MQTT - Scarey's Tech

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MQTT

A collection of 5 posts

Hot Tub Monitor

Hot Tub Monitor

When I got my hot tub last year and was looking into remote monitoring and control I could only find an old Hackaday post from 2015 but the old microcontroller was hard to source. I figured I'd rework it using tech from this decade so I could read the temperature,

Simple ESP32 OTA Code updates via MQTT

Simple ESP32 OTA Code updates via MQTT

This is a very basic system for remotely updating files on an ESP32 and optionally triggering a reboot. Lots of other projects do something similar and have more features but I wanted something lightweight that didn't depend on a web server. The device just needs to listen to an OTA

Awning Control

My deck gets a lot of sun so I figured an awning might help with the glare and keep it cool enough let me and the doggies walk around without getting 3rd degree burns. I ordered a highly rated one off Amazon, installed it, and quickly got to witness how

Temperature Controller

Temperature Controller

I used to brew at my neighbor's place and we'd ferment in his unfinished basement. We'd have trouble keeping the fermentation temperature up when it was cold out and we ended up putting a shop light underneath the fermenter to try warming things up. Obviously that wasn't a great solution

Ultimate Garage Door Control

Ultimate Garage Door Control

I've had an Insteon Garage Door Control and Status kit for over a decade and I have never trusted it. It consists of an Insteon controllable relay and a single reed switch that could tell you if the door was closed. It would occasionally stop opening after about a quarter

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