Forum: Nokia 770
2007-07-04, 20:31
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
@Kybo_Ren, A resistor does limit current pull, but it also drops the voltage output and as explained earlier there is no source of 5volts inside the 770.
The battery puts out 3.7volts. This is most...
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Forum: Nokia 770
2007-07-04, 00:46
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Replies: 53
Views: 26,330
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Forum: Nokia 770
2007-07-02, 21:39
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
No problem, as much as you are frustrated by not being able to get a straight answer, I am annoyed by electronics teachers who don't cover the basics with enough detail for people to understand why...
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Forum: Nokia 770
2007-07-02, 21:37
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Replies: 14
Views: 6,318
Re: Using an N770 as a Monitor?
I don't know the name of the program, but there is a VNC like program that will make a VNC window on a PC that looks like a 2nd monitor.
Also doesn't vista have some sort of "Mini-monitor mode"...
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Forum: Nokia 770
2007-07-02, 20:11
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Replies: 53
Views: 26,330
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Forum: Nokia 770
2007-06-29, 23:44
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
You don't actually control current. Current, measured in amps, is PULLED by the device. So you really only have control over the voltage.
Take the example of a 50-watt light bulb and a 100-watt...
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Forum: Nokia 770
2007-06-29, 16:46
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
Good tips, a diode (1N4004 or similar would keep separation between the USB 5volts and the charger 5volts. It is also a safer way to do this mode if anyone is worried. But also most USB jacks are far...
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Forum: Nokia 770
2007-06-29, 13:43
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
I have connected both the charger cable and USB cables at the same time, nothing screws up, but I don't use my 770 in host mode, but here is no reason it should not work.
Just don't put too much...
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Forum: Nokia 770
2007-06-29, 04:55
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
I get what you are asking, but neither the 770 or ipod usb ports were designed to output power, they are power imputs.
Host mode changes the 770 so external devices can link to the 770 as any other...
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Forum: Nokia 770
2007-06-29, 03:33
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
Even if the Nokia 770 generates +5volts for it's own circuitry, it would be a bad idea to try to tap that power for external USB devices.
There are a couple reasons besides battery drain:...
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Forum: Nokia 770
2007-06-29, 01:12
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
Great tip, I never thought of that, I have to go get some now.
The only reason I knew it was a ferrite was because it was gray, brown are usually capacitors, and parts like that with printed...
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Forum: Nokia 770
2007-06-28, 23:39
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Replies: 71
Views: 34,937
Re: Modification: Charge via USB
Yes, that would work, but that is a custom cable to lose, if you do it internally then you can get a cable at any store if you forgot yours at home.
Heck I had neither the wall-wart, nor a mini USB...
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Forum: Nokia 770
2007-06-28, 19:51
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Replies: 71
Views: 34,937
Modification: Charge via USB
Hello all, I am a new 770 user thanks to Woot.
I am also a computer modifier, and like to fix annoying design features in products. In this case it is hauling a 5volt wall wart around to charge my...
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