Duet 3 mini Menu Files

dc42

But DWC dose not have a menu section

It's called "Display and should be just above "Filaments".

lodger

Having re done a firmware update this morning I now have display section showing all my files correct..
Running a M918 in the terminal reposts correctly.
So now i am thinking it is a wiring issue. I will look more into it later . The boss is telling me i have to do house work first... : (

lodger

Ok Have been playing a bit . And i have the FYSETC Mini working fine . but not the ender 3 display.
I am guessing the Enders display is not ST7567 controller.

dc42

@lodger said in Duet 3 mini Menu Files:

Ok Have been playing a bit . And i have the FYSETC Mini working fine . but not the ender 3 display.
I am guessing the Enders display is not ST7567 controller.

Correct, the Ender 3 uses a ST7920-based controller, which is P1 in he M918 command, not P2.

Almost all the ST7920-based controllers I have seen are designed to work with 5V signal levels, although I have heard of similar displays working with 3.3v signal levels at reduced speed on other controller boards.

A final complication is that the pinout is different from the Mini 12864, so you would need to make up a special cable, or else modify the display.

lodger

Thanks Dave.

I am liking the mini Lcd so will print some thing up and use that.
I will sit down next week when i am at work and bored to figure out a lead to get the Enders Display working. If it will work being 5v. If not i will try and find a replacement.

I think a lot of folks will want this board on creality marchines.

Phaedrux

@Veti Had you gotten the Ender 3 display to work with the Mini5+?

Veti

i have not tried it.

Veti

just tried connect the ender 3 one and a standard 12864.

all i get is a high pitched noise from the buzzer. cant test more or my neightbours will be annoyed.

no display output.

Phaedrux

same here.

lodger

I did connect it up correct using jumper wires to get the correct pin outs .
But still have no success. I did not get much time to play more as the printer is at work. and i was busy.

I do think it is 5v issue but i will try mess more next week. as sometimes you can see some txt and the screen flashes on and off i bit.

On a side note i have found a larger ST7567 controller based RGB Screen .looks the same layout and size of the Enders. I have ordered it and will report back if that works.

jay_s_uk

@lodger try reducing the SPI speed. To something like F100000 (add that to the M918)

dc42

Here are some notes I made when I was looking at this:

EXP2 is the same on the Mini and the ST7920 display but reversed between them.
EXP1 is also reversed but has the following additional changes
The 3 Mini has LCD_A0 where the RRD display expects CS. This is handled in firmware - the firmware uses A0 as CS when a type 1 display is configured in M918.
The Mini has LCD_RST (which the Mini just ties high through a pullup resistor) where the type 1 display expects SCLK
The Mini has the CS pin where the type 1 display expects MOSI
ENCA and ENCB are also swapped, but that doesn't matter, you can change the direction in the M918 command

So I think the easiest way to drive the display would be:

Reverse the connectors at one end of each cable
Cut the conductors in the EXP1 ribbon cable that carry LCD_RST and SPI2_CS2 from the Mini to wrong pins on the display
On the display add links to carry MOSI and SCK from the EXP2 connector to the correct pins on the EXP1 connector

I have not tested this.