courlander]

i forgot to say this earlier but the 3 different ways were what i originally tried and the 3rd is the smallest (i tried to avoid using wires for more strength of the actual circuit when i was epoxying it) also the small rectangle connecting from the led (green wire) to the GRND piece of the regulator is the resistor (1/4 watt)

[computerwizard]

would it be possible to omit the LED from the diagram? or is it needed to run properly?

[hurtzmyhead]

you can most defiantly remove the led, it is only used to show the status of the battery

[Chromatica]

But if you do, I would put in a small diode to make sure you don't blow out your regulator by accidentally reversing the current when you put in the battery.

[Zem]

What kind of resistor is it?

[hurtzmyhead]

it changes on what type of led that you use, if you want to find the right one look up a led calculator, put in the specs of the application that you are using it on and it will come out with the resistor that you should use

[QueenRocks191]

not enough detail for wiring

[MasteerRyon]

thats cause he attached a link showing the wiring but apparently the link is broken so try not to post no duh comments k?

[kris142]

can some1 help me with this?i have all the parts i need except the regulator ad i know how to solder. I just started doing this kind of stuff about 3 days ago. Ive got not oo much experience as all as you can tell. The desriptions arent enough for me and there isnt enough pics. Anyone help me out ?

[explosivetron]

does anyone have a circuit diagram would be very useful because the instructions skip from wiring the usb port and other components to finishing the case and putting putty on the circuit thanks

[lacrosseislife24]

if you add a switch to one of the wires going to the usb and cut a slot in the case, you can turn it on and off so u dont kill ur battery.

[APOCALYPTiC ONi]

or you could just unplug the battery...

[lacrosseislife24]

or that

[N8 Hanks]

Where do you solder the wires? I'm not that technical, so I don't know.

[erckgillis]

Use colored wires, red for V+ and Black for GND...makes it easier to follow along. I also use Green/Yellow for audio Left/Right etc...