VRLinuxBoard6.0

Hardware

• VR Linux Board: 6.x
• Processor: Variscite VAR-SOM-MX8M-PLUS, i.MX 8M Plus

Resources:

• Variscite: https://variwiki.com/index.php?title=VAR-SOM-MX8M-PLUS
• Schematics: M:\Altium\Altium Designer Summer 09\Projects\LINUX Board Rev 6.0
• Design materials: M:\rfid_appliance\VRReader\VRLinuxControllerBoard\GEN6

Builds:

VR Serial Number	Hostname	Wifi MAC Address	OS Version	Note
VRSN000062607	vr-d79cf4	fc:84:7a:d7:9c:f4	Android 14.0.0.002	-
VRSN000062608	vr-d79cf0	fc:84:7a:d7:9c:f0	Android 14.0.0.002	-
VRSN000062605	vr-d79cb8	fc:84:a7:56:8c:26	Android 14.0.0.001	TMO HDMI, Fridge demo
VRSN000062604	vr-d79ca6	fc:84:a7:56:20:f4	Android 14.0.0.001	TMO LVDS, test bezel by YC
VRSN000000000	vr-000000	00:00:00:00:00:00	-	-

Build Android Image

• Build computer: lab27-deb, /home/CRM.VENTURERESEARCH.COM/ychen/android-vr-14/android_build

cd /home/CRM.VENTURERESEARCH.COM/ychen/android-vr-14/android_build
bash build-android-vr.sh -b sd

Flash Android Image

Flash SD Card

cd /home/CRM.VENTURERESEARCH.COM/ychen/android-vr-14/android_build
bash build-android-vr.sh -f sd /dev/sdb

Where, replace /dev/sdb with the other mounting point you may have.

Flash eMMC

Follow the steps in the guide to flash eMMC: File:Flash_eMMC_Guide_20250425.pdf

Image History

The zipped image files are saved at the M drive: m/$$-CUSTOMERS/LifeTechnologies/Android/Images/lab27-deb.

The Linux Board 6.1 uses iMX8MP and Android 14:

tmo-lvds-release-sd-14-2025-04-23T12-10-02.tar.gz

• ThermoFisher Logo, LVDS screen - tmo-lvds-release-sd-14-2025-04-23T12-10-02.tar.gz (Latest Version, 14.0.0.002, adjust device tree for gpio outputs)
• ThermoFisher Logo, HDMI screen - tmo-hdmi-release-sd-14-2025-01-13T12-08-18.tar.gz (Initial Version, 14.0.0.001)
• ThermoFisher Logo, LVDS screen - tmo-lvds-release-sd-14-2025-01-13T11-53-21.tar.gz (Initial Version, 14.0.0.001)

Setup Android on Board

First Initialization Setup

The script "vr-firstrun.sh" is to process all initialization and settings on the board. You need run it when you prepare a brand-new board or update the Android system.

Upside Down Cake (Android 14)

su
busybox wget http://readonly:secret@svn.crm.ventureresearch.com/svn/linux/testing/vr-mx8-linuxboard/android_14/build/vr-firstrun.sh -O /sdcard/Download/vr-firstrun.sh
bash /sdcard/Download/vr-firstrun.sh

Follow up the instructions on screen to complete this initialization. The script searches the address of lan Ethernet and pick up its latest six letters to create the host name starting from “vr-“. It also re-flash the wifi address as what you remembered above.

The OpenVPN configuration file with keys is generated and saved at “/sdcard/venture.android.openvpn.conf”.

After the initialization script is completed. Reboot the board.

reboot

After reboot, you can check the hostname starting from "vr-"

hostname

Setup for Specific Projects

Before you run the [System] or [Prebox] test on the VR Hardware Manger:

Premier V2

You need run the commands to change setup for Premier V2.

su
busybox wget -O - http://readonly:secret@svn.crm.ventureresearch.com/svn/linux/testing/vr-mx8-linuxboard/android_14/build/premierv2-secondrun.sh | /system/bin/sh

SC Express V2

You need run the commands to change setup for SC Express2.

su
busybox wget -O - http://readonly:secret@svn.crm.ventureresearch.com/svn/linux/testing/vr-mx8-linuxboard/android_14/build/scexpress-secondrun.sh | /system/bin/sh

---

Continue Setup

OpenVPN

After the OpenVPN configuration file is generated, follow the steps in the guide to setup the VPN: File:OpenVPN_Guide_20250120.pdf

Then:

• Verify the tun0 is created or not by the command

busybox ifconfig

• Check connection to the OpenVPN server by Ping the OpenVPN server 172.19.0.1 or openvpn.ventureresearch.com

ping 172.19.0.1
ping openvpn.ventureresearch.com

---

Others

4K HDMI Monitor

If the board is supporting the 4K HDMI monitor, please run the commands below:

su
wm size 3840x2160
wm density 480

Set the HDMI display to be portrait mode:

su
settings put system accelerometer_rotation 0
settings put system user_rotation 3

VR CheckList

Check the app version:

dumpsys package com.ventureresearch.vrchecklist | grep version

Update the app:

pm uninstall com.ventureresearch.vrchecklist
busybox wget http://downloads.ventureresearch.com/Thermofisher/VRCheckList/Android/release/production/VRCheckList.apk -O /sdcard/Download/VRCheckList.apk
pm install -r -d /sdcard/Download/VRCheckList.apk

Camera

Capture an Image

Follow the steps below to capture an image, which is saved at the folder - /sdcard/Pictures:

• Step 1 - Load the camera app:

am start -a android.media.action.STILL_IMAGE_CAMERA

• Step 2 - Capture an image:

input keyevent KEYCODE_CAMERA

• Step 3 - Close the camera app:

am force-stop com.android.camera2

VR System Controller

The service of VR System Controller - vrsc is automatically started. If you want to manually start the service, run the commands below:

su
stop vrsc
bash start-vrsc.sh

The frontend website is accessible internally only at the address: 127.0.0.1:9999. If you want to access the website externally from other computers, need to edit the vrsc.toml by the commands:

stop vrsc
sed -i 's/^#listen_address/listen_address/g' /data/vr/vrsc.toml
start vrsc

Reset for internal access only:

stop vrsc
sed -i 's/^listen_address/#listen_address/g' /data/vr/vrsc.toml
start vrsc