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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

#151

Post by KAKAN »

multipolygon wrote: post #150

Hi, Ive made an e-paper wrist watch: https://github.com/multipolygon/esphome-for-watchy/blob/main... and an RFID-card mp3-player music box for a toddler: https://blog22.multipolygon.net/rfid-music-box.html

How cool! I've been wanting to build the exact same thing as your RFID-MP3 player, but thinking of going with a better DAC to power an amp+speakers combo.

I really, really miss CD and cassette players too. Vinyl is not my kind of thing, and CD Players nowadays are either unavailable or just too expensive for what they are.

My other choice was to just use a RasPi and an actual DVD player as a headless player, but I think doing it with a µC might be much more fun :D

Congrats on your project, though, they both seem and look really fun! Cheers <3

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

#152

Post by electricant »

I built a series of iot sensors and actuators for home heating. All based around the same modular firmware and hardware concept [0].

We have 3 of those boards scattered around the house and one sitting outside reporting external temperature, humidity, pressure and air quality. The 3 boards inside measure the same values as well but also control the heating system.

Finally, all the data is sent to a raspberry pi over mqtt for logging. Data is presented over a web interface which also allows to set the desired temperature.

Oh, and also a clock with date and time synchronized over NTP showing the external temperature and humidity. Super useful to get dressed in the morning ;) [1]

[0] https://github.com/broken-giobbe/ceci [1] https://github.com/electricant/ESP8266_NTP_clock

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

#153

Post by multipolygon »

KAKAN wrote: post #151
multipolygon wrote: post #150

Hi, Ive made an e-paper wrist watch: https://github.com/multipolygon/esphome-for-watchy/blob/main... and an RFID-card mp3-player music box for a toddler: https://blog22.multipolygon.net/rfid-music-box.html

How cool! I've been wanting to build the exact same thing as your RFID-MP3 player, but thinking of going with a better DAC to power an amp+speakers combo. I really, really miss CD and cassette players too. Vinyl is not my kind of thing, and CD Players nowadays are either unavailable or just too expensive for what they are. My other choice was to just use a RasPi and an actual DVD player as a headless player, but I th…

Thanks! My RFID project there is probably very over-complicated compared to a "proper" audio setup like you describe. Really all you would need is a Raspberry Pi to host a MQTT server and play a stream from Spotify (or similar). You could then use ESPHome as a simple RFID-to-MQTT reader, which would be extremely simple with ESPHome and is the kind of project that ESPHome makes beautifully and laughably simple!

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

#155

Post by KAKAN »

multipolygon wrote: post #153
KAKAN wrote: post #151

Earlier quoted context omitted.

How cool! I've been wanting to build the exact same thing as your RFID-MP3 player, but thinking of going with a better DAC to power an amp+speakers combo. I really, really miss CD and cassette players too. Vinyl is not my kind of thing, and CD Players nowadays are either unavailable or just too expensive for what they are. My other choice was to just use a RasPi and an actual DVD player as a headless player, but I th…

Thanks! My RFID project there is probably very over-complicated compared to a "proper" audio setup like you describe. Really all you would need is a Raspberry Pi to host a MQTT server and play a stream from Spotify (or similar). You could then use ESPHome as a simple RFID-to-MQTT reader, which would be extremely simple with ESPHome and is the kind of project that ESPHome makes beautifully and laughably simple!

My idea was even simpler tbh, I'd make a bunch of m3u files, and rename them with a SHA1 hash. Then just put the hash value in RFID tags. Yes, it's not as remotely extendable, but then again, I've like 5 or 6 offline-only playlists that I keep playing on repeat according to my mood, so I'd be fine haha

Maybe throw in album hashes or something. Extremely minimal, and everything inside the box. There won't be any Wi-Fi connections at all. Of course, this does limit some things, but eh. Maybe I'll add a WebUI for controlling volume and such, but that would be it, I guess :D

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

#156

Post by Shish2k »

slake wrote: post #113
Shish2k wrote: post #94

I made a glowy box that takes up 1U in my homelab rack and represents my home internet reliability - an esp32c3 (risc-v, experimenting with the rust support) which pings 8.8.8.8 every minute and shows the past 30 minutes of results on a strip of 30 LEDs (green -> red for ping time, blue for errors)

That's a great project. Have you documented anything. Sounds doable, but a leg up would be great.

It was very hacky and no guarantees of it working for anybody else, but a quick dump of the project folder :)

https://github.com/shish/esp-ping-leds/

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

#157

Post by multipolygon »

yjftsjthsd-h wrote: post #118
stavros wrote: 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…

> along with IR transmitter so I can control my TV/AC Any pointers for doing this? I've wanted to do this for a while

AC is super easy with ESPHome, eg:

https://esphome.io/components/climate/climate_ir.html

TV also:

https://esphome.io/components/remote_transmitter.html

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