Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)
      Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)
      Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)
      Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)
      Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)

      Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)

      WS-21666
      €65.07

      52.90 € tax excl.

      Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)

      Quantity :
      OUT OF STOCK

      Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)

      Dual ETH Quad RS485 Base Board (B) For Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485, USB2.0

      Dual ETH Quad RS485 Base Board For CM4

      Designed For Raspberry Pi Compute Module 4

       

      CM4-ETH-RS485-BASE-B-details-1.jpg
      Specifications
      CM4 SOCKET suitable for all variants of Compute Module 4
      NETWORKING Gigabit Ethernet RJ45 connector, 100M Ethernet RJ45 connector
      CONNECTOR Isolated RS485 × 4, Power screw terminal × 1
      USB USB 2.0 Type A × 2
      CAMERA MIPI CSI-2 port × 2 (15pin 1.0mm FPC connector)
      VIDEO HDMI port × 1, supports 4K 30fps output
      RTC Real-time clock with battery socket and ability to wake Compute Module 4
      STORAGE MicroSD card socket for Compute Module 4 Lite (without eMMC) variants
      FAN HEADER allows speed adjustment, 5V
      INDICATOR Power indicator × 1, CM4 status indicator × 1, 
      User LED × 2, RS485 communication indicator × 8
      POWER INPUT 7-36V
      DIMENSIONS 93.6 × 108.8mm
      Connecting With Compute Module 4

      Standard CM4 Socket And Suitable For All Variants Of Compute Module 4

      CM4-ETH-RS485-BASE-B-details-3.jpg
      More Rich Interfaces

      Various Interfaces Including: Dual ETH / RS485 / CSI / FAN / HDMI / Micro SD / USB

      CM4-ETH-RS485-BASE-B-details-5.jpg
      Application Examples

      Suitable For Raspberry Pi Applications Requiring Multi-Channel RS485 Communication Or Other Industrial Context

      CM4-ETH-RS485-BASE-B-details-7.jpg
      for reference only, CM4, display, and cameras are NOT included.
      What's On Board
      CM4-ETH-RS485-BASE-B-details-intro.jpg
      1. CM4 socket
        suitable for all variants of Compute Module 4
      2. IO-VREF
        Set the CM4 IO logic level as 3.3V (default) or 1.8V
      3. RTC-12C: 12C bus selection for RTC
        Can choose SDA0 & SCLO (default) or GPIO2 & GPIO3
      4. RTC INT: RTC interrupt pin select
        D16: Use GPIO16 to receive interrupt signal when RTC interruption (default)
        GL-EN: CM4 powerdown on RTC interruption
        PI-RUN: CM4 will reboot on RTC interruption
      5. SYSTEM: System function configuration
        WP-DIS: Prevent EEPROM from being overwritten
        BT-DIS: Disable Bluetooth function, for CM4 with antenna variant ONLY
        WIFI-DIS: Disable WiFi function, for CM4 with antenna variant ONLY
      6. Boot
        ON: CM4 will be booted from USB-C interface
        OFF: CM4 will be booted from eMMC or Micro SD card
      7. PWR & USB
        When the BOOT switch is "ON", can be used as the USB programming or DC power supply port
        When the BOOT switch is "OFF", only used as the DC power supply port
      8. HDMI0
        HDMI port, supports 4K 30fps output
      9. USB
        2x USB 2.0, for connecting sorts of USB devices
      10. ETHERNET0
        CM4 original Gigabit RJ45 ETH
      11. ETHERNET1
        USB extended 100M ETH
      12. CAM0 & CAM1
        2x MIPI CSI camera ports
      13. Buzzer
        GPIO22 control
       
      1. FAN
        4-pin FAN header, only supports 5V FAN, allows PWM speed adjustment (GPIO18 control, speed measurement is not supported)
      2. RTC battery socket
        Supports CR1220 button cell
      3. RS485 TX/RX indicator
        TXn: TX indicator for channel n
        RXn: RX indicator for channel n
      4. User LED
        USER0: GPIO20 control
        USER1: GPIO26 control
      5. PWR
        Raspberry Pi power indicator
      6. ACT
        Raspberry Pi working status indicator
      7. DC 7~36V
        DC power supply interface
      8. Power input terminal
        DC power supply terminal, supports 7~36V wide range power input
      9. RS485 terminal
        4 x Isolated RS485 terminal with a spacing of 5.08mm
      10. Jumper
        120R Balance Resistor Selection Jumper
      11. RS485 operating mode selection
        Full-auto: automatic mode, easy for program operation but the load capacity is weak
        Semi-auto: semi-automatic mode, which requires manual TX/RX switching, with high reliability and strong load capacity
      12. Encryption chip
        ATSHA204 encryption chip, providing multiple encryption to ensure data security and reliability
      13. Micro SD card slot
        for connecting a Micro SD card with pre-burnt image (Lite variant ONLY)
      Outline Dimensions
      CM4-ETH-RS485-BASE-B-details-size.jpg
      What's The Differences
      CM4 BASE BOARDINTERFACE COUNT AND SPECIFICATIONS
      POEGIGABIT
      ETH
      40PIN
      GPIO
      PCIEUSB①DSIHDMICSIRTCFAN
      HEADER
      POWER
      INPUT
      FEATURES

      MINI BASE A
        ×1 M.2 M 2.0×4 ×1 ×2 ×2   5V 5V mini size

      MINI BASE B
        ×1 M.2 M 2.0×4 ×1 ×2 ×2 5V 5V mini size

      BINOCULAR CAMERA
        ×1 M.2 M 2.0×4   ×2       5V dual 8MP
      cameras

      DUAL GIGABIT ETH
        ×2   3.0×3 ×1 ×2 ×2 5/12V 7-36V  

      IOT DUAL GIGABIT ETH
        ×2   3.0×2 ×1 ×2 ×2 5/12V 5V 5G/4G support

      IOT BASE
      ×1   Gen2×1 2.0×2 ×2 ×2 ×2 5/12V 7-36V 5G/4G support
      RS232
      RS485
      ADC

      POE BASE (B)
      ×1 Gen2×1 2.0×4 ×2 ×2 ×2 5/12V 5V RS232
      RS485

      POE BASE
      ×1   3.0×4 ×2 ×2 ×2 5/12V 7-36V  

      RASPBERRY PI OFFICIAL
      ×1 Gen2×1 2.0×4 ×2 ×2 ×2 12V 12V  

      WIRELESS BASE
        ×1   M.2 B /
      Mini-PCIe
      2.0×3   ×1 ×1 5/12V 5V or
      7-36V
      5G/4G support
      RS485
      CAN
      rail-mount

      7″ ALL-IN-ONE
        ×1   M.2 M 2.0×4 used ×1 used 5/12V
      used
      7-36V touch screen
      camera
      speaker
      NOTE ① USB 3.0 is equivalent to USB 3.2 Gen1
      ② There's PoE header only on the Raspberry Pi official IO board without PoE circuit, that means additional PoE module is required for the official IO board to enable PoE feature. 
      Unless otherwise specified, the PoE feature here stands for integrating 802.3af-compliant PoE circuit (5V/2.5A).
      Resources & Services
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      Waveshare Electronics
      WS-21666

      Specific References

      Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4, Gigabit Ethernet, 4CH Isolated RS485 (WS-21666)

      €65.07

      52.90 € tax excl.