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Hi All,

I think i have messed up my uBTIX version 6 ;-(

Installed Nextion Display and KD8CEC Software ver 1.200. I can't hear anything och dont have any reception. I have tryed to do a calibration but I cant get the rig to receive anything.? I have tryed to import factory settings but it didnt help either.? Any help are appreciated;-)

73 de sm0try

First, check your antenna connections inside the rig,then check all other interconnecting cables.make sure they are all installed properly, then

I would re-install your stock firmware and display if nothing else is wrong.
if your receive comes back, you might have corrupted the uploaded file to the ubitx by some weird chance.



73
David
ac9xh

Ulf,

That was just my take of it. Some here might have experienced the same problem,but since you put in a nextion display and uploaded different firmware, i would check the wiring ,making sure its 100% correct. then reload the software to nextion.Been awhile since i changed firmware on my ubitx v6,.if it still doesnt take care of it, i would re install the stock firmware and display. if the receive comes back, it means something is wrong with your upgrade to nextion display.

You might have a corrupted file?not a guru on software,just troubleshooting components,and such.

hope this suggestion helps. if not, Ask Evan, and others here who have lots more experience on this software matter.

73
David
ac9xh

ulf,

importing factory software, i believe,wont work on the nextion display since its for a tft display.

re-read post.so i believe you have to try the one of the older nextion software.. if it still doesnt work, rip out the nextion and go back to stock. after which install the n8me software for the tft.

73
David
ac9xh

Ulf,
on? you r screen you posted it looks like the spk is not highlighted. is it possibly muted for some reason? try plugging inn headphones to see if you have any audio at all.

73
David
ac9xh

Ulf,

Can you please give us a little more information on the status before you made the screen change, which files you loaded into the Nano, and if you replaced the Nano before the upgrade?

The times that I have seen this problem, it was one of 3 things:
1 - Loaded the incorrect software
2 - Replaced the Nano and with it the calibrations
3 - Inserted the Raduino one pin off into the mainboard.

To Track down a hardware issue, I would take a piece of wire and start at the input to the LM386 audio amp and work the way up to the antenna verifying that you have a change in volume of any noise coming from the audio.

73
Evan?
AC9TU

Thanks for Your reply all,
I have now bought a new Arduino Nano, ?I read somewhere that the pin should be soldered on the otherside of the board (sometimes). I just want to know if this needs to be desoldered or of it workshop out of the box. Picture attachés…

Have you per chance installed the wrong IF frequency. Early models ran 12mhz and yours is 11. If it worked prior then it is not a mechanical issue I assume? the tuning dial works?? The software package is configurable.

You are right that the pins are on the opposite side of "normal".??
--
73
Dave

Ok i will check the IF frq., and try desolder the pins or find?
lose pins to solden to the Nano … or try to order nano with lose pins via internet (takes a while) …

B4 I desolder any pin (or order a new Arduino) I tryed an Old Arduino and the original display and I actually heard a broadcast around frq. 3758 (?)?
I noticed that the heatsink on the Arduino board is VERY hot
The story continues…

73 de sm0try

So your radio is not dead.?

I would figure out what is not in alignment.?

Don't worry about the nano pins just yet.

The heat sink and associated voltage regulator do get hot.
My uBITX uses about 300ma on receive with a 2.8" nextion screen. Half of the energy goes through that 7805 regulator
--
73
Dave

Ulf,
I agree with the other Dave. If you hear signals with the older arduino, then your rig is definitely not dead. I would say 70% alignment,or software incompatibility,or30% arduino problem.

Dont solder or unsolder anything until you have everything up and running. you need base setting so you can compare previous to current. Check your if settings,etc. reinstall stock firmware and? get your radio back to original condition. then proceed to replace the display and the software.

Hi, I just replaced the (new one) Arduino with the original Arduino and screen, and then I got better reception. Is there any way to export calibration data from original Arduino and the enter it in the new Arduino? (Without changing SW in the old one)

73 de sm0try

Ulm,

You can load the KD8CEC firmware, use KD8CMC Memory Manager to read the calibration values and save them to a file. Then reload the original firmware.?

that is the only way to savdd we the original calibration.?

73
Evan
AC9TU

There are other ways.
Use a programmer to dump the EEPROM from the original Arduino and write that image to a new Arduino.?
I have a Nano set up as an "Arduino as ISP" programmer.

Gary,

Thank you for the method.? Do you have a link or other data on how to set up the ISP Nano, and the connection to the target Nano?

Thank you.
73
Evan
AC9TU

I did a write up on changing the bootloader for more available EEPROM space on a Nano.
/g/BITX20/message/85002
using the Arduino as an ISP.

The ArdunioISP code is directly from the sketchbook examples and there is documentation in that sketch.
some documentation in my write up, and a bunch of pictorial write-ups on line.

When I originally used a genuine Uno R3 as the programmer I didn't need a capacitor on RST.
The Nano (clone) I have set-up currently does require that cap.?

With AVRdude and the ArduinoISP, you can dump and load EEPROM, Flash and fuse.? So you can back-up and restore.
I gave some examples, just not examples for everything.? i.e. example on how to dump flash but not load it.
... figured a person could read AVRdude documentation.

Be very cautious on changing fuse settings.? You can brick the Nano where it can't be restored via ICSP.
(it can be restored, but you need a parallel programmer)
You don't need to change the fuses when just dumping or loading EEPROM or flash.

Using the programmer to dump EEPROM may not be the easiest path, but a generic path none the less.

Rgds,
Gary

Gary,

Thank you.? I will read up on the process.

73
Evan
AC9TU

Hi,
I can’t connect to original Arduino using KD8CEC MM, alwayd getting ”Error Receive Length”, wichever speed I am using…