I need to send some 'commands' to a pi pico device thats running some custom micropython code over a wired connection from Node-RED running on a RasPi. Anyone got a good solution to this, I only need a few basic state switch comands so simplest would be to wire 3-4 GPIO lines across and just set on…

That thread seems to be assuming wifi. Does MQTT work over a serial port?

[image] jbudd: Does MQTT work over a serial port? No, MQTT relies on a network stack (and a broker) so way more overhead than would be needed for a local wired connection! Also the Pico doesn't have a network interface (its not a PicoW)

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Wired communication to Pi Pico

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E1cid 22 November 2024 15:23 2

This topic talks about mqtt with micro python, it may help How to receive MQTT data using Subscribe and callback

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Wired communication to Pi Pico

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