I made this: https://github.com/n1kdo/KPA500-remote
It uses a RS-232 transceiver (MAX3232 or similar ADM3202ANZ which is significantly cheaper) https://github.com/n1kdo/KPA500-remote hardware design here: https://github.com/n1kdo/pico-w-dual-serial The code understands most/all KPA500 commands (as well as KAT500.) Jeff n1kdo > ---------- Forwarded message ---------- > From: Randy Farmer <w...@windstream.net> > To: elecraft@mailman.qth.net > Cc: > Bcc: > Date: Fri, 3 Jan 2025 12:02:16 -0500 > Subject: [Elecraft] Direct data input to KAT500? > 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 > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
