From: Moritz v. Buttlar (info_at_baltic-microsolutions.de)
Date: 2001-02-04 15:56:32
Hi !
I´m currently trying to add to Joergs design the following options:
- battery operation (4 mignon cells, rechargeable, 4.5-6V, operation >12 hrs)
I want to connect the battery directly to the circuit without voltage
regulation. Or is this a bad idea ??
- Irda communcation. I´m currently looking for parts. Speed up to 115kbauds,
distance 1-2m. Joerg: is this fast enough ??
The components will cost <10$. I´ll also add a circuit diagram for a
RS232<-->Irda interface for all the people who don´t have irda in their pc.
I first wanted plastic fibre, but I think Irda has the advantage of most
modern notebooks having already been equipped with Irda.
It can be updated later for 4Mbps operation !
- the design will consist of 2 circuit boards: analog and digital.
This allows an update of the different parts independently. Also different
versions, e.g. dc-dc converter and regular rs232 for people who prefer that.
The goal is to improve safety of the design. Please write me if you have any
suggestions.
Moritz
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