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ioNIC AWS MQTTS Client Arduino Example

The W55RP20-S2E operates as an MQTTS client, connects securely to AWS IoT Core, and publishes and subscribes to configured topics.

Grace_Koo

Published March 18, 2026

112 UCC

25 WCC

11 VAR

ioNIC AWS MQTTS Client Arduino Example

Components

Hardware components
Raspberry Pi Pico

Raspberry Pi - Raspberry Pi Pico

x 1

W55RP20-EVB-Pico

WIZnet - W55RP20-EVB-Pico

x 1

Software Apps and online services
Arduino IDE

Arduino - Arduino IDE

x 1

Project description

How to AWS MQTTS Client Example This example explains how the Raspberry Pi Pico transmits AT commands to the W55RP20-S2E board via the UART or SPI interface to configure it in MQTTS client mode. After the MQTTS client configuration is completed, the W55RP20-S2E establishes a TLS-secured connection to AWS IoT Core. When a message is published to a subscribed topic in AWS IoT Core, the W55RP20-S2E receives the message and forwards it to the Raspberry Pi Pico via UART or SPI. The Raspberry Pi Pico processes the received message, generates a publish message, and sends it to the W55RP20-S2E…

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