My GPT-powered e-Ink newspaper uses an esp32: https://imgur.com/a/NoTr8XX
oh wow that's gorgeous!
Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
11–20 of 157 posts
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#12I built a toilet occupancy light for the office. We had a long office with a single toilet, so built a battery powered closed-door detector on one side, and a mains-powered sign that indicated whether the toilet was free or not.
Very reliable, ESPHome was never an issue. This was circa 2018.
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#13I only got a proof-of-concept working, but I made a board that would allow payment for arcade games and pinball machines over wi-fi without disabling the coin slot. Free-play can be enabled by sensing the P1 and P2 start buttons. Security was an interesting puzzle because the 8266 ran out of memory when trying to host an SSL stack, so I went with HMAC signed messages.
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#14I made my standing desk "smart": https://community.home-assistant.io/t/desky-standing-desk-es...
I love that! Now I am seriously tempted to hack up the control unit of my Fully and get it into Home Assistant so I can adjust the desk with a slider on the laptop for ... reasons.
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#15I built a CO2 sensor that activates a fan in my office room to pull in fresh air if the CO2 levels go above 700ppm
I like this idea, any recommendations on specific CO2 sensor modules?
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#16[deleted]
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#17I use it to monitor my water meter in Home Assistant and have one sensor that reads various values (e.g. water temperature) from our domestic water heat pump via Modbus. The latter one could also be controlled with the ESP, however writing to Modbus makes me feel a little uneasy (that is mostly due to lacking documentation by the manufacturer, who apparently outsourced the firmware part).
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#18I built a little robot that props open a door when the av cabinet gets too hot. It has a temperature sensor, two fans and a linear actuator. It even has a small webui so I can manually enable/disable cooling. Been working for several years.
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#19I have not built anything novel — just utilizing community projects have been a wonderful improvement at home:
1. Ratgdo for the garage door
2. Esphome EcoNet for my water heater
3. Off the shelf Sonoff switches for some holiday lighting.
All of this is tied with a bow via Home Assistant.
Re: Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
#20I used an ESP8266 to build an air conditioning "remote" that I can control with my Home Assistant setup. I was pretty surprised when I moved and it still worked at the new apartment. I also bought some LED matrix displays that I'm going to use to display information about when trains are due at my nearby station.
There is a wide library of IR remote glue code at
https://github.com/crankyoldgit/IRremoteESP8266/tree/master/...