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DFRobot Dual-channel RS485 Expansion Hat for Raspberry Pi 4B

Name: DFRobot Dual-channel RS485 Expansion Hat for Raspberry Pi 4B
Brand: DFRobot
SKU: 1551166
Price: 3006 INR
Availability: InStock

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AI Summary

Multi-Brand Raspberry Pi Add on Boards (HATs) for everyday users

The DFRobot Dual-channel RS485 Expansion Hat for Raspberry Pi 4B by DFRobot is a mid-range multi-brand raspberry pi add on boards (hats) designed for everyday users. It features Item Type: HAT and Compatibility: Pi 4B.

₹3,007

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Quantity

Total: ₹3,007

Buying tip: A quality investment for dependable performance and premium build quality.

Estimated delivery: 16 Aug – 30 Aug

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Quick Specs

Item Type: HAT

Compatibility: Pi 4B

HAT Type: Expansion HAT

Operating Voltage (VDC): 3.3V

RS485 transceiver: TP75176E

Serial Chip: CH432T

Ideal For

Everyday convenience

SKU: robu-1551166Category: Multi-Brand Raspberry Pi Add on Boards (HATs)

About This Product

The DFRobot Dual-channel RS485 Expansion Hat for Raspberry Pi 4B by DFRobot is a mid-range multi-brand raspberry pi add on boards (hats) designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

Item Type: HAT
Compatibility: Pi 4B
HAT Type: Expansion HAT
Operating Voltage (VDC): 3.3V — works with standard household power
RS485 transceiver: TP75176E
Serial Chip: CH432T
Interface: 2, RS485 Interface — compatible with modern devices
power indicator: red

Why Buy from Pricio?

Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

RS485 is a common serial communication standard with features such as good noise rejection, long transmission distance, and multi-drop capability. It transmits data using a differential transmission method, which allows it to suppress common-mode interference. RS485 requires a pair of twisted-pair cables and two terminal resistors to eliminate signal reflection during long-distance communication. This dual-channel RS485 expansion HAT designed for the Raspberry Pi adopts an isolated transceiver to achieve isolation for RS485, which increases the reliability and anti-interference of data transmission in each channel. And it features embedded protection circuits such as a lightning and surge protector, a TVS diode, and power supply isolation to protect the Raspberry Pi development board effectively. Besides, the order includes a screw accessory kit that allows users to tightly fix this board onto a Raspberry Pi controller.

Applications:

Agricultural Internet of Things
Warehouse Internet of Things
Indoor and Outdoor Environmental Monitoring
Lighting Control
Security Access Control System

Features:

Dual Channel RS485
Electrical & signal isolation
Lightning & surge protection
Transient voltage suppressor
RX/TX data transmitting/receiving indicator

Package Includes:

1 x RS485 Expansion HAT for Raspberry Pi

4 x Copper Column & Screw

Setup Guide

Identify the pins

Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.

Wire to your microcontroller

Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.

Install libraries

In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.

Upload example sketch

Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.

Calibrate if needed

Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.