reTerminal DM Getting Started | Seeed Studio Wiki

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reTerminal DM Getting Started | Seeed Studio Wiki

reTerminal DM Getting Started

https://wiki.seeedstudio.com/reterminal-dm/

[Owizmi]

How I get more detailed datasheets for IO connector.

[themzlab]

I have the same question. I looked in the product datasheet and the Wiki and have not found a block diagram nor pinout for the product.

[Ainsfei]

The user manual will be released this week, including block diagram and IO connector.

[Ainsfei]

Hi, please check the user manul https://files.seeedstudio.com/wiki/reTerminalDM/reTerminal-DM-User-Manual.pdf

[MartinRaSt]

Hi,
How can I add SSD to this device. Datasheet remarks it is optional 2280B but how can I attach it?
Thank You

[Ainsfei]

The user manual will be released this week. SSD is optional, to use it need to istall an PCIe extension card.

[Ainsfei]

Hi, please check the user manual https://files.seeedstudio.com/wiki/reTerminalDM/reTerminal-DM-User-Manual.pdf

[tylerseitz]

Is there CAD (.stp) files available for the Reterminal DM?

[LJ-Hao]

Here is the reTerminal DM CAD files link

[themzlab]

Can the digital outputs be set to open-collector? if possible, would configure it to either sink current or be an open circuit. Otherwise, are there additional details available regarding the electrical specification of the digital outputs?

[bclswl0827]

Unfortunately, it cannot set to open-collector, since the output of EXT_OUT* is driven by an NPN transistor, while the collector is connected to DO_VDD via a fuse and phototransistor. The EXT_OUT* itself is an output with a voltage source, so it cannot be an open-collector configuration.

P.S. you can get the schematic PDF here.

[j-broome]

Need assistance with the LCD. When I do a reboot, the screen stays blank sometimes. Any help is much appreciated.

[bclswl0827]

Hi, as of Seeed-Studio/pi-gen-expand@8affb3b, the fix for this issue has been integrated into the system service. You may consider downloading the image from https://github.com/Seeed-Studio/pi-gen-expand/releases/latest and check if the problem still exists, or simply add https://github.com/Seeed-Studio/pi-gen-expand/blob/main/dev_config/reTerminal-DM/files/dsi_fix.sh to system service manually.

[j-broome]

Is there a typo in the dsi_fix.sh file?
It shows the same line twice. I have the service running but still see issue.

[j-broome]

Okay so I flashed with the Raspbian-reTerminal-DM-arm64.zip to the unit. Rebooted 10 times and never saw any issues. Ran sudo apt update and sudo apt upgrade -y, then rebooted and screen is blank.

[bclswl0827]

Reproduced.

After restarting, sometimes the screen goes blank, however the /sys/devices/platform/soc/fe700000.dsi/fe700000.dsi.0/dsi_state still returns ok.

When the screen goes blank, we can try to enable the screen by reloading the driver with the following commands

$ sudo rmmod ili9881d
$ sudo modprobe ili9881d

And now we've been able to control the screen, e.g.

$ sudo su
$ cat /dev/urandom > /dev/fb0

And according to the kernel message, now we can conclude that the problem lies in the Linux DRM framework.

It may be that after the DRM-related package(s) was updated, the bug of the function ili9881d_get_modes in the screen driver was triggered.

I have transferred this to the R&D staff - the next work involves modification on ili9881d driver.

[paulflake]

Hello,
I tried to connect the reTerminal DM to a barcode scanner which emulates a RS232 interface via USB Type-A. Unfortunately, the scanner is not recognized as a /dev/tty device (/dev/ttyACM0) on the reTerminal DM. If I use a normal Raspberry Pi board, the device is able to find the scanner as /dev/ttyACM0. I also tried to activate the serial interface within the raspi-config without success.

Is it possible to solve the problem without using the IO-pins?
Any help would be appreciated.

[themzlab]

use the command dmesg to see what has happened when you plug in and then unplug the scanner. You can also use sudo dmesg --clear before you do this and it will be easier to see the response when plugging in.

[XD-QIN]

After updating to bookworm and installing the driver, the display won't go to sleep like bullseye. Anyway to resolve this issue?

[nfs0619]

Hello, thank you for your feedback. I recommend reaching out to our technical support team at [email protected] and sharing relevant information such as operation logs. They will be able to provide you with more detailed and timely guidance.