ARDUINO MKR 485 SHIELD
MKR-footprint shield that adds RS-485 serial communication to any Arduino MKR board, enabling connection to industrial PLCs, drives, HMIs, and legacy machinery. Half- and full-duplex modes selectable via on-board switches.
Pinout
- A4Arduino MKR header A4
RS-485 receiver enable (RE)
Type · AnalogVoltage · 3.3V logic - A5Arduino MKR header A5
RS-485 driver enable (DE)
Type · AnalogVoltage · 3.3V logic - 13RXArduino MKR header pin 13
Reserved UART receive connection used by the shield
Type · UARTVoltage · 3.3V logic - 14TXArduino MKR header pin 14
Reserved UART transmit connection used by the shield
Type · UARTVoltage · 3.3V logic
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| A4 | Arduino MKR header A4 | Analog | RS-485 receiver enable (RE) | 3.3V logic |
| A5 | Arduino MKR header A5 | Analog | RS-485 driver enable (DE) | 3.3V logic |
| 13RX | Arduino MKR header pin 13 | UART | Reserved UART receive connection used by the shield | 3.3V logic |
| 14TX | Arduino MKR header pin 14 | UART | Reserved UART transmit connection used by the shield | 3.3V logic |
Pin details
4 connections- A4Arduino MKR header A4
RS-485 receiver enable (RE)
AnalogVoltage · 3.3V logic - A5Arduino MKR header A5
RS-485 driver enable (DE)
AnalogVoltage · 3.3V logic - 13RXArduino MKR header pin 13
Reserved UART receive connection used by the shield
UARTVoltage · 3.3V logic - 14TXArduino MKR header pin 14
Reserved UART transmit connection used by the shield
UARTVoltage · 3.3V logic
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