VDI-RODERICO

[waltr]

Also, try putting the display back on the board it worked on. I have had these display simply DIE. Two that died I troubleshot and found the charge pump chip on the display died. Found a replacement and got them working again.

[waltr]

Also, try putting the display back on the board it worked on. I have had these display simply DIE. Two that died I troubleshot and found the charge pump chip on the display died. Found a replacement and got them working again.

Ignore this:
I posted without seeing that it is now working with different firmware version.

Great that it works.

[Wiltran]

Hello Roderico, any chance you might have a negative version of the vdi-pcb-pdf.2.2? I tried downloading Kicad, and it wont install because Windows wont accept the digital signature,thanks.

[roderico]

yes no problem, I have just exported the negative image of the pcb to pdf with a newer version of kicad and in principle it looks fine, see the attached file

[Wiltran]

Thanks Roderico, yeah, I tried downloading Kicad from 3 different locations but Windows would not accept the digital signature. Kicad looks like a good program, it has the negative output that I use for making circuit boards. Now all I have to do is get a graphical display. thanks again!

[roderico]

Kicad should work at least up to Windows 10 according to https://www.kicad.org/help/system-requirements/, you might have also found this page https://www.kicad.org/help/windows-d...-verification/ or maybe someone that is using kicad in windows knows what the problem is, but if somehow you manage to install kicad then you can easily customize the pcb, e.g. push buttons, display connectors, pcb size, and so on. For the display I would suggest a ST7565/ST7567 (8080 parallel interface 5V) because they are lighter than KS0108 displays and you can find them in the same sizes e.g. 71x57mm but all of them should work well, wltr even made it work with an OLED display

[Wiltran]

Hello Roderico! I am trying to connect a Zolen parallel ST7565p display. the pins on the display are as follows:

1-8DB0-DB7
9 Si, VDD,+5v
10 VSS-ground
11 backlight power supply+
12 chip select /CS
13 /RST reset signal (low effective)
14 A0 D/I data/instruction select
15 /WR write signal
16 /read signal

My questions :
do K-, A+ and VEE have to be connected?
does backlight have to be connected to view in the daylight?
what does V0 connect to?
what connects to CS1 and CS2?
what does RS and EN connect to?

thanks

[roderico]

Hi pins are shared by different displays, e.g. CS1, CS2 in KS0108 are CS, RST in ST7565, pin RS is no used in ST7565 and so on, V0, VEE, RT1 are for KS0108 contrast, not used in ST7565. You don't need the backlight during dayligth but you can have the backlight control if you connect pin 11 to A+ pin, just match the display labels with the schematics labels, e.g. pin 16 would be RD, and pin 11 would be A+, the others as you already wrote

[Wiltran]

So for use with the ST7565 display the VDI board CS1 and CS2 are connected to ST7565 display pins CS and RST?

[roderico]

yes, the pinout would be (I included the pin numbers you wrote in parenthesis)

KS0108-> ST7565

VDD -> VDD (9)
VSS -> VSS (10)
V0 -> ---
CS1 -> /CS (12)
CS2 -> /RST (13)
/RST -> A0 (14)
RW -> /WR (15)
RS -> ---
EN -> /RD (16)
DB0-7 ->DB0-7 (1-
VEE -> ---
A -> LEDA (11)
K -> ---

you don't need V0, VEE, RT1, contrast is controlled by the firmware

[Wiltran]

I'll try it Thank you!

[Wiltran]

Zolen

Hi Waltr I have a problem with my VDI module. I connected the Zolen display to the PCB as follows: 1-8 on data port, RD-RA5, WR-RC4, D / I-RC5, REST-RC6, CS-RC7, VDD- + 5V, VSS-GND, A + on the pcb A+. But the display remains black. The hex code is loaded correctly ВДИ_СТ7567_П18Ф26К22_РР40. Am I wrong somewhere?

Hello Zmaj! I am also using the Zolen display. Did you find that these connections are all correct to the Zolen display? Is everything working correctly?

[Wiltran]

Hello Roderico, I am having trouble with VDI starting reliably. I can only work VDI after I hit the reset button. Zmaj is using Zolen display with different connections than you have indicated. I have tried different versions of code RR40, RR35 etc. The display sometimes is mirrored!. What are the basic settings to start with, -90,90, XY offset. please help.

[Wiltran]

Please disregard previous messages, I had the VDI configured wrong!

[zmaj od nocaja]

Hello Wiltran.
Zolen display work perfect with this configuration :
1-8 on data port, RD-RA5, WR-RC4, D / I-RC5, REST-RC6, CS-RC7, VDD- + 5V, VSS-GND, A + on the pcb A+


and with this hex code
ВДИ_СТ7567_П18Ф26К22_РР40