Waveshare 17221 2-CH RS485 HAT

Artnr.: WS1-017221
GTIN: 0614961955646
Hersteller: Waveshare

2-Kanal isolierter RS485 Erweiterungs-HAT für Raspberry Pi, SC16IS752+SP3485 Lösung, mit mehreren Onboard Schutzschaltungen

18,90 €

inkl. 19% MwSt.

(15,88 € exkl. MwSt.)

zzgl.

ab Lager lieferbar

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

SC16IS752 UART expansion chip
ADUM1412 digital isolator
PC817 optocoupler
SP3485 RS485 transceiver
B0505LS power supply isolation module
RT9193-33 power chip
SMAJ12CA transient suppress diode array
Auto-recovery fuse
Status indicator PWR: power indicator RXD/TXD: UART transceiving indicator
Raspberry Pi GPIO connector: for connecting Raspberry Pi
RS485 terminal
MCU control header: for connecting host control boards like Arduino
120O terminal resistor switch
Interrupt pin switch
Operating mode selection Half-auto: A=0, B=1 Full-auto: A=1, B=0

Example

Pinouts

PIN	Raspberry 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

Development Resources

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

Package Contents

2-CH RS485 HAT x1
2x20PIN female pinheader x1
RPi screws pack (2pcs) x1

Versandgewicht:	0,04 kg

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