[E3-hacking] Line level conversion

[David Given]

I'm now the proud owner of a MAX232CPE, and hopefully I should be able
to breadboard up a line level converter tonight. Then we'll discover
whether I've fried my UART by plugging it directly into an RS232 port.

I can't seem to find, however, any consistency in the circuits I'm
supposed to use. The datasheet's standard circuit uses 1=C2=B5F capacitors;
Maplin's circuit in the catalogue uses 22=C2=B5F; the circuit here:

http://www.seattlerobotics.org/encoder/aug97/cable.html

...uses 0.1=C2=B5F. Hardware's not my strong point. Can anyone clarify? How
critical are these sizes?

--=20
+- David Given --McQ-+=20
|  dg@cowlark.com    | Quidquid latine dictum sit, altum viditur.
| (dg@tao-group.com) |=20
+- www.cowlark.com --+=20