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RS485 Pi

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€14.99 *

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Delivery time 7 Workdays

  • AB Electronics
  • EXP-R72-016
  • RS485PI
  • 0
  • UK
  • 85423190
  • 0.005
The RS485 Pi is a communication board supporting the RS-485 serial protocol. The RS-485 port... more

The RS485 Pi is a communication board supporting the RS-485 serial protocol.

The RS-485 port is connected to the UART port on the Raspberry Pi using a SN65HVD72 interface. The SN65HVD72 IC converts the 3.3V UART signals to RS-485 voltages allowing communication with RS-485 compatible devices over a DB9 serial cable or twisted pair cable. The RS-485 port can be accessed through the DB9 port or the solder points on the PCB.

The RS485 Pi contains protection against voltage spikes in the form of a TVS Diode and two 10-Ω, Pulse-Proof Thick-Film Resistors.

Please note that you can only use one RS485 Pi board on a Raspberry Pi. if stacking with other boards we recommend putting the RS485 Pi at the top of the stack due to the height of the DB9 connector.

Note: Before using the RS485 Pi you will need to solder both connectors onto the PCB.  We suggest soldering the 40 pin GPIO connector first and then the DB9 connector.

Features:

  • RS-485 Half Duplex Port.
  • Up to 250 kbps transfer rate.
  • Use the Raspberry Pi to control external RS-485 devices.
  • Stackable with other Raspberry Pi accessory boards.

Specifications:

  • Supply Voltage: 3.3V
  • Logic Voltage at GPIO Port: 3.3V
  • Differential Input Voltage at A & B: -12V to +12V
  • High-level input voltage: 2V
  • Low-level input voltage: 0.4V
  • Signalling Data Rate: 250 kbps
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