NIVONA Caferomatica 830 Coffee Machine: Damaged Display Repair, AliExpress Replacement

satanistik wrote:

As for the break - it does not have to be a matter of display only the control method used in the meter. The espresso on each line addresses the new one using a special command, but there are several other modes.

Ok. Thanks. I am bothering about this matter because I saw that in the meters after replacing, for example, ssd1309 in the inverted image, in some there was also a gap and shift of the last line to the beginning, and in others not. In this post, which I gave above, the image in the meter after reversal is ok. Therefore, it seems to me that it depends more on the display eg ssd1305 vs ssd1309. I wonder what he has inserted. If we fix the problem of the lack of these lines, the issue of Nivona displays would be solved in 100%

And this is what it looks like at the end. The most annoying, however, is the bad addressing. Not because there is a break, but because I can not do it: / In use, however, it does not bother me in any way.

Generally, I've devised how to do addressing - you need to find the command responsible for addressing the page - it is in pdf. It is sent at the beginning of the next line. Later, it would be necessary to block 4 measures of the WR line. It would cause the omission of the first 4 vertical lines but all the others would be ok. A more complicated way is to use the CPLD system and then skip the first two and the last two lines. It would have been possible to do at the gates and the counter, but it's a big deal.

There is still some space on the plate In case I am ready to test. I am still tempted to buy SSD1305. In the specifications I see that it has a resolution of 132x64, but they write differently. You would have to solder 1305 and check if there are missing lines in the reverse.
One day I have to do pads for SSD display, because I can't find anything in libraries. Or maybe you have some ready / library / to put in Eagle to use as a connector for SSD1305 and SSD1309 for soldering?
Solder SSD1305 is shown here https://www.eevblog.com/forum/testgear/replac...lent-u1253a-multimeter/msg2302683/#msg2302683

Approx. I already made the library.

I created a board for SSD1305, SSD1309 and I leave files for children along with my connector library.



I have increased the laminate size to the original size. In the original there are indentations from 3 sides and holes for dowels, but this is to be done by hand. There is a free space on the laminate to do this.

Satanistik, have you seen this solution on sst39vf040? https://www.eevblog.com/forum/testgear/replac...agilent-u1253a-multimeter/msg2429577/#msg2429
It also works, but somehow less stable

Try to delay the WR signal as in my system, which should improve stability.

satanistik wrote:

Try to delay the WR signal as in my system, which should improve stability.

But you probably need to put in a new chip. Yes, I just tested this circuit out of curiosity to see if it works If it was flying on one chip, it's much less combining because only on D0 you need to break the continuity of the path, and all the others pin on the soldering points of other tracks.

But since the colleague already built this system, you could check how it will behave. All you have to do is in the spider 2 goals not in a row or use a different tile and only connect WR.

Ok. Tomorrow I will check and let me know how it works.

Checked. After connecting W / R through 4071D through 2 gates, it flashes until it's nice. Previously, he sometimes did not start or was able to display some strange pixels.

A strange silence in this topic. We've already figured everything out? I will fill up some material. The ssd1305 display fits under the original ssd1303T10 pins and, most importantly, no problem with the lines. However, it has a reversed image. This is how it looks after soldering in place of the original.



I think that after using the repeating system created by Satanistika, the display will be like the original only in yellow. An alternative to the previously-transferred ssd1303, which disappeared from the market. Sure ssd1305 in other colors will also be found but somehow I like yellow the most .
How to get to me plate with connector under ssd1305 31pinowym to attach the picture.

With buydisplay by ebay https://www.ebay.de/itm/Yellow-2-4-inch-OLED-...1305-w-Tutorial/302040688393?ssPageName=STRK% 3 AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
I would not be myself if I did not check whether it works with a reversal so I will probably check it in a week or two and let me know. It is a pity that these ssd1305 are also less and less You need to look for taobao.

It's ok when you reverse the image. Everything is displayed nicely without missing lines. However, after a dozen seconds the image starts to flicker slightly. It's only visible, but when you look at it, you can catch it. Probably some mistake in the design of the tile. Maybe for thin paths In summary, using the Satanistika system, ssd1305 is a 100% alternative to ssd1303.

Test my concept on the inverter circuit. The mass field on the 2nd side is also not an ornament.

You mean the distribution of the inverter section elements because I can see that you have left the elements probably the same? I noticed that when I put my finger on the display pins, the image stabilizes, so there is probably a power problem. In my free time I will check with power supply cables. I also ordered tiles from your project because one shipment. I haven't soldered them yet.



I soldered your plate. Everything ok, but you have run away from the path number 7 IC1 (mass). As you led the path, its connection probably hid somewhere and there is no connection on the finished board. You have to insert a tiny prosthesis. In general, the tile looks very nice and professional.
As for ssd1305, with these resistors the inverter does not produce voltage. After turning the display on, I have VCC 11.4 V. You would need to confidently modify the resistor values. If I touch the resistor R1 (114 k?.) this voltage jumps to 15 V and then the display works without a problem. Instead of 114 k? I gave 120 k? and maybe there is a problem here

Maybe - I do not have an espresso machine anymore, I made this arrangement for a friend. Can you give a picture of a folded tile?

The layout itself is sensational. When designing the paths in the Eagle, only this path escaped you and therefore it is not in the gerber files for production. This leg has no connection on the tile itself



I'll do a photo of soldered soon, I will join the post

I added

Is there anyone here who will fix my display?

My espresso machine has faded out the display syndrome. Please advise where and what display to buy, I have the machine and the plate.

So how? Zero new ideas? It is true that I have already bought a new espresso machine but this one would seem to give up my mother-in-law if everything works outside the display. Someone something?

Hello.
Could you please give me the last scheme in which I can make a circuit board in a specialized company.Exactly like the one in the last post of Amigos.
And which display to buy from Aliexpress with short or long cable?

thanks

And in what format do you want this scheme. In Eagle or Gerber format ready to order? Personally, I recommend the Satanisticka design more because it is more stable and the spd0301 displays are still available. In my design, ssd plates need to make a thicker ground path with TPS61045. But even then the picture is not stable. You would have to convert the FPC board to a 31-pin connector. Satanistick rightly pointed this out to me. I have already corrected and in the files above there is an improved version for Eagle. Under spd0301 you had to apply 2 patches and Satanistick probably already made them. I think he will throw in his final project

Watch out for ssd1305 displays. I bought here https://www.ebay.de/itm/OLED-Display-Module-2...arallel-SPI-I2C-SSD-1305-1-Stuck/312508295042 and unfortunately. The image is like on spd0301. If anyone wants ssd1305 it is best to buy here https://www.ebay.de/itm/Yellow-2-4-inch-OLED-...erial-SPI-I2C-SSD1305-w-Tutorial/302040688393. Apparently the first one is a fake.

satanistik wrote:

In general, I have considered how the addressing should be done. You need to find the command that is responsible for addressing the page - it's in PDF. It will be sent at the beginning of the drawing of the next line. Later 4 clocks of the WR line would have to be blocked. The first 4 vertical lines would be omitted, but all others would be fine. It is more difficult to use the CPLD circuit and then the first two and the last two lines are skipped. That would have been possible with gates and counters, but it's already a big circuit.

Thank you for your genius = D
I see something again!

I would like to solve the line problem with a CPLD. Since you already have a plan, can you please draw me a timing diagram?
I would design and provide the CPLD program and board.

Ok, I'm still on it. Boards with CPLD were ordered. I try it first via the offset command.
Will then be the end of the month ...

Hello, did anyone try to read the processor located under the display?
best regards

Yes. Read-protected
Attached, I provide the checked, improved and stable design of the SSD1305 and SSD1309 display board. Project based on the Satanistik solution. With SSD1305 it works like the original SSD1303, while with SSD1309 traditionally no 2 vertical lines. Files in the Eagle and Gerber format.
Due to the questions, I would like to inform you that 120 kΩ may be used instead of the 114 kΩ resistor not available The coil, diode and TPS61045 can be used from an old board.

Project corrected.

The Satanistik design is for the SPD0301 display with a 24 pin socket, and my design is for the SSD1305 and SSD1309 display. Both work. Depends on what display you want to buy. You had to order both projects;)

micassu wrote:

Ok, I'm still working on it. CPLD plates have been ordered. First, I try using the offset command.
It will be then at the end of the month ...

It would be nice if a comprehensive solution was shown. I'd like to test

Hello forum users, and I join the topic.
Look at this link
https://www.aliexpress.com/item/4000261990748.html?spm=2114.12010612.8148356.3.42db6c34ODderT
Looks promising.
Best regards.

Display on the SSD1305 controller. You will probably have to rotate the image anyway. The question is whether there will be no lines.

I will order a tile from post # 173 + this display and we will see.

I have already ordered in China. I look forward to everything. When I check, I’ll write what happened.