Hi Andreas !


<color><param>7F00,0000,0000</param>> I think you can make a good compromise between a

> simple optocoupler and IrDA. How about using Toslink?

> It is commonly used for optical transmission of audio,

> but you can transmit any data you want.


</color>That was also my first thought when I started to work on this.

However, with the new chip MCP2150 by Arizona Microchip it's 
very easy to implement IrDA and the IrCOMM protocol. Have a look 
at the data sheet !<FontFamily><param>Symbol</param>

<FontFamily><param>Arial</param>This has the following advantages over Toslink:


- cheaper

- standard; receivers included in most computers -> no extra 
circuit on the pc side needed

- we want bidirectional communication. If we use Toslink, we need 
2 Receivers and 2 Transmitters and 2 cables. This is needed for 
the calibration system.


Toslink or other plastic fibre systems might be very good for 
advanced, more complicated systems involving many channels. 
But I think in this case simple optocouplers and/or IrDA is cheaper 
and simpler.



Moritz<FontFamily><param>Symbol</param>





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Moritz von Buttlar
moritz@v...