AVR-Chat

> ... http://www.mstarmetro.net/~rlowens/OpticalMouse/

Yup, a good link.  It lacks any concrete information on the Philips 
PLN-2020 - and nothing seems to be publicly available from them 
(consistent with my experience with Philips, which doesn't respond to 
tech requests), hence an attempt to reverse-engineer any hints.  The 
part is interfaced via SPI so, I suppose, I could watch that exchange 
with an analyzer; uggh.

I'm now thinking that the part I can't identify is probably a power 
supply.  It is surrounded (on the board obverse side) by a few large 
capacitors and two inductors, perhaps to pump the 1.5v AA-cell to 5v for 
the PLN-2020.

Thanks for your effort, Michael.


Tom