Jerry,
1) I am not sure I will be able to assemble it, not willing to
touch a functional unit afterwards. I won't touch anything on the
QMX+ board, except to probe some analog voltage eventually and
injecting digital commands (like mimic encoders and pushbuttons).
Too risky already, I will surely make the magic smoke come out
fiddling. Could just testing the power without touching anything
else as first test, then add paddle and encoders control.
3) If SMPS alone and in itself is the TOE, well we will stick to
the SMPS but since V2 has them onboard, for the QMX+ alone that
make less sense to me.
4) This is somewhat? different on QMX, I preferred the QMX+
because size does not bother me and I hope it will be easier to
assemble. I have successfully completed a QCX on 20m, while a 30m
and 40m are still to be assembled, fearing the mod for the LDO. I
also have a QCX+ that I like very much.
Another thing that lead me not to choose the QMX, is that I would
like a version covering 40-10, it seems not easily achievable.
Alan,
>Record via COM or USB
I can use a Teensy, it has some ADC inputs, 10bit resolution, and if needed is fast.
Else I can use my multimeter, but I would need to create a program for it and it will be much slower (like some readings/s max).
Probably the best option is to have a DSO trigger on some kind of overshoot and capture programmatically(if I know what to look for of course, trigger options can't do AI yet),
Let's assemble the QMX+ I will start slow with a Teensy, a relay for the power and something to measure Power supply and current.
Any suggestion for a schematic for controlling a Mosfet instead of the relay, in any case with a opto-coupler? Which Current range should I monitor?
TIA
Giuseppe Marullo
IW2JWW - JN45RQ
