micropython - Scarey's Tech

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micropython

A collection of 10 posts

Smart Mousetrap

Smart Mousetrap

I got tired of hearing critters running around in my walls. Ordered some traps and quickly got tired of going into the attic every day to check them. I ended up adding small reed switches and magnets to the traps and wiring them to an ESP32. Now I just wait

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

Mail's Here!

I can't see my mailbox from my house so I thought it might be nice to get a notification when it opens. Initially I had an ESP32 connecting over WiFi but it had poor signal strength and I wanted to try LoRa and it's working well. I added a solar

Ultrasonic Home Heating Oil Gauge

Ultrasonic Home Heating Oil Gauge

An ultrasonic sensor sends a sound pulse that bounces off the oil and returns to the sensor. The amount of time that it takes can be measured and based on the speed of sound you can figure out the distance. Neat. It's nothing as grand as the pic above, I'm

Laundry's Done!

Laundry's Done!

Well there's still folding and stuff left but getting notified when the washer/dryer cycle finished was one of my first projects and is a big hit with the wife. An accelerometer detects when motion has ceased and sends a notification. I'm using micropython with an ESP32, MQTT, Home Assistant,

Bass Reactive LEDs with Micropython and ESP32

Bass Reactive LEDs with Micropython and ESP32

This is my take on creating some cool lighting for my car. I thought it would be more interesting if the LEDs reacted only to the bass instead of simply the volume. After a bunch of googling I couldn't really find exactly what I wanted but I managed to piece

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