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Which PLATYPUS W55RP20 Module Converts 3.3 V UART to Ethernet Without Custom Firmware?

PP-Ethernet-UART-HAT is a 45 x 30 mm PLATYPUS module that converts 3.3 V UART to Ethernet on a WIZnet W55RP20 and ships with W55RP20-S2E firmware preloaded.

Benjamin

Published August 27, 2026 · © Apache License 2.0 (Apache-2.0)

Original author: PLATYPUSOriginal source (new tab)

Which PLATYPUS W55RP20 Module Converts 3.3 V UART to Ethernet Without Custom Firmware?

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Hardware components

Project description

📌 PP-Ethernet-UART-HAT, a 45 x 30 mm Module That Puts a 3.3 V Serial Port on Ethernet PP-Ethernet-UART-HAT is the PLATYPUS module for a device that speaks only 3.3 V asynchronous serial and needs an IP address. PLATYPUS is an embedded module vendor in Hwaseong, Gyeonggi-do, Republic of Korea, whose store describes its business in four words: "Selling various embedded modules". Eleven modules sell directly from us-platypus.com under the tagline "Embedded Module Solution". The product page names the chip in one sentence: "It is equipped with WIZnet's powerful Ethernet conversion chip, the…

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