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Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

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Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#81
I have an ESP8266 with motor controller opening and closing my chicken coop door at sunup and sundown. Also has a button to manually open or close.

It also monitors the temperature with a DS18B sensor, and uploads it via REST to a receiver that logs it to a database.

And it emaila me when the door opens or closes.

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#82
I turned a light-up Pac Ghost into an indicator lamp for my Uptime Kumar instances.

https://github.com/psitem/uptime-kuma-pacman-ghost-light

I've been working on a replacement controller for the Omlet automatic chicken coop door. They've recently released their own connected controller but given the shortcomings of the original I'm not sure I trust it to be reliable enough to leave my feathered friends unsupervised for days at a time.

Next in the queue is replacing my ATHOM garage door controller with my own that will add a second reed switch to detect that the door is fully open.

And I'm mulling over ways I could monitor the feed level in my chicken feeders. And maybe close them off at night to keep other critters out. But it's tricky because I don't want to replace what I have with a design that might be easier to automate, as they've held up well against the rain and I'm lazy.

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#83
I reverse-engineered how my adjustable bed base works, then built (and sell) a hub for controlling it from Home Assistant. See https://blog.laplante.io/2019/01/11/reverse-engineering-the-... and https://www.tindie.com/products/cplaplante/temperbridge/

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#84

I’ve built a small scale ‘flat’ that is meant to act as a ‘living’ object that is a bed side companion for sick children that are lying in a hospital. The idea is that you give a certain floor to family or friends so that they can control the lights (and color). The child can see if parents, grandparents or friends are home or not (based on a schedule or manual action). It gives a sense of reassurance and closeness o…

This is a very sweet and beautiful thing.

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#85
Haven't done it yet but I'm making a booknook for my gf of the verandah in a particular Guatemalan hostel on the river where we stayed on our Central American holiday a few years ago. When a button is pressed it plays a looping mp3 of the jungle ambiance (ripped from a video I took on the actual holiday), together with a rippling light effect on the resin "river".

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#86
I've built a hardware monitoring screen for my main/gaming PC, that displays CPU/GPU usage and temperature, RAM/VRAM usage etc. It has been very useful for me to be able to see all those stats at a glance while in game, to see where my computer is bottlenecked. Oh and also it doubles as a desk clock. :)

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#87
I've built a bunch of things:

A snapcast client, which can play audio synchronized on multiple rooms

https://github.com/DavidVentura/esp-snapcast

An stratum-1 NTP _server_ (read: gets its time from GPS), and displays time with unreasonable precision (not necessarily accuracy!)

https://github.com/DavidVentura/esp-ntp

A few HUB75 signs which display public transport status (the public transport bits are not published anywhere yet)

https://github.com/DavidVentura/hub75-esp

An "on-air" sign that turns on/off if my wife or I join a meeting (based on camera/mic usage, for Linux and Mac)

https://github.com/DavidVentura/on-air

A purely decorative sign that looks like a pixelated fire

https://github.com/DavidVentura/matrix-fire

A kindle-controlled bedside lamp (just mqtt, but functionality is priceless - blogpost is unrelated but it's the only video I've got)

https://blog.davidv.dev/building-an-mqtt-client-for-the-kind...

An HDMI switcher (just a GPIO toggle) & a full-house blinds controller (just a relay hooked to the central, manual system)

https://blog.davidv.dev/extending-the-capabilities-of-dumb-d...

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#88
post #74

I've built tons of things. Most usefully, I built presence/motion/light/temperature sensors for my home, along with IR transmitter so I can control my TV/AC. They're about the size of two matchboxes, they cost about $10 each and they're amazing for my home automation: https://gitlab.com/stavros/sensor-board/ I've built cat toys for my blind cat, toy planes, a CNC, a cat feeder, a back-scratching robot, and more stuff…

I've been thinking about creating some more interesting interactive cat toys like this -- wiring the hardware and doing the programming are pretty easy, but where I'm stuck is building the actual cat toy bits that the electronics control! How have you approached this in your projects?

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#89
My first contact with ESPHome revived an old ESP32 sunrise alarm clock project of mine whose hardware was all complete but software was half-baked shoddy C++. It has adjustable color temperature (to wake me up with blue light) and can play arbitrary MP3s as an alarm.

After discovering this power I also threw together an ESP32 timelapse device that plugs into the remote shutter port on my DSLR, configurable over Home Assistant of course. Was thinking of using the camera on the ESP32-CAM to take automatic photos of planes (computer vision??), but haven't gotten round to that yet.

ESPHome really is great for replacing the code I can't be bothered to write - it's hard to do after just having put together the hardware. The next project on the list is an environmental sensor and curtain opener for my room, using an ESP8266 and RS-232 controlled servo module (what I have laying around).

Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware

#90
I connected an ESP8266 via serial protocol to the extra programming pins on a QMK based keypad (https://www.crowdsupply.com/anavi-technology/anavi-macro-pad...) so that it can have layers that directly trigger actions via Home Assistant API.

Also use the Bee Motion ESP32-S3 (https://www.crowdsupply.com/smart-bee-designs/bee-motion-s3) for their PIR motion sensing and running other sensors around the house.

And I have an old Wemos D1 mini connected to my Arduino based smart garage door that helps automate things like lock/unlocking the front door or triggering other presence based actions.

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