Re: IR Question

["Dan" <dtoma@xxxxxxx>]

> Do you recommend a part number for said NPN transistor, that I can get
from
> Maplins??  Also, remind me of the URL for the circuit to get
Autom8it to
> learn the IR Commands.  Can these go on the same COM port??

I don't know Maplins... I am in Romania, but you can use ANY NPN
transistor. The cheaper ones, in plastic case are perfect, like: BC171,
BC172, BC173, BC174....


> Ian, am I right in saying that R7 is the bus terminal on the TX
board??

I don't think it is realy a bus.. just a bunch of output devices connected
to the same line.

Just one remark... you need a pull-up resistor too, if no other is
abailable on the bus. This can be considered as a terminator.
As the COM port does not have a permanent +12V signal, is better to put the
pull-up resistor to the input of one of the oiutput transmitters.

Dan

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