2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)
      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)
      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)
      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)
      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)

      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)

      WS-17221
      €22.79

      18.99 € tax excl.

      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)
      Quantity :
      OUT OF STOCK
      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)

      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi, SC16IS752+SP3485 Solution, with Multi Onboard Protection Circuits

      Overview

      This is a 2-channel isolated RS485 expansion HAT designed for Raspberry Pi, adopts the SC16IS752+SP3485 solution, with embedded protection circuits such as power supply isolation, ADI magnetical isolation, and TVS diode, etc.

      It is easy to control the 2-channel RS485 for auto transceiving via SPI interface. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for fields like industrial automation.

      Features

      • Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
      • Adopts SC16IS752+SP3485 dual chip combination, converts SPI to RS485, data rate up to 921600bps
      • Allows transceiving data manually or automatically, configured by DIP switch
      • Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
      • Onboard auto-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
      • Onboard LEDs for indicating the power and transceiver status
      • Breakout SPI control pins, for connecting with host control boards like Arduino
      • Comes with development resources and manual (examples in C and Python)

      Specifications

      • UART expansion chip: SC16IS752
      • RS485 transceiver: SP3485
      • Communication interface: SPI
      • Data rate: 300 ~ 921600 bps
      • Operating voltage: 3.3V / 5V
      • Dimensions: 65mm × 56.5mm
      • Mounting hole size: 3.0mm

      What's on Board

      2-CH RS485 HAT on board resource
      1. SC16IS752 UART expansion chip
      2. ADUM1412 digital isolator
      3. PC817 optocoupler
      4. SP3485 RS485 transceiver
      5. B0505LS power supply isolation module
      6. RT9193-33 power chip
      7. SMAJ12CA transient suppress diode array
      8. Auto-recovery fuse
      9. Status indicator
        PWR: power indicator
        RXD/TXD: UART transceiving indicator
      10. Raspberry Pi GPIO connector: for connecting Raspberry Pi
      11. RS485 terminal
      12. MCU control header: for connecting host control boards like Arduino
      13. 120Ω terminal resistor switch
      14. Interrupt pin switch
      15. Operating mode selection
        Half-auto: A=0, B=1
        Full-auto: A=1, B=0

      Example

      2-CH-RS485-HAT-5_800.jpg

      Pinouts

      PINRASPBERRY PI (BCM)DESCRIPTION
      VCC 5V 3.3V/5V power supply
      GND GND Ground
      SCK P21 (SPI1 SCLK) SPI clock input
      MOSI P20 (SPI1 MOSI) SPI data input
      MISO P19 (SPI1 MISO) SPI data output
      CS P18 (SPI1 CS) SPI chip select
      IRQ P24 Interrupt output
      EN1 P27 Channel 1 TX/RX enable: high for TX, low for RX
      EN2 P22 Channel 2 TX/RX enable: high for TX, low for RX

      Dimension

      2-CH-RS485-HAT-size.jpg

      Development Resources

      Wiki : www.waveshare.com/wiki/2-CH_RS485_HAT



      Package Content

      1. 2-CH RS485 HAT x1
      2. 2x20PIN female pinheader x1
      3. RPi screws pack (2pcs) x1
      2-CH-RS485-HAT-pack_800.jpg
      Waveshare Electronics
      WS-17221

      Specific References

      2-Channel Isolated RS485 Expansion HAT for Raspberry Pi (WS-17221)

      €22.79

      18.99 € tax excl.