SCH and PCB are open source (KiCAD 9), at https://github.com/vonger/multiscr

New firmware version v0.24 now support WCID(Windows Compatible ID), so the screen is no longer require to install WinUSB driver by zadig anymore. For Win10 or Win11, upgrade to the latest firmware, new PC can directly work with the screen, detail list:

• support WCID.
• support 4inch square screen.
• support 7.85inch long screen.
• update default logo position.
• optimize extend feature.
• add LVGL demo firmware.

Also MPro Linux DRM driver support kernel version 6.12, please download at https://github.com/vonger/mpro_drm

Lastest firmware please download at https://vocore.io/misc/v2scrctl.zip

A stable multiscreen solution is very important for many situations.

MPro driver boards are all using USB2.0 for best compatible, but for more than one screen, USB2.0 HUB is not enough for data transfer and power supply.

This solution is using USB3.0 HUB, its max speed is 5000Mbps, so it should be easy to connect to more than 8pcs screens.

USB3.0 HUB max output current is at least 10W, for our usage, screen only use approx 2W for each, so 4 screen at most 8W.

USBHub chip we can choose CH634F which cost is very low and we have tested it stable enough.

In June, we will make an open source demo board with at least three screens and also some WS2812B LEDs, hopefully this demo will help a lot for the production develop.

https://youtube.com/shorts/cA5IoOLQszE

For fast test extend/LVGL, please try https://vocore.io/misc/v2scrctl.zip, in firmware folder/MPRO/LVGL, use v2scrctl upgrade your screen to the firmware and it can work directly.

4inch Squre Screen

7.85inch Long Screen

The VoCore2 Ultimate has a sound card capable of recording and playing audio, so creating a small device for use with recent open-source AI tools could be a fun project.

• Sound Play The VoCore2 Ultimate uses the ES8388 sound card, which allows it to directly connect to an external 3.5mm standard speaker.
• Sound Record The ES8388 also supports audio recording functionality. On the VoCore2 Ultimate, I have already routed a microphone interface to a 3.5mm jack. For higher-quality recordings, you can instead use a USB microphone to achieve better results.
• AI Server This component cannot run directly on the VoCore due to high memory requirements—even for smaller models—but we can leverage open-source AI APIs like DeepSeek. I will test using the Qwen32B
• model, which works well on my laptop.

The idea works like this: First, record audio input and send it to a server to convert the sound into text. The text is then forwarded to an AI server for processing, where we wait for its response. Once the reply is received, the text is converted back into an audio file (e.g., WAV format), which is transmitted via Wi-Fi or Ethernet to the VoCore2 device. Finally, the audio is played through a connected speaker.

There’s no difficult part—just a few lines of code should be able to accomplish it. 😊 Maybe I can directly use FFmpeg on the VoCore2, so I won’t need to do most of the coding myself. Additionally, the AI itself will help with coding. Hopefully, I’ll finish this project by the end of this week!

After upgrading to v0.23, we are proud to announce an important new feature that enables us to extend MPRO screens for more uses. After many days of rigorous testing, we have now released this feature.

MPRO is based on the ARM core and has approximately 10MB of memory, which is sufficient for most embedded applications. We can easily run LVGL on it. With LVGL (or by directly using MPRO’s extended API), we gain access to several new features:

• Bluetooth dashboard(use bluetooth to UART adaptor)
• Fully customized start up logo, with animate supported.
• Embed setting page in device, can use USB(HID) or UART commuicate with PC.
• Picture-in-Picture, show another small dashboard into exists one.

Source code public at https://github.com/vonger/mpro-extend

You can directly upgrade your screen with the firmware in bin folder for quick test.

The main upgrade in the new version v0.23 is LZ4 compression. With this compression and partial drawing, we can greatly increase the FPS, making it stable at 60Hz or even higher for high-resolution screens like 10-inch (1024×600). With VoCore and USBIP (VirtualHere), it is also possible to make the screen wireless via WiFi.

New firmware, upgrade tool and sample code, download at https://vocore.io/misc/v2scrctl.zip

PS: end of this month we will make a demo board with 3.4 inch round screen and wireless function.

🙁 Very bad, vocore.io is offline. I have no idea what is happening; it just won’t turn on (maybe physical damage). Over the past ten years, the server has been offline many times. Sometimes heavy snow crashes the power supply, sometimes floods get into the server room, and sometimes there is a shortage of power supply.

Double hot backup and automatic switching are very important. After the server recovers, I must find a good way to make it more stable. I cannot rely solely on the server provider.

For now, I need to spend several hours recovering the site backup to another server first.

PS: for new order please directly email to sales@vocore.io, our sales will help you handle it directly.

This change log is copied from https://vocore.io/misc/v2scrctl.zip, README.txt.

From v0.16 to v0.20, the main upgrades include:

• Increased FPS by approximately 30% for all types of screens.
• Support for JPG compressed frames.
• Support for 10-inch screens (1024×600 resolution).
• Reduced 70% MPRO startup time.
• Support for using as the main or extended screen for Windows/Linux (Raspberry Pi/Ubuntu, mpro_drm driver).

2024.09.02

• fix v2scrctl touch trace for 6.8inch screens.

2024.08.19

• support 10inch screen, display/touch.

2024.08.08

• add fwcust.exe, it use old version customized logo firmware to generate latest version customized logo firmware.

2024.08.02

• firmware version upgrade to v0.20
• boot up speed reduce 1.5s.
• speed up v2scrctl scan for screen.

2024.07.30

• firmware version upgrade to v0.19
• firmware increase 28% fps for full draw.
• fix v2scrctl can not find correct firmware.

2024.07.20

• fix touch screen miss hover signal sometimes.
• add nologo firmware.
• fix v2scrctl show wrong touch trace for some screens.

2024.07.17

• add notify at v2scrctl monitor mode.
• add extmon.exe, this is for specified screen for monitor mode.
• add extmon source code.
• move source code to source folder.

2024.07.10

• firmware support baseline jpeg compress. convert: ffmpeg -i 800x480.bmp -v:q 3 -pix_fmt yuvj420p out.jpg
• fix partily draw not align data cannot show.

2024.06.04

• update v2scrctl, automatically choose firmware at Upgrade.

2024.06.02

• tutorial/win10.mkv is for windows10 indirect display driver install.
• add Windows 11 indirect display driver tutorial and pictures to driver/mprodrv/tutorial.

2024.05.25

• add tutorial for install WinUSB/Extend screen driver(tutorial.mkv).
• add Windows extend screen driver.

2024.05.18

• add flip/mirror for most V7B VoCore screens and all MPRO VoCore screens.
• upgrade firmware version to v0.17.