| Author | Post | Options |
| Posted by probutus |
Message # 1 Posted at May 3, 2012, 9:04 pm, subject: Mod to add extra power connector |
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Messages: 17 posts
Registration date: March 27, 2012
Status: Offline
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I was fed up with the situation that I either had to power the device via the usb-port and then I could experiment properly with the usb drivers or use batteries which drain really fast if you're playing around with the device so I added an extra power connector which I hooked up to a 5V external power supply. I soldered the 5V and GND wires directly to the metal contacts of the battery compartment. So I can either use batteries OR plug the device to the external power supply; adding some diodes might solve this problem as well but I don't plan to use batteries anyway...
I guess this will void my warranty...
By the way: The 4 pin connector is the UART connection and the switch is for interrupting the TX line sine it is also used as Boot select line... |
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| Posted by Matchless |
Message # 2 Posted at May 4, 2012, 10:25 am, subject: Mod to add extra power connector |
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Messages: 5 posts
Registration date: December 16, 2011
Status: Offline
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I've made a external power connector some time ago but I used a plug with an internal switch in it.
When I use the power adaptor then the battery disconnects. So I can use or battery or external power  |
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| Posted by penbex |
Message # 3 Posted at May 4, 2012, 10:32 am, subject: Mod to add extra power connector |
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Messages: 2279 posts
Registration date: May 21, 2009
Status: Offline
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Ok, but why use an external power connector?
Whats wrong with the USB connector to power the device?
W. |
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| Posted by probutus |
Message # 4 Posted at May 4, 2012, 8:06 pm, subject: Mod to add extra power connector |
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Messages: 17 posts
Registration date: March 27, 2012
Status: Offline
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Quote:Ok, but why use an external power connector?
Whats wrong with the USB connector to power the device?
W. |
The "official" version: I'm currently experimenting with the usb gadget drivers of this system. With the original setup I can only unplug the USB port from my PC without disconnecting the device from power when the system runs on batteries. Since these drain very fast while playing with the device I added this extra power connector.
The "honest" version  : I already drilled a hole in the backside of the device just to see that the switch I originally planned to put in there didn't fit and I had to drill another hole. This power plug fits perfectly into it and serves a purpose... (see official version)
(Last Edited by probutus on May 4, 2012, 9:08 pm) |
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