Dual ETH Quad RS485 Base Board (B) - Lead expander for Raspberry Pi Compute Module 4 - Waveshare 2166

Index: WSR-21618 EAN: 5055652923011
Dual ETH Quad RS485 Base Board (B) is a board manufactured by Waveshare. It acts as a base board, a terminal expander designed to extend the capabilities of Raspberry Pi CM4 modules. It is equipped with special connectors for connecting the CM4 module and the outputs of the basic interfaces, including 2x USB 2.0 , 2x RJ45 Ethernet , HDMI , 2x CSI and 4x RS485 isolated interfaces.
Dual ETH Quad RS485 Base Board (B) - Lead expander for Raspberry Pi Compute Module 4 - Waveshare...
€55.50
€45.12 tax excl.
Delivery 10 pcs scheduled for 2024-11-29
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Manufacturer: Waveshare
Compatibility: Raspberry Pi

Product description: Dual ETH Quad RS485 Base Board (B) - pins expander for Raspberry Pi Compute Module 4 - Waveshare 21666

Dual ETH Quad RS485 Base Board (B) is a board manufactured by Waveshare . It acts as a base board, a terminal expander designed to extend the capabilities of Raspberry Pi CM4 modules. It is equipped with special connectors for connecting the CM4 module and the outputs of the basic interfaces, including 2x USB 2.0 , 2x RJ45 Ethernet , HDMI , 2x CSI and 4x RS485 isolated interfaces.

Dual ETH Quad RS485 Base Board (B) - pins expander for Raspberry Pi Compute Module 4.

Dual ETH Quad RS485 Base Board (B) - pins expander for Raspberry Pi Compute Module 4.

Dual ETH Quad RS485 Base Board (B).

Dual ETH Quad RS485 Base Board (B).

Technical Specifications

  • Compatible with Raspberry Pi Compute Module 4
  • Equipped with Gigabit Ethernet RJ45 connector, 100 Mb / s Ethernet RJ45 connector
  • Equipped with 4x isolated RS485
  • USB interface: 2x USB type A
  • Camera connector: 2x MIPI CSI-2 port (15-pin FPC 1.0mm connector)
  • Video connector: 1x HDMI port, supports 4K 30fps output
  • Real time clock (RTC) with battery backup
  • MicroSD card slot for RPI CM4 Lite modules
  • 5V PWM fan controller with feedback
  • LED indicators: 1x power indicator, 1x CM4 status indicator, 2x user LED indicator, 8x RS485 communication indicator
  • Power supply: 7V to 36V
  • Dimensions: 93.6 x 108.8 mm

The arrangement of elements on the board

  1. CM4 socket for all Compute Module 4
  2. IO-VREF
  3. RTC-12C: 12C bus selection for RTC
  4. RTC INT: Select the RTC interrupt pin
  5. SYSTEM: Configure system functions
    WP-DIS: Prevents EEPROM from being overwritten
    BT-DIS: Disables the Bluetooth function, ONLY for CM4 with antenna variant
    WIFI-DIS: Disables the WiFi function, ONLY for CM4 with antenna variant
  6. Boot switch
    ON: CM4 will boot from USB Type-C interface
    OFF: CM4 will boot from eMMC or microSD card
  7. USB Type-C connector
    When the BOOT switch is in the "ON" position, USB can be used as a USB programming or DC power port
    When the BOOT switch is in the "OFF" position, the USB port can only be used as a DC power port
  8. HDMI port0
  9. 2x USB port
  10. Gigabit RJ45 Ethernet connector
  11. 100 Mb / s Ethernet connector
  12. CAM0 and CAM1: 2x MIPI CSI camera ports
  13. Buzzer
  14. Fan connectors
  15. RTC battery socket
  16. RS485 TX / RX indicator
    TXn: TX indicator for channel n
    RXn: RX indicator for channel n
  17. User LED
    USER0: GPIO20 control
    USER1: GPIO26 control
  18. PWR power indicator
  19. Raspberry Pi working status indicator
  20. DC jack (7V to 36V DC)
  21. Screw connection for power supply (7V to 36V DC)
  22. RS485 terminal : 4x RS485 insulated terminal with 5.08 mm pitch
  23. Balancing resistor selection jumper
  24. RS485 operation mode selection
    Full-auto: automatic mode, easy to program operation, with low load capacity
    Semi-auto: semi-automatic mode which requires TX / RX manual switching, with high reliability and heavy load capacity
  25. ATSHA204 encryption chip, providing multiple encryption to ensure data security and reliability
  26. MicroSD card slot
Dual ETH Quad RS485 Base Board (B).

Dual ETH Quad RS485 Base Board (B) - pins expander for Raspberry Pi Compute Module 4 - Waveshare 21666.

Package width 15.8 cm
Package height 10.7 cm
Package depth 4.5 cm
Package weight 0.156 kg

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