Randy; It just might be easier to use one of the MAX232 derivatives (MAX2232 comes to mind) rather than play with level shifting. With the 2232 you will need the chip and about 5 small 0.1uF capacitors. I’m sure that someone sells an Arduino shield that does the task and is already built.
Software? That’s easy. But then I’ve been doing it for 50 years or so… You might want to communicate with Andy Durbin, K3WYC about the project. He has something similar that he uses in his shack to handle the KAT500 and the KPA500. Andy’s email is a.durbin(at)msn.com <http://msn.com/>. 73, Jack, W6FB > On Jan 3, 2025, at 11:02 AM, Randy Farmer <w...@windstream.net> wrote: > > 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 jackbrin...@me.com ______________________________________________________________ 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
