====== 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 => [[http://www.reichelt.de/?;ACTION=3;LA=4;GROUP=A5332;GROUPID=3019;ARTICLE=26496;START=0;SORT=artnr;OFFSET=16;SID=28SA7h56wQARwAACk@Bmsa794de820d10a89112a12211e64ae497|LED 3-2000 WS on Reichelt (german distributor for electrical components)]]
  * 2 x 75 Ohm resistors 1/4 W => [[http://www.reichelt.de/?;ACTION=3;LA=4;GROUP=B1112;GROUPID=3063;ARTICLE=1466;START=0;SORT=artnr;OFFSET=16;SID=28SA7h56wQARwAACk@Bmsa794de820d10a89112a12211e64ae497|1/4W 75 Ohm resistor on Reichelt]]
  * 1 x USB mini B cable => [[http://www.reichelt.de/?;ACTION=3;LA=4;GROUP=C6992;GROUPID=3348;ARTICLE=45361;START=0;SORT=artnr;OFFSET=16;SID=28SA7h56wQARwAACk@Bmsa794de820d10a89112a12211e64ae497|AK 673-A USB mini B to normal usb connector on Reichelt]]

==== Schematic ====

{{:openmoko:usb_light.png|}}

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.

without the metal part of the connector

{{:openmoko:soldering_without_connector.png|}}

with the metal part of the connector

{{:openmoko:soldering.png|}}

with hot glue (i know its not very beautiful, but it works, it's robust and i have no short circuit ;)

{{:openmoko:light_hot_glue.png|}}

==== Software ====

When i searched for a good solution to activate the host-mode of the freerunner i found this blog entry 
  * [[http://blogs.thehumanjourney.net/finds/entry/usb_host_mode_the_button]]
Joseph Reeves modified his usbmode-button package after a few suggestions by me and here is his new blog-article with Version 0.2
  * [[http://blogs.thehumanjourney.net/finds/entry/usb_mode_button_0_2]]

Thanks Joseph Reeves :D

You can toggle the host-mode on and off with a click on the icon.



===== It works! =====

==== Images ====


{{:openmoko:cimg3380.jpg?200|}}

{{:openmoko:cimg3379.jpg?200|}}

==== Videos ====


  * Freerunner in broad daylight => http://www.youtube.com/watch?v=iK5w-OHSm9g
  * Freerunner at night => http://www.youtube.com/watch?v=f2H4QZq2xxE

==== Improvements? Ideas! ====

It works but it's not very beautiful, perhaps you have any ideas. Mail me :D