VDI-RODERICO

[roderico]

I would suggest you build the latest version v2.2 with MCP604 opamp and ST7565/ST7567 display (8080 parallel interface 5V) these are lighter than KS0108 displays.

schematic: https://www.geotech1.com/forums/showthread.php?23823-VDI-RODERICO&p=269449#post269449

you can generate geber files and/or adapt pcb size, connections, etc. from:

pcb: https://www.geotech1.com/forums/showthread.php?23823-VDI-RODERICO&p=269544#post269544

videos as SWL mentioned are easy to find in the thread (look for kroman01 he made lots of high resolution videos).

I have tried different ST7567 displays and found that contrast needs to be fixed to be able to use them, below the firmware that centers the contrast to 50%, you would first try with RR40 (tested with zolen display) and then with RR35 (lower regulation ratio) if you cannot adjust the contrast with current firmware:

[SWL]

You read the topic .. Is it so difficult?

[nikko10]

Who filmed the video of the indicator? It's interesting to see how it works

[nikko10]

Good day to everyone! Guys, I apologize for the request .... I want to collect this VDI indicator, but I do not know English, I have to translate each message on the head with the help of a translator. :
1.SCHEME
2.PAYMENT (LAY, DIP TRACE)
3.FIRMWARE
4.What indicator is used
For this gerber board from the author. Many thanksGerb.VDI roderico V2.2 with 3.3V.zip
Is it possible to collect all this for me in one archive ??? THANKS !!!

[Sulfid76]

roderico everything worked as it should! Swapped X and Y positions. The vdi scale turned out to be correct. Good!

[Qiaozhi]

родерико все заработало как надо! Поменяли местами X и Y. Масштаб vdi оказался верным . Хорошо!

Please read the forum rules -> Basic Rules of the Forums
and make your posts in English.

[Sulfid76]

родерико все заработало как надо! Поменяли местами X и Y. Масштаб vdi оказался верным . Хорошо!

[roderico]

it can be seen from LED or GLCD versions...

I meant LCD or GLCD versions...

[roderico]

ok, also if you find many false signals, check the voltage at pin 5 or 3 of MCP602, it is assumed to be 2.49V in firmware v1.x and 2.50V in version 2.x, 2.5V is always true if using MCP1525

[Sulfid76]

roderico D1 and D3 ok! Version 2.x tried it, everything is fine . I think just swap places on the board D2 and D4,on the table works adequately, the target is the LED lit up in the correct range VDI).Thanks for the project!

[roderico]

Hello, are D1 and D3 ok? version v1.x is not very reliable because as it can be seen from LED or GLCD versions vdi numbers have big errors many times (e.g. >5), this means that in the vdi led the boundary between D1, D2, D3, ... is not sharp and you would have alternate led flashing, it would be better if you could give it a try to version 2.x the changes in the pcb are trivial, and you can adjust the discrimination with the trimmer, e.g. with a nickel coin vdi~20 you can have one led for vdi > 20 +/-5 and the other for vdi < 20 +/-5, with a small foil vdi > 0 +/-5 and vdi < 0 +/-5, and so on

[Sulfid76]

Hello roderico! Collected vdi led(4 led firmware). Thanks you! But it turned out D4 on for 0 <= vdi < 20 , D2 on for 45 <= vdi < 90.
Why could this be?

[roderico]

RA8808 should work with KS0108 firmware and not with S6B0108 firmware, could you make this test: flash KS0108 firmware and connect S6B0108 display (it should not work), and then connect the SN74HC14 on CS1 and CS2 and it should work. If this is the case, then KS0108 firmware is the same as S6B0108 but with inverse logic for CS1 and CS2, i.e. what you need for RA8808

[kroman01]

Currently, I do not have displays with KS0108 only S6B0108 and I can not check the interchangeability the fact is that the software on S6B0108 does not work with the display on RA8808 only the earlier test version works

https://www.geotech1.com/forums/showthread.php?23823-VDI-RODERICO&p=259362#post259362

[roderico]

ok I see, then the two firmwares you are using should be identical for both to work, I have just tested the latest firmware in a S6B0108 display and it works for me, then I flashed KS0108 on the same display and it does not work as expected, are you sure you didn't use the same firmware file for both tests?