Coollvse OLED issue

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Doofer
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Coollvse OLED issue

Post by Doofer » Tue Jun 12, 2018 4:26 pm

Hi there. I bought one of those dinky 'Coollvse' ER9X boards (+1.3" OLED) about a year ago, and recently it rose to the top of my 'to do' pile.

TERRIBLE soldering on the board :o , I had to re-solder some of the microscopic resistor arrays in order to get all the switches working. Good for my microscopic soldering, but perhaps it was production quality that seems to have killed it for most people - I can't see them actually for sale anywhere now. A shame, as it's proved very easy to wire up into a slightly sub-Devo 7E-sized transmitter case. Also a shame, since I can't find any updated firmware for it beyond that which it came with! There is a compile of OpenTX that works with the board and display, but sadly not with several of the switch assignments.

Anyway, here's the odd thing:
coollvseOLED.jpg
ER9X splash screen on 1.3" OLED + Coollvse board
what the display looks like. Apologies for a not pin-sharp pic, but hopefully you can see that the left hand of the display lacks a few columns of pixels, which I think are instead down the right hand of the display.

When I tried the limited-function OpenTX firmware, this problem was not affected, which of course suggests there is something dodgy about the OLED board firmware, rather than it being an ER9X or OpenTX issue.

Anyway, if anyone has any suggestions about how to get the OLED image moved over a few pixels to the right, I would be grateful.

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jhsa
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Re: Coollvse OLED issue

Post by jhsa » Tue Jun 12, 2018 4:39 pm

You probably got an "Ar9x" board.. Er9x is a firmware, not a board :)
AR9X boards run Ersky9x and OpenTX as firmware.
Not sure OpenTx fully supports the Oled display.
You can try Ersky9x, which supports much more hardware on this board, so it will be probably work with that display.
You can find ersky9x at www.er9x.com.
Latest version of Ersky9x is r221. You need to install "ersky9x_rom.bin". also you should update the bootloader..

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MikeB
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Re: Coollvse OLED issue

Post by MikeB » Tue Jun 12, 2018 5:26 pm

Ersky9x supports a "Optrex Display" option that moves the display over by 4 pixels!

Mike
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Doofer
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Re: Coollvse OLED issue

Post by Doofer » Tue Jun 12, 2018 6:47 pm

Nope! Do google 'Coollvse ER9X' RCGroups coollvse, it tends to be named 'Mini ER9X' or similar. I suspect it is, as you say, named after the firmware loaded on it.

I could keep trying firmware compiled for other different boards at random, but since these boards are now, as far as I can tell, not on sale any more, I am concerned that loading firmware not compiled specifically for this board might brick it (e.g. allocate different pins for IO). So I guess I'm hoping there's someone out there who knows something about this particular board.

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jhsa
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Re: Coollvse OLED issue

Post by jhsa » Tue Jun 12, 2018 7:08 pm

Ahh, i didn't know about this.. it uses an atmega128A.. why the heck do they call it the name of the firmware?? :(

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Kilrah
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Re: Coollvse OLED issue

Post by Kilrah » Tue Jun 12, 2018 8:52 pm

Because Chinglish.
They mean ER9X-compatible, but that's too hard to say...

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jhsa
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Re: Coollvse OLED issue

Post by jhsa » Tue Jun 12, 2018 9:42 pm

lool :D
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Re: Coollvse OLED issue

Post by Doofer » Sat Jun 16, 2018 2:34 pm

MikeB wrote:
Tue Jun 12, 2018 5:26 pm
Ersky9x supports a "Optrex Display" option that moves the display over by 4 pixels!

Mike
Sounds like the sort of option that might work. Is there a 'reference schematic' for boards supported by Ersky9x, so I could check which pins are used for I/O (so if I try flashing my board with Ersky9x I don't risk bricking it)?

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jhsa
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Re: Coollvse OLED issue

Post by jhsa » Sat Jun 16, 2018 3:14 pm

That's the think, that board does not run Ersky9x as it has an atmega128 processor. It runs Er9x. Not sure if er9x supports that display.. You need Mike to confirm that..
we thought you were talking about another board..

João
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MikeB
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Re: Coollvse OLED issue

Post by MikeB » Sun Jun 17, 2018 6:21 pm

Can you compile er9x from the Github sources?

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Doofer
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Re: Coollvse OLED issue

Post by Doofer » Wed Jun 20, 2018 6:49 am

I'm sure I could try, if I can find the right OLED display driver option.
Presumably I could then define everything just the way I wanted it.
What could possibly go wrong? :lol:

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