Openmoko:Usb light
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It works but it's not very beautiful, perhaps you have any ideas. Mail me :D | It works but it's not very beautiful, perhaps you have any ideas. Mail me :D | ||
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+ | :I have three Ideas: | ||
+ | :# You could use heat shrink tube. I often fix plugs this way: Put a piece of heat shrink tube around the plug and the resistors and the contacts of the LEDs, but don't shrink it. Instead, fill it with hot glue. It's a bit tricky, but gives better results. | ||
+ | :# Use SMD resistors and perhaps even SMD leds | ||
+ | :# Adopted from [http://www.eeepc.de/thread.php?threadid=4109 this thread (german)], you could use a [http://www.micrel.com/_PDF/mic2026.pdf MIC2026] together with a [http://www.nxp.com/acrobat_download/datasheets/PCF8574_4.pdf PCF8574] connected to the I²C-Bus and have it all placed somewhere inside the case with two holes for the LEDs to have the USB-port still available. (The stuff with the holes etc. could be ''theoretically'' realized somehow with the [http://downloads.openmoko.org/CAD/ CAD files] ;-P ) | ||
+ | :--[[User:Jomat|Jomat]] 19:42, 8 December 2008 (UTC) | ||
+ | |||
[[Category:Hardware ideas]] | [[Category:Hardware ideas]] |
Revision as of 21:42, 8 December 2008
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Contents |
USB-Light
One thing that i like on my older phone, a Sony Ericsson W800i, is the light (camera light, but you can use it without the camera). So i thought about a solution for my Freerunner and the result is the following article. At least ⇒ At own's risk ;)
Idea
- Two leds
- Two resitors
- a miniusb B male connector
- a bit solder
- and a bit hot glue
and you have a light for your Freerunner :D
Instructions
Components
- 2 x white LED ultra bright ⇒ LED 3-2000 WS on Reichelt (german distributor for electrical components)
- 2 x 75 Ohm resistors 1/4 W ⇒ 1/4W 75 Ohm resistor on Reichelt
- 1 x USB mini B cable ⇒ AK 673-A USB mini B to normal usb connector on Reichelt
Schematic
German Wikipedia-article about the universal serial bus ⇒ http://de.wikipedia.org/wiki/Universal_Serial_Bus#Farbkodierung_und_Pinouts
Preparation
Cut the usb cable and seperate the rubber of the usbmini connector and remove the pins 2,3,4 (a lower risk of a short circuit). Now solder the components according to the schematic. WARNING ⇒ risk of a short circuit on the metal parts of the connector. Check the circuit without the metal part, if it works.