Power for Hardware Mods ?

Thomas Seiler thseiler at gmail.com
Mon Jun 30 22:25:41 CEST 2008


Lets say I wan't to hook up sparkfun.com's sensor-du-jour to my
openmoko Neo1973, (and later Freerunner :-).
(i.e. something like
http://www.sparkfun.com/commerce/product_info.php?products_id=7918)

Ok, lets go:

I2C Access: Check!
    (on Debug Connector pin 18 and 19 and on Testpoints, as documented
in http://wiki.openmoko.org/wiki/Neo1973_hardware#Debug_Connector  )

Free I2C Adresse: Check!
    (http://wiki.openmoko.org/wiki/I2C)

Power: Not Good.
    Where can I take power from ?
    Is there a testpoint or pin of the debug connector that is
connected to the voltage regulator chip and where it is save to draw a
few milliamps ?
    (typically, such a mod does not need much power) Something that is
switched off when the phone goes to standby would be ideal.

    Sofar I have not found any information about such a thing in the
Wiki, which might explain why there have been so few Hardware Mods
till now.

As usual, any comments welcome!

Cheers,
Thomas

-- 
Excercise 17:
If the human brain was simple enough for us to understand we'd be so
simple we couldn't understand.
Prove this by induction.



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