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VisorCentral.com (http://discussion.visorcentral.com/vcforum/index.php)
- How To / Troubleshooting (http://discussion.visorcentral.com/vcforum/forumdisplay.php?forumid=2)
-- Serial cradle schematic (http://discussion.visorcentral.com/vcforum/showthread.php?threadid=2175)
Does anyone know where I can find a schematic for the serial cradle? I downloaded the developers kit, but that just had mechanical information and pin assignments.
Thanks!
Check out this thread for details on how one person converted their USB cradle to a Serial cradle.
http://discussion.visorcentral.com/...TML/000090.html
There is a link to a schematic. After the person did the conversion they received their serail cradle from Handspring, and it was very similar to the conversion.
I built a serial cradle from this schematic. I put a push button switch on pin 3 of the visor that momentarily grounds the pin, this is how the visor knows to start a Hotsync. So you can have instant Syncing, like the real cradle. I also used a 78L05 regulator instead of a 7805, (be careful of the schematic because the 7805 pins are numbered wrong.)
One more note, you can buy a connector that plugs into the bottom of the visor from ATL Technology. www.atlconnect.com for about $3.
Justin
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