I'm currently working on an Arduino project to control my KAT500 by
sending commands to the PC Data port when various relay closures are
detected. From examining the schematic of the KAT500 it would appear
that the PC Data RX line will actually work with logic levels of +5(?)
and ground and the TX line will produce +12 / ground outputs. I'm
thinking there's no reason to fool with RS232 conversion or to try
driving the PC Data with a USB to TTL converter when some simple
buffering and level shifting of the pins of the Arduino itself will do
the job. I'm pretty good with hardware but hopeless with software, so
keeping things as simple as possible will be a good thing.Has anyone out
there done direct digital interface to the KAT500?
73...
Randy, W8FN
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