How to Build RS-232 Ethernet Conversion with WIZnet W55RP20 on PP-Ethernet-RS232-HAT?

PP-Ethernet-RS232-HAT is a commercial Ethernet-to-RS-232 converter module built around WIZnet W55RP20, a SiP that integrates Raspberry Pi’s RP2040 microcontroll

gavinchang

Published June 05, 2026

109 UCC

25 WCC

55 VAR

4 Followers

Original author: platypusOriginal source (new tab)

Project description

How to Build RS-232 Ethernet Conversion with WIZnet W55RP20 on PP-Ethernet-RS232-HAT? Summary PP-Ethernet-RS232-HAT is a commercial Ethernet-to-RS-232 converter module built around WIZnet W55RP20, a SiP that integrates Raspberry Pi’s RP2040 microcontroller with WIZnet’s W5500 Ethernet controller. The module converts serial RS-232 data into TCP/IP network traffic and converts received TCP/IP data back into RS-232 data. W55RP20 provides the embedded control core plus W5500-based wired Ethernet, hardware TCP/IP offload, socket resources, and packet buffering needed for commercial serial-device…

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