[E3-hacking] Line level conversion

[Ralph Corderoy]

Hi David,

> I can't seem to find, however, any consistency in the circuits I'm
> supposed to use. The datasheet's standard circuit uses 1uF capacitors;
> Maplin's circuit in the catalogue uses 22uF; the circuit here:
> 
> http://www.seattlerobotics.org/encoder/aug97/cable.html
> 
> ...uses 0.1uF. Hardware's not my strong point. Can anyone clarify?
> How critical are these sizes?

Not my strong-point either, but here's another circuit diagram from the
Hardware Recycling Initiative to throw into the pot.  0.1mF.

    http://hri.sourceforge.net/tools/#uart

Cheers,


Ralph.