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 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. Features 3:Onboard LEDs for indicating the power and transceiver status.Breakout SPI control pins, for connecting with host control boards like Arduino Adopts SC16IS752+SP3232 dual chip combination, converts SPI to RS232, data rate up to 921600bps UART expansion chip: SC16IS752. RS232 transceiver: SP3232. How-to-use document/User Manual ://bit.ly/3OOT9ch Overview
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

Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards

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

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

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

RS232 transceiver: SP3232

Communication interface: SPI

Data rate: 300 ~ 921600 bps

Operating voltage: 3.3V / 5V

Dimensions: 65mm × 56.5mm

Mounting hole size: 3.0mm

Package Content
1.2-CH RS232 HAT x1
2.2x20PIN female pinheader x1
3.RPi screws pack (2pcs) x1

Note: this HAT doesn't come with any serial cable, you may also want to pick up the following cables for easy use:
1)Serial Cable Dual Female Crossover: for connecting RS232 devices with male connector, OR for self transceiving test of the HAT's 2 channels RS232
2) Serial Cable Male to Female Straight Through: for connecting RS232 devices with female connector
Note: the Raspberry Pi and serial cables are NOT included.