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W55RP20-S2E MQTT client Example (MicroPython)

This example demonstrates MQTT client on W55RP20 S2E via UART/SPI using MicroPython on a Raspberry Pi Pico (Master)

Grace_Koo

Published February 25, 2026

112 UCC

25 WCC

11 VAR

W55RP20-S2E MQTT client Example (MicroPython)

Components

Hardware components
W55RP20-EVB-Pico

WIZnet - W55RP20-EVB-Pico

x 1

W55RP20

WIZnet - W55RP20

x 1

Software Apps and online services
MicroPython

micropython - MicroPython

x 1

Project description

How to MQTT Client Example (MicroPython) This program demonstrates how to configure the W55RP20-S2E board as an MQTT Client (OP=5) using a Raspberry Pi Pico (Host) via UART or SPI. It connects to an MQTT broker, subscribes to a specific topic, and publishes messages to the network. Step 1: Prepare software The following software is required to run and test the MicroPython example. Thonny : An integrated development environment for MicroPython. used to write, upload, and run code. MQTT Broker: A server to mediate messages (e.g., Mosquitto installed on your PC). Step 2: Prepare hardware 1…

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