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    Pi 4B - 4x UART Box - RS232 x2 / RS485 x2 - 4K Splitter
  • Pi 4B - 4x UART Box - RS232 x2 / RS485 x2 - 4K Splitter
  • Pi 4B - 4x UART Box - RS232 x2 / RS485 x2 - 4K Splitter
  • Pi 4B - 4x UART Box - RS232 x2 / RS485 x2 - 4K Splitter

This 4K UART media box can control RS232 x2/RS485 x2 devices. There is a built-in 4K splitter for you to connect the standard HDMI cable between a TV and this media box. The speed of the RS232 x2/RS485 x2 can get up to 9600 bps for each port. 


Features: 

  • 2x 4K HDMI splitters for 1 to 2 with HDMI signal input from the Pi 4B's HDMI 0/1
    • 4x standard HDMI connectors that can connect up to 4 monitors (Pi 4B HDMI 0/1 that connect to two sets of 1 to 2 4K HDMI splitters)
  • Both the Pi 4B audio output and USB-C power input are on the front panel side
  • 1-Wire temperature sensor
  • 8x GPIO-controlled LEDs
  • One GPIO 5V Mini Fan control pin with ON/OFF control
    • 2.0mm and 2.54mm pitch
  • A real-time clock (RTC) function with a CR1220 battery socket
  • 4x UART board power selection jumper that can select between Pi 4B or Micro USB
  • 5V Mini Fan power selection jumper that can select between Pi 4B or Micro USB
  • 24C32 HAT EEPROM (i2c-0) provided for future software updates
  • Programmable 24C32 EEPROM (i2c-1)
  • A 20x2 40 pin cable that connects the 4x UART board to the Pi 4B 
  • The Pi Model 4B board can still use Bluetooth & Wi-Fi
  • RS485 uses driver software to control the auto RTS
  • Can choose between Black/Space Gray for the metal case

Output:

  • RS232 x2 and RS485 x2 uses RJ45 output
  • Each port's baud rate can get up to 9600 bps

Performance:

  • Power regulator converting 5V from the Pi 4B to provide an individual 3.3V power for the 4x UART Board

Demo Software:

  • A micro switch on the board that can be programmed for controlling 'Shut Down', 'Reboot' and much more

Technical specifications:

  • PCB: 195mm x 85mm
  • Metal Box: 200mm x 125mm x 55mm
  • Fan screw holes: 80mm x 80mm and 40mm x 40mm


Screen display for the demo software system:


  1. i2cdetect screen where you will see the location of 4c, 4d and 68 displayed as "UU"
  2. dev.sh display ttyPiCOM0 ~ ttyPiCOM3
  3. 4K screen resolution setting (3840 x 2160)
  4. "receive" Python program uses COM1, COM3
  5. "send" Python program uses COM 2, COM 4
  6. DC Fan C demo program
  7. DC Fan Python demo program
  8. DC Fan system status terminal screen



RS232 with RJ45 Pin 1 to Pin 8 output:

CTS, RTS, DCD, GND, DTR, TXD, RXD, DSR

RS485 with RJ45 Pin 1  to Pin 8 output

XXX  XXX   D+  GND   XXX  XXX   D-   XXX

  1       2       3       4        5       6       7      8

Demo Software Pack (*available upon purchase)

User Manual (*available upon purchase)

    Package Content:

    • 1x Pi 4B 4K-Splitter-RS232x2-RS485x2 4K-UART Media Box 
    • 1x Pi 4B/4GB with 16GB Micro SD card (includes driver & demo software)
    • 1x DC fan (80mm x 80mm)
    • 1x User Manual 

    Pi 4B - 4x UART Box - RS232 x2 / RS485 x2 - 4K Splitter

    • Brand: Pridopia
    • Product Code: Pi4-4xUART-232-485-4k-splitter-box
    • Availability: 180 days
    • Weight: 1.3 kg
      Dimensions (LxWxH): 200 mm x 125 mm x 55 mm
    • Ask for Price