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DCForever is offline DCForever
2005-11-07 , 01:15
Posts: 10 | Thanked: 2 times | Joined on Nov 2005
#11
I was wondering. Does any device that is already powered say an ipod or any mp3 player that can be used as a portable hd be used without any hack for power? In other words, just plug it in with the right type of cable and voila assuming you have tho port changed to usb host?
BTW, I can't wait to order mine and devlop something for it.
 
anacoreta is offline anacoreta
2005-11-26 , 17:50
Posts: 6 | Thanked: 0 times | Joined on Nov 2005
#12
Hello!

Please, has anyone tried the CP-H420MP with the nokia 770?

Thank you very much.
 
anacoreta is offline anacoreta
2005-11-26 , 18:29
Posts: 6 | Thanked: 0 times | Joined on Nov 2005
#13
Originally Posted by DCForever
I was wondering. Does any device that is already powered say an ipod or any mp3 player that can be used as a portable hd be used without any hack for power? In other words, just plug it in with the right type of cable and voila assuming you have tho port changed to usb host?
Good point!

I am going to buy an A female A female usb adapter to try your idea.

I will do the connection as follows:

Nokia 770 - nokia 770 usb cable - A female A female usb adaptor - mp3player

Do you think that it may work?

Thank you very much.
 
fredoll is offline fredoll
2005-11-26 , 19:28
Posts: 605 | Thanked: 137 times | Joined on Nov 2005 @ La Rochelle, France
#14
it might if ...
1/ you have put your 770 in USB Host Mode
2/ you can mount a USB Mass Storage File System
O Fred
 
Mike Cane is offline Mike Cane
2005-12-19 , 16:15
Posts: 949 | Thanked: 14 times | Joined on Jul 2005
#15
Someone needs to do a little app for those of us who are not Linux experts that will switch the 770 between host/unhost mode so we can use this USB stuff.
 
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Hedgecore is offline Hedgecore
2005-12-19 , 16:21
Posts: 1,361 | Thanked: 115 times | Joined on Oct 2005 @ Toronto, Ontario, Canada
#16
I have an RCA Lyra 40GB MP3 player that is recognized as an external HDD. I don't know how an IPod works, but my Lyra tries to charge from the host device by default. Once put into file Xfer mode however, I believe it still tries to sap power. Is there a way to put the 770 into host mode without hooping my OS?
 
bhima is offline bhima
2005-12-20 , 21:16
Posts: 79 | Thanked: 1 time | Joined on Nov 2005
#17
I think you will still need the USB power hack, sadly.
I have tried using:
Digital camera
Nokia USB phone
Powered USB hub
Powered USB CD-ROM drive

And none of them were recognized as USB devices. Yes, I had the 770 in host mode. In most cases, it appears that while there may be an external power supply for most of the system, the USB interface chip is still powered by the USB port.

You may get lucky and find a device that works, but chances are you're still going to need a cable and/or internal power hack.
 
djs_tx is offline djs_tx
2006-02-03 , 16:15
Posts: 227 | Thanked: 51 times | Joined on Feb 2006
#18
Originally Posted by konttori
How about using the nokia charger (supplies 5.7 V) as the power source. It might be a tempting alternative. Anyway, whenevery you are near a usb keyboard, power can't be that far away. Although for using it as a card reader, 9v battery is much saner choice.

Also, a splitter could be made so that you can connect the charger to 770 at the same time as it's powering the usb.
My Nokia charger puts out 5.0V for the N770... My nokia phone charger puts out 5.7 Volts
David
 
djs_tx is offline djs_tx
2006-02-03 , 17:20
Posts: 227 | Thanked: 51 times | Joined on Feb 2006
#19
Originally Posted by bhima
I think you will still need the USB power hack, sadly.
I have tried using:
Digital camera
Nokia USB phone
Powered USB hub
Powered USB CD-ROM drive

And none of them were recognized as USB devices. Yes, I had the 770 in host mode. In most cases, it appears that while there may be an external power supply for most of the system, the USB interface chip is still powered by the USB port.

You may get lucky and find a device that works, but chances are you're still going to need a cable and/or internal power hack.
So has anyone tested this with real hardware? I'm not sure if I am brave enough to be the first. So you have to bring +5V into the 770 USB port even if you want to use it in host mode? Make sense, they designed this thing to be super stingy on power.

David
 
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thoughtfix is offline thoughtfix
2006-02-03 , 17:51
Posts: 832 | Thanked: 75 times | Joined on Dec 2005 @ Phoenix, AZ
#20
David:
I used both of my power hacks to test a digital camera, a keyboard, and an iPod nano. All worked without problems. Here are the links:
http://thoughtfix.blogspot.com/2006/...njector-2.html
http://thoughtfix.blogspot.com/2006/...st-method.html

Enjoy
__________________
--Daniel G

TabletBlog.com - Thoughtfix's Nokia Internet Tablet Blog
 
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