Latest revision as of 20:57, 11 December 2008

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[edit] 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 ;)

[edit] 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

[edit] Instructions

[edit] 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

[edit] Schematic

German Wikipedia-article about the universal serial bus ⇒ http://de.wikipedia.org/wiki/Universal_Serial_Bus#Farbkodierung_und_Pinouts

[edit] 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

* with the metal part of the connector

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

[edit] 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!

[edit] Examples

[edit] Images

[edit] Videos

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

• My version ⇒ http://www.youtube.com/watch?v=-qMmwOoLiZ8 :)

[edit] Improvements? Ideas!

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

I have three Ideas:

1. 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.
2. Use SMD resistors and perhaps even SMD leds
3. Adopted from this thread (german), you could use a MIC2026 together with a 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 CAD files ;-P )

--Jomat 19:42, 8 December 2008 (UTC)

The idea with the heat shrink tube sounds great. I will test it :) Yes with smd components it will be smaller :) The third idea is a bit risky. I like extensions :D Thanks for your ideas. --PatrickBeck 18:57, 11 December 2008 (UTC)