Updated: 24 Feb 2025

rs232 raspberry pis

Updated: 24 Feb 2025

#1

Best Choice
Waveshare Raspberry Pi Compute Module 4 IO Board with PoE Feature (Type B) Suitable for Variants of CM4

9.9

waveshare

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Suitable For PoE Powered Raspberry Pi Projects, Or Other Industrial Context

Standard CM4 Socket And Color-Coded Raspberry Pi 40PIN GPIO Header.

Onboard Connectors Including CSI/DSI/HDMI/USB/ETH/PCIe/RS232/RS485
#2

Value for Money
Waveshare Isolated RS485 RS232 Expansion HAT, Compatible with Raspberry Pi 5/4B/3B/Zero/Zero W/Zero 2W/Pico/Pico W/Pico WH, SPI Control, Onboard Protection Circuits

9.8

waveshare

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Main highlights

Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards. Adopts the combination scheme of SC16IS752, SP3485 and SP3232, converts SPI to one RS485 and one RS232

Onboard resettable fuse and protection diodes, ensure the stable output of RS485 current and voltage, prevent over-current and over-voltage, improve shock resistance

Onboard TVS (Transient Voltage Suppressor), can effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
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#3
RS232 Hat Expansion PCB Board for Rapsberry Pi 4/3/2/A+/B+,Compact GPIO TX/RX/GND to DB9M RS232 Serial Expansion Board

9.6

SZSEVSIOT

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Using ST3232 IC scheme, The Serial HAT features a Male DB9 RS232 port connected to the Pi's UART pins via a ST3232 IC. The ST3232 IC converts the Pi's UART port to RS232, which enables serial communication with any RS232 compatible serial device.The communication minimum guaranteed data rate is above 250 kbps .Support RS232. RS232: full-duplex communication.

Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards. Standard RS232 serial port , ideal to connect serial communication RS232 peripherals, industrial equipment (such as PLCs), serial console ports and special purpose equipment.

HAT compliant (No EEPROM), Male DB9 Socket (RS232/ RS-232), TX/RX/GND Solder Points. Expansion board size: 65mm*56.5mm, the standard Raspberry Pi HAT extension plate size.
#4
Ableconn PI232DB9M Compact GPIO TX/RX to DB9M RS232 Serial Expansion Board for Raspberry Pi

9.3

Ableconn

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Level shifter serial transmit (TX) and receive (RX) TTL level from the Pi to RS232 standard communication signals up to +- 25V. Includes a PCBA and Pin Header cable for connecting with Pi GPIO.

Ideal to connect serial communication RS232 peripherals, industrial equipment (such as PLCs), serial console ports and special purpose equipment

Connect Raspberry Pi TX / RX on GPIO header to a DB9M RS232 Serial port
#5
PI-232 | RS232 HAT for Rapsberry Pi A+/B+/2/3/4, RS232 Hat Expansion PCB Board, Compact GPIO TX/RX

9.2

WISDPI

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Serial Interfact HAT for the Raspberry Pi A+/B+/2/3/4

Male DB9 Socket (RS232 / RS-232)

HAT Compliant (No EEPROM)
#6
2-Channel Isolated RS232 Expansion HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W, SC16IS752+SP3232 Dual Chip Convert SPI to RS232 Data Rate up to 921600bps Embed Multi Protection Circuits

9.0

waveshare

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Main highlights

This is a 2-channel isolated RS232 expansion HAT designed for Raspberry Pi, adopts the SC16IS752+SP3232 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 RS232 via SPI interface. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for fields like industrial automation.

Features 3:Onboard LEDs for indicating the power and transceiver status.Breakout SPI control pins, for connecting with host control boards like Arduino

Features 1:Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards. Features 2:Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic.
#7
Isolated RS485 RS232 Expansion HAT Board for Raspberry Pi 4B/3B+/3B/2B/Zero/Zero 2 W/Zero 2 WH,Adopt SC16IS752 UART Expansion Chip,SPI to RS485 and RS232 Up to 921600bps Data Rate

8.8

waveshare

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Main highlights

Using SC16IS752 and SP3485, SP3232 multi-chip combination scheme, can realize SPI to RS485, RS232, the communication rate is up to 921600bps. Support RS485 and RS232. RS232: full-duplex communication, SP3232 transceiver. RS485: semi/full-automatic communication, SP3485 transceiver.

Overcurrent/Overvoltage proof, High Stability. Onboard TVS (transient voltage suppression tube), which can effectively suppress the surge voltage and transient peak voltage in the circuit, and protect against lightning and static electricity. Onboard power supply and serial port transceiver indicators, easy to check the module power supply and communication status.

Isolated RS485 RS232 Expansion HAT for Raspberry Pi (4B/3B+/3B/2B/Zero/Zero 2 W/Zero 2 WH). Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards.
#8
ZDE ZC501 Aluminum Case for Raspberry Pi 5 2GB/4GB/8GB/16GB Support PCIe to M.2 NVMe PoE HAT WiFi7 RS485 RS232 PCIe Peripheral Board ZP511/ZP517A/ZP581/ZP590A/ZP592 and Raspberry Pi 5 Active Cooler

8.7

ZDE

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Main highlights

High-quality Material: Made of lightweight and durable aluminum material, it can offer excellent protection and heat dissipation, protect the Raspberry Pi 5 board from damage, dust and scratches.

Compatibility: The enclosure is specifically designed for the latest Raspberry Pi 5 2GB/4GB/8GB/16GB board. It supports installation of various PCIe to M.2 NVMe SSD expansion boards, PoE HAT shields, WiFi7 adapter boards, and PCIe to RS485 RS232 HAT expansion boards. Supports ZP511/ZP512/ZP513/ZP515/ZP516/ZP517A/ZP580/ZP581/ZP582/ZP590A/ZP590B/ZP592 PCIe Peripheral Board.

Active Cooler Supported: Support installation of official Raspberry Pi 5 active cooler and other third-party cooling fans for heatsink. For aluminum case with cooling fan, please refer to ZP537.
#9
waveshare 2-Channel Isolated RS232 Expansion HAT for Raspberry Pi Model 4 B/3B+/3B/2B/B+/A+/Zero/Zero W Adopts SC16IS752+SP3232 Combination, Converts SPI to RS232, Data Rate up to 921600bps

8.6

waveshare

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Main highlights

Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic

Adopts SC16IS752+SP3232 dual chip combination, converts SPI to RS232, data rate up to 921600bps

2-CH RS232 HAT with standard Raspberry Pi 40PIN GPIO extension header, compatible with Raspberry Pi Model 4 B/3 B+/3 B/2 B/B+/A+/Zero/Zero W.
#10
Geekstory BE-220 GPS Module with Flash Navigation TTL Level 38400bps for Arduino Raspberry Pi Aircraft Pixhawk APM Flight Controller

8.5

Geekstory

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This BE-220 GPS Module using the latest 10th generation chip When you use it for Raspberry Pi, there is no driver needed. Here is connection with RPi, red to 3.3v, black to gnd, green to txd, white to rxd

The TX LED flash means gps module output normally. The PPS LED flash means gps module locate your place

Data Level : TTL or RS-232, Default TTL level. To make it be RS232 output, you need to use one TTL to RS232 converter cable

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rs232 raspberry pis

Waveshare Raspberry Pi Compute Module 4 IO Board with PoE Feature (Type B) Suitable for Variants of CM4

9.9

Main highlights

Waveshare Isolated RS485 RS232 Expansion HAT, Compatible with Raspberry Pi 5/4B/3B/Zero/Zero W/Zero 2W/Pico/Pico W/Pico WH, SPI Control, Onboard Protection Circuits

9.8

Main highlights

RS232 Hat Expansion PCB Board for Rapsberry Pi 4/3/2/A+/B+,Compact GPIO TX/RX/GND to DB9M RS232 Serial Expansion Board

9.6

Main highlights

Ableconn PI232DB9M Compact GPIO TX/RX to DB9M RS232 Serial Expansion Board for Raspberry Pi

9.3

Main highlights

PI-232 | RS232 HAT for Rapsberry Pi A+/B+/2/3/4, RS232 Hat Expansion PCB Board, Compact GPIO TX/RX

9.2

Main highlights

2-Channel Isolated RS232 Expansion HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W, SC16IS752+SP3232 Dual Chip Convert SPI to RS232 Data Rate up to 921600bps Embed Multi Protection Circuits

9.0

Main highlights

Isolated RS485 RS232 Expansion HAT Board for Raspberry Pi 4B/3B+/3B/2B/Zero/Zero 2 W/Zero 2 WH,Adopt SC16IS752 UART Expansion Chip,SPI to RS485 and RS232 Up to 921600bps Data Rate

8.8

Main highlights

ZDE ZC501 Aluminum Case for Raspberry Pi 5 2GB/4GB/8GB/16GB Support PCIe to M.2 NVMe PoE HAT WiFi7 RS485 RS232 PCIe Peripheral Board ZP511/ZP517A/ZP581/ZP590A/ZP592 and Raspberry Pi 5 Active Cooler

8.7

Main highlights

waveshare 2-Channel Isolated RS232 Expansion HAT for Raspberry Pi Model 4 B/3B+/3B/2B/B+/A+/Zero/Zero W Adopts SC16IS752+SP3232 Combination, Converts SPI to RS232, Data Rate up to 921600bps

8.6

Main highlights

Geekstory BE-220 GPS Module with Flash Navigation TTL Level 38400bps for Arduino Raspberry Pi Aircraft Pixhawk APM Flight Controller

8.5

Main highlights

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