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USB Powered Bawls Light??
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PostPosted: Mon May 29, 2006 2:12 pm    Post subject: Re: heh Reply with quote

elmetal wrote:
I don't have anywhere to host my image file so if you can give me your e-mail address I can send it over to you.
Do you think you could send them to me as well? rmayott@gmail.com

Thanks!
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Eightnine
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PostPosted: Fri Jun 02, 2006 6:07 am    Post subject: Reply with quote

So for this hack, was the only thing that you had to do was change the 470 resistor to a 150 resistor? Do you still have the schematic you worked with? I'd like to check it out too! I think powering the light by USB would be awesome.

Since USB is five volts though will that make the light not as bright as the nine volt battery will?
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elmetal
HG Junior


Joined: 13 Apr 2006
Posts: 13

PostPosted: Fri Jun 02, 2006 7:00 am    Post subject: Reply with quote

absolutely not. that's where the resistor comes in. with the 9volt, the resistor limits the current to what we want. with the 5 volt, we use a resistor that limits less flow that way it ends up being the same flow. Give me your email because I have the schematic in my sent mail folder that I can send you


Felipe
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Modio
HG Contributor


Joined: 23 Apr 2006
Posts: 29

PostPosted: Fri Jun 02, 2006 7:55 pm    Post subject: Reply with quote

you dont need a new resistor. it will still work just wont be as bright. mine has the old 470 in it and works just as fine as changing it.
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Eightnine
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PostPosted: Sat Jun 03, 2006 9:36 am    Post subject: Reply with quote

Thanks. My email is carlosserious@gmail.com , elmetal.
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mohitthegreat
Newbie


Joined: 15 Jun 2006
Posts: 4

PostPosted: Sat Jun 17, 2006 10:05 pm    Post subject: heres mine Reply with quote

this is how mine turned out.......
Thaks for the info on how to make it



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PostPosted: Sat Jul 29, 2006 10:58 am    Post subject: USB power Reply with quote

Great idea on using the USB port to power. Here's a question: USB provides 5v at 100-150mA standard, and 5V 500mA to devices that can tell the computer to supply more power. Lets say you wanted to run a whole lot of LED's off this circuit. How would you trick the computer into giving the full 500mA at the port instead of the 100mA?
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Guest
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PostPosted: Sat Jul 29, 2006 2:43 pm    Post subject: Elaboration Reply with quote

To elaborate: It doesn't seem to be a software application that would allow the device to request more power from the USB port, because a USB mouse runs without installing 3rd party software, although it does get a driver for the OS. I'm wondering if there is hardware onboard the device that is required to get the full power usage?
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Guest






PostPosted: Sat Aug 26, 2006 11:31 am    Post subject: Reply with quote

hey,
can i get that same schematic email please?
email is dho_21@hotmail.com
ty

dan
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BronzeG3
HG Master


Joined: 30 Apr 2006
Posts: 134

PostPosted: Sun Aug 27, 2006 11:26 am    Post subject: Reply with quote

In order to get a full 500mA out of a device on USB, the hardware that is connected to the USB line needs to tell the USB controller that it wants 500 mA. Here is an example on how to do it with a PIC http://www.piccoder.co.uk/content/view/47/26/.
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Guest






PostPosted: Tue Aug 29, 2006 11:18 pm    Post subject: Reply with quote

is that all that needs to be done?
i dont have to do anything with resistors or anything? (im a very n00b at this XD)
ty

dan
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Modio
HG Contributor


Joined: 23 Apr 2006
Posts: 29

PostPosted: Sun Oct 15, 2006 7:19 pm    Post subject: Reply with quote

I soldered in a resistor of lower value, so now my light is brighter. Yay me!
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corin28
Newbie


Joined: 14 Oct 2006
Posts: 1

PostPosted: Sun Oct 15, 2006 11:05 pm    Post subject: Reply with quote

what resistor value did you end up putting in?
any new pics?
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