开云体育

hi
I have searched this thread but can not see the 5" hmi file?
can you post that please
cheers
Matt

LM386 is 12V and 386-4 is 18V AFAIK.

Just change your chip..

Raj

AWESOME!!

On Sun, Mar 24, 2019 at 06:44 PM, Kelly Mabry wrote:

I have an extra 10k linear pot?in the junk box

You might be able to place a resistor from the low side to the center of the potentiometer to approximate a log pot.?

Here is an example article.


Tom, wb6b

Thanks Raj
best 73
Pop
VU2POP

I can think of removing R71 and feeding 9V via a regulator to the LM386 chip.

Raj

Good call. I was setting my voltage at 13.8. I'll dial it down.

Aha. See my post a few minutes ago. I had the black rectangles on power up, although I was not sharp enough to notice if it was only the top line or both lines, then the display went blank. So wherever your solution lies, I think mine probably does too!

Pat Anderson
KD7OAC

I completed my build yesterday, and powered it on this afternoon. No joy.?

Instead of a frequency display, I got black squares, then the squares disappeared and the display went blank? We checked the power, there was 12 volts everywhere there was supposed to be. So I searched this forum. Seems I am not the first to encounter the black squares, although nobody else mentioned the display going blank. There is a thread that was started in 2017 about the black squares and had some posts as recently as late last year. There was a suggestion that the Raduino was displaying squares because it had not been programmed. Hard to believe that a unit would have been shipped by HF Signals that had not been programmed with the generic sketch because the web page says it has all been tested: "The assembled boards are then DC checked and a final RF check is performed to check the receiver’s sensitivity as well as transmitter’s output before being shipped."?Some folks vaguely suggested all the files needed were "on this site," but others responded that the problem was too many files, many of which were out of date. In fact many of the responses suffered from incredible vagueness. But the main suggestion was to install the amunter sketch (Allard), with a link to Github. The link was out of date and returned a 404 error, but I Googled and did get to amunter's Github page.

I have the Linux version of the Arduino IDE installed, but found nothing that looked like a file I could I could load, compile and install to my Raduino. There were references to libraries and "include" files that were not there. i do not see what I am supposed to do with what is on the amunter Github page(s). I do not want to make hardware modifications. I just want a sketch that I can compile and install to an unmodified out of the box bitx-40.

If you have encountered the black square problem and overcome it, please respond, either on the forum or by private message. Also, thoughts about why the display went blank after displaying the black squares. I really don't need more vague suggestions as in the 2017 thread, I am sort of looking for a cookbook step by step solution! I have to believe it exists!?

Thanks!

Pat Anderson
KD7OAC

Thanks for the reply. I just happened to have a spare LM386 on hand so I put it in and it solved the problem. Not sure why the first one went though.

Randy

Kelly.

The volume control should be preferably LOG or 10KA

Raj

Check the volume control with a meter!

Playthatbeat Mrdjp: I noticed that as well with the wires and connectors.? Luckily I had red black and green wires of 22 gauge and larger for use with my build.?
On the front panel board I didn't use the relimate connectors, I used the right angle pins supplied with Sunil's kit (the Nextion display enclosures). And thank you, I remembered a couple of items I need to check; my grounding of the ubitx circuit board to the case needs to be verified also. Thanks everybody for the ideas. I will systematically? address all of these in the morning? when I go out to the workshop

73,

Kelly K5AID?

I meant to say I had to press the tuning knob onto the encoder shaft very hard...

Kelly K5AID?

My volume control was wired backwards... my encoder was fine initially; I somehow fouled it up; I remember now having to press very hard to get it on the encoder shaft... so if I used too much pressure, then that MIGHT explain it's strange behavior of jumping into and out of menus randomly, if I broke the pushbutton inadvertently. I have an extra 4 pin harness with connectors ready.

I ordered 2 replacements from digikey just now. reference # PEC11R-4020F-S0012-ND. This is the direct part number as per this thread.

I have an extra 10k linear pot?in the junk box?that I can replace the volume pot with... hopefully we can get things fixed up in a couple days.

73,?

Kelly K5AID?

Dave the reason you were told the yt100 won’t work with the uBITX is because the FT-857 and other radios listed talk directly to the tuner via the interface cables to activate the tune function.
The uBITX doesn’t have that capability within the various software/firmware that is presently available. Now if you can write a Arduino sketch that can duplicate the tune function of the FT-857’s then all you would need to make would be the interface cables between the uBITX and tuner.

Skip Davis, NC9O

When I assembled mine, it would would tune the opposite way than I intended so don't feel bad. To prevent damaging anything when by re-soldering the wires yet again, I used a miniature flat-head screwdriver to remap the wire connections on the plug side. Pressing the exposed tang on the side of the pin allowed its removal.
-Tom
KF5NWC