Re: AE TimeMaster H.O. card

[mjmahon@aol.com (Michael J. Mahon)]

In article <20030323023935.10175.00000232@mb-fz.aol.com>, obsbedia2@aol.com
(Obsbedia2) writes:

><< It's a 3.6v NiCad battery of modest capacity.  Any wireless phone
>replacement battery of 3.6v voltage will replace it nicely.  Watch
>the polarity!  ;-) >>
>
>Michael,
>	Any such hack for NoSlot Clocks?  Seems like something should be
possible
>with
>a button battery.

The "No Slot Clock" is actually a re-branded Dallas Semiconductor
SmartWatch ROM socket.  It has two 3v lithium coin cells potted inside
the socket, and they are not easily replaced.  ;-)

There is, however, the possiblity of bypassing them and hooking up
an external 3v lithium cell (the two in the SmartWatch are in parallel,
ORed by two diodes to provide double the capacity and relaibility, not
double the voltage).  This is possible because the tiny PC board inside
the SmartWatch is accessible through the hole in the ROM socket.

It should be possible to cut a trace on that board and solder two wires
that could exit through the end of the socket and connect to an external
3v lithium cell (with a socket, if you are very optimistic  ;-).

I posted a link to a similar modification made on the RAM version
last October.  The link is to a posting by "our own" David Wilson:

http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&selm=david.916025791%40u513

Good luck!

-michael

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