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Beautiful work on the 3D printed case BUT: ?I was doing some testing with my QMX+ outside of the case and with any transmission the RFI interference caused problems that disappeared when I put it back into the case. ?You might want to cover the inside of the case with copper foil if you find you have problems. ?The metal factory case is metal for a reason.

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Don't I remember a diode symbol on the PCB, showing where the anode and cathode go? Wait, that's on a QMX and a QDX. QCX is older, but I'd expect the same...

73, Paul --AI7JR

Building my QCX Mini and came to this step over an hour ago! Lol

I’ve searched until I’m blue in the face…. Closest I could find was a builder’s note for Rev2 PCB, to orient striped end of the body of D33 in the hole closest to the edge of the PCB. ?
Is that correct for Rev3 also? ?

Thanks, Brent

-- 
Paul -- AI7JR

Joe,

Stan had it right: the QMX, when connected, presents a "virtual" serial port that works cross-platform. Most modern devices, whether running OSX/Windows/Linux or even iOS/Android, come with only USB ports (of whatever variety). "S" is for serial.

<PEDANTIC 3/4 truths follow:>Mac's run OS X which is based on Mach Unix, not Linux. I believe most of the userspace software that makes a Mac go is from the BSD world, rather than the GNU software generally used by the Linux kernel. But these are all systems that conform broadly to the IEEE POSIX standard which generally reflects the design of Unix, a trademarked creation of Bell Labs. So your Mac is definitely a descendant of "the Unix standard." (And so is your iPhone!) And serial connections (tty's!) are some of the most fundamental I/O concepts that standard contains.</PEDANTIC>

When I plug the QMX into my ancient (ANCIENT) Mac, it shows up in the terminal via `sudo dmesg | grep QMX` and is also visible as both an input and output sound device when I clock on the speaker icon for sound controls. Go to System Preferences -> Sound to see it easily. Then you'll know you have a working USB cable and that the Mac is seeing the QMX.

To figure out which Serial port it is offering, you can try decoding the "dmesg" output. Or, as Dan suggested, you can use the terminal to try doing an `ls /dev` before you plug it in and an `ls /dev` afterward. What new devices are present? On my box, there are two:

```
/dev/cu.usbmodem4201
/dev/tty.usbmodem14201
```

My guess is these are the handles my Mac is providing to access the QMX today.

I'm presently trying to install putty on my ancient Mac in the hopes of testing it out. It's taking forever (over an hour so far) and throwing warnings that my OS is too old. I'll report back if I get it going. For what it's worth, my default way to install putty is to use homebrew (). After installing homebrew (instructions on homepage), you should be able to get putty just using the shell command "brew install putty".

(On my Linux device it shows up as /dev/ttyACM0 and I can putty right in. Thank you for giving me the excuse to finally power up the QMX at home and install the latest firmware!)

To speak to your real question, though, I haven't tried any Mac software for controlling the QMX. I've toyed with a few applications under Linux, but not been crazy about any of them.