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Modifying a USB cable to charge iPod without PC connection
http://www.gizmodo.com.au/2008/07/si..._ch argers-2/
+5V ---50k --- D- | 10k | GND ---40K --- D+ Is this safe? Would it work? -- @~@ Might, Courage, Vision, SINCERITY. / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (x86_64 Ubuntu 9.10) Linux 2.6.38.4 ^ ^ 22:00:02 up 5 days 2:01 1 user load average: 1.10 1.08 1.05 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
Modifying a USB cable to charge iPod without PC connection
On Apr 29, 7:04*am, Man-wai Chang wrote:
http://www.gizmodo.com.au/2008/07/si..._charger_units... +5V ---50k --- D- * * * * * * * * | * * * * * * * *10k * * * * * * * * | GND ---40K --- D+ Is this safe? Would it work? Show your work -- why make people duplicate your analysis? |
Modifying a USB cable to charge iPod without PC connection
+5V ---50k --- D-
| 10k | GND ---40K --- D+ Show your work -- why make people duplicate your analysis? I dont' wanna kill my iPod Touch... :) -- @~@ Might, Courage, Vision, SINCERITY. / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (x86_64 Ubuntu 9.10) Linux 2.6.38.4 ^ ^ 23:40:01 up 5 days 3:41 1 user load average: 1.00 1.04 1.05 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
Modifying a USB cable to charge iPod without PC connection
On Apr 29, 8:44*am, Man-wai Chang wrote:
+5V ---50k --- D- * * * * * * * * *| * * * * * * * * 10k * * * * * * * * *| GND ---40K --- D+ Show your work -- why make people duplicate your analysis? I dont' wanna kill my iPod Touch... :) Why not just use the two resistor dividers your link claims do work? |
Modifying a USB cable to charge iPod without PC connection
On 29 abr, 10:04, Man-wai Chang wrote:
http://www.gizmodo.com.au/2008/07/si..._charger_units... +5V ---50k --- D- * * * * * * * * | * * * * * * * *10k * * * * * * * * | GND ---40K --- D+ Is this safe? Would it work? -- * *@~@ * Might, Courage, Vision, SINCERITY. * / v \ *Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (x86_64 Ubuntu 9.10) *Linux 2.6.38.4 * *^ ^ * 22:00:02 up 5 days 2:01 1 user load average: 1.10 1.08 1.05 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):http://www.swd.gov.hk/tc/index/site_...sub_addressesa Seems to me that this mod should work. All that this mod does is to put some voltage in D- and D+ pins, and that voltage will never be greater than 5V, so I don´t see why it will not work. Just give it a try. You won´t fry anything. |
Modifying a USB cable to charge iPod without PC connection
I made an iPod charger to run off 4 AA batteries using a similar divider.
Not sure why you are modifying the example given, but the values are not especially critical. Any reason you can't measure the output? .. "Man-wai Chang" wrote in message ... http://www.gizmodo.com.au/2008/07/si..._ch argers-2/ +5V ---50k --- D- | 10k | GND ---40K --- D+ Is this safe? Would it work? -- @~@ Might, Courage, Vision, SINCERITY. / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (x86_64 Ubuntu 9.10) Linux 2.6.38.4 ^ ^ 22:00:02 up 5 days 2:01 1 user load average: 1.10 1.08 1.05 ???! ???! ???! ???! ???! ???! ????? (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
Modifying a USB cable to charge iPod without PC connection
On 2011-04-29, Man-wai Chang wrote:
http://www.gizmodo.com.au/2008/07/si..._ch argers-2/ +5V ---50k --- D- | 10k | GND ---40K --- D+ Is this safe? Would it work? As you're not putting more than 3.3V on the data lines it looks fine to me. There's a standard for power-only USB sockets. it's basically 5V and some resistors, I'm not sure how close to it that layout it is, I'd research and try the standard way first. -- 100% natural |
Modifying a USB cable to charge iPod without PC connection
On 2011-04-29, Man-wai Chang wrote:
http://www.gizmodo.com.au/2008/07/si..._ch argers-2/ +5V ---50k --- D- | 10k | GND ---40K --- D+ Is this safe? Would it work? At initial glance it seems good, but I haven't read the whole USB charging specification. http://www.usb.org/developers/devcla...rging_V1_2.zip |
Modifying a USB cable to charge iPod without PC connection
At initial glance it seems good, but I haven't read the whole USB
charging specification. http://www.usb.org/developers/devcla...rging_V1_2.zip Too much information.... -_-" Are you saying that the voltage over D+ and D- should be smaller than 2.0V and 2.5V respectively? -- @~@ Might, Courage, Vision, SINCERITY. / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (x86_64 Ubuntu 9.10) Linux 2.6.38.4 ^ ^ 18:57:01 up 5 days 22:58 1 user load average: 1.01 1.06 1.05 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
Modifying a USB cable to charge iPod without PC connection
On 2011-04-30, Man-wai Chang wrote:
At initial glance it seems good, but I haven't read the whole USB charging specification. http://www.usb.org/developers/devcla...rging_V1_2.zip Too much information.... -_-" Are you saying that the voltage over D+ and D- should be smaller than 2.0V and 2.5V respectively? The only maximum voltage number I saw quoted for those pins was 3.6V I skimmed it, mostly I did searches and looked at the diagrams. -- 100% natural |
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