>
> Couldn't this be solved by using a MAX232 or similar, looping the signal
> through itself for a voltage boost?
> Power would be taken from USB or PS/2 connectors (but then you could as
> well use a Wisp628 anyway).

 Indeed... The big advantage of the JDM is that if you have a compliant
serial port it works very well, and it costs very little (I bought one
premade for $12.50). Adding parts would make it work on more serial ports,
but would make it more expensive, and therefore less attractive to those
people that DO have a proper serial port.
 However, if the serial port doesn't provide enough voltage, it doesn't
work. This is very similar to the Wisp628, by the way: if the target circui=
t
doesn't supply enough voltage, it doesn't work either. However, usually it
is easier to fix the voltage of your target circuit than it is to fix the
voltage coming out of your serial port.
 Greetings,
Maarten Hofman.
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