Was planning on trying my hand at Nodered on a Rpi with the Rpi also serving as the MQTT broker. Reasons: just want to learn something new, want to “future proof” (and this is purposely in air quotes) support for my Tasmotized devices that are used in Hubitat automations (currently using T4HE but don’t know how long that will keep working as I update the Hubitat OS) and I want to be able to have future flexibility for adding in devices that support MQTT but are not integrated with Hubitat.
Question: for those of you that have done this, what type of Rpi are you using (how much RAM, sd card size, and Rpi model is needed to comfortably run Nodered as well as serving as a MQTT broker)?. Also, do you find that a cooling fan is desired as this will run 24/7 or is CPU usage low enough in this application that convection cooling with heatsinks are all that are necessary? TIA for any help!