开云体育

I am finding the brightness of the QMX display to be too high. I want to increase R306 (33 ohms) to lower that.??I'm thinking about 100 ohms. Any other suggestions as to what would be a good starting point?.?
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73, Dan? NM3A

I think I use 120 ohms in my builds.

-mike/w1mt

Check for contact between pin 3 on the LCD module, and the inductor housing, on the power supply board above it. This will cause the backlight to wash out the display, like you are describing.?

Dan, take a look at this thread. You may be having the same problem. /g/QRPLabs/message/107812

Rick,

I think he actually means it's too bright. I have changed the limiting
resistor on every QCX-mini and now QMX that I've built. Just too
bright, especially at night. No, I don't have the pin 3 touching the
inductor.

-mike/w1mt

Mike, I'm glad to have learned that I can adjust overall brightness by changing values of R306. If I want to adjust this in the future, I now have some values to try. 73

Just put in a 120 ohm (leaded) in place of the 33 ohm. Much softer and it's fine, but could have even gone to 150 or 180. Thanks for the info.?

BTW, I did not remove the 33 ohm, I just cut the one trace from the 33ohm to the pad.?
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73, Dan? NM3A

Rick, was not an issue with the inductor/ pin 3, just brighter than I wanted.?
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73, Dan? NM3A

Are there any experiences or thoughts regarding the blue vs. yellow displays? Does the blue appear less bright to the eyes? Any opinions regarding readability with old eyes? *(They both look pretty readable in the photos and videos, compared to my (tr)uSDX!

I'm about to place my QMX kit order and I've been contemplating the two display options.

Thanks and 73,
Cal -- AD8Q

Hey Cal -?
Tried to look you up via QRZ to ask you a question about the AT-100M.
Here it is:
For Function #10 "Calibration" what setting do you use for 20W radios such as the Xeigu G90 or FX-4CR?
It's not 10w but it's not 100W either?
Thanks
Gregory
AC1NY
Boston

Hi Gregory,

There is a 40-watt version.??


If you already have the 100-watt base, you can look up the N7DDC GitHub or the following manual:


Specifics will have to come from others.

There is a 开云体育 for the ATU:
/g/ATU100

73
Evan
AC9TU

Question for Hans, are there any plans to be able to control the LCD display brightness in software?? Superficially it seems easy to drive the LCD_LED line with a PWM output which can be adjusted in software to set the brightness.? The existing Backlight ON/OFF setup could be changed to set a number 0-99 maybe.

Or is there a killer? The timer or PWM registers already in use?

Chris, G5CTH

Thanks Hans,

I'd tried tracking through the labyrinth of documentation about this but it's very difficult without spending a shed load of time deciphering it.? It it's not obvious it isn't worth it.? I'll just change the resistor.

Thanks again,
Chris, G5CTH