Yesterday I noticed that the pool pump wasn't running. I checked the power consumption logs and found it hasn't been running for a few days. This is very bad! High risk of soup pool.
After fixing the issue with the pump, I set up an automation in #homeassistant : At 09:30 every day, check the power consumption of the pump. Send an alert to my phone if it's less than 1.5kW.
All thanks to #foss!
Gonna re-post my guide for anyone with a Mitsubishi Electric split-system Air con from the last 10ish years, on how to integrate it with Home Assistant/ESPHome for $20 with one extremely easy, reversible, safe hardware addition!
I've been running it without issue for 9 months now, and others have successfully followed my process.
https://github.com/echavet/MitsubishiCN105ESPHome/discussions/183
Original post here: https://cathode.church/@s0/113509209574322642
I've used the integration to do stuff like automatically turn off the aircon an hour after I go to sleep, and put an automation so if we leave the house, it'll turn the aircon off in case we forgot. I also built an automation to run it in fan only mode on low for 15 minutes after being on cooling, to evaporate the moisture inside that otherwise leaves to building up mould.
Today I was able to play around with @esphome@fosstodon.org and #HomeAssistant
Turns out that outsourcing the voice processing might be a bit slower but it's working great so far.
I will try to switch over to the faster alternatives. But I am quite happy that I managed to get this Esp S3 screen working with cards so the device shows other interesting things while idle.
Btw: "Retro" is one of our lights in the office.
#foss #homeAutomation #ESPhome
I've begun documenting this project to provide everyone with an easy entry point:
https://git.hierl.dev/benny/SmartMeter-LoRa-Sensor
#ESPHome #ESP32 #LoRa #SmartMeter #IoT #SmartHome https://mastodontech.de/@benny/114890682018424172
Integration des Multical 303 Wärmezählers in Home Assistant via Wireless M-Bus
Integration des Multical 303 Wärmezählers in Home Assistant via ESP32 & CC1101 – kostengünstige wM-Bus-Auslesung zur Verbrauchsüberwachung.
#Home_Assistent #ESP32 #ESPHome #Linux
https://gnulinux.ch/integration-des-multical-303-in-home-assistant-via-wireless-m-bus
I have half a dozen new #ESP32 devices lying around, and I'm not sure what to do with most of them
I wanna try and use one to make my air filter smart, and maybe turn two or three into #EspHome Bluetooth Proxies to use them for indoor location tracking through Bermuda
That leaves me with still a few spares, any ideas for cool projects I could use them for? 
Solder Smarts: Hands-Free Fume Extractor Hack - [Ryan] purchased a large fume extractor designed to sit on the floor below the wor... - https://hackaday.com/2025/07/09/solder-smarts-hands-free-fume-extractor-hack/ #microcontrollers #homeassisstant #fumeextractor #wemosd1mini #toolhacks #esphome
Second round, this time the #HomeAssistant on my #RaspberryPi4 - I still had a 32-bit install and it was time to migrate. Support ends this year and #ESPHome already couldn't be updated any more.
It was relatively easy - create a #backup on old system, boot a new install and select #restore on the setup page.
It took a while to restore everything, and I got impatient, but after around 30 minutes it was finished and everything like before.
#RaspberryPi #HomeAutomation
My latest #homeassistant #esphome project: A parking assistant for the garage.
Our garage is fairly small and the only spot for the refrigerator is against the back wall. This makes parking challenging, since there's only a few inches difference between clearing the garage door and leaving space to open the refrigerator door.
I designed this device to make it easier to park the car in the sweet spot. Design details to follow in the next post...
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I am still impressed with that proper AI can do. I was hitting my head against the wall trying to format data (printf-like stuff) in esphome lambda's, like the display components supports. And after spending a minute to properly prompt an AI, it understood #homeassistant, #esphome yaml syntax, and the C-context lambda's are in. It found the function i needed, and surrounded it with a setup and return. Even in niche situations it is now an invaluable tool. #domotica #homeautomation #ai
Reliving VHS Memories with NFC and ESPHome - Like many of us of a certain vintage, [Dillan Stock] at The Stock Pot is nostalgic... - https://hackaday.com/2025/07/03/reliving-vhs-memories-with-nfc-and-esphome/ #homeentertainmenthacks #physicalmedia #classichacks #cartridge #esphome #esp32 #nfc
Wondering how to make the battery last longer on my #ESPHome display thing. I think I want to make it sleep pretty much most of the time, except a couple of fixed times a day, or if I press a button. Somehow!
Mein CO2 Sensor hat jetzt einen Batman Modus. 
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(Manchmal sind die Sensoren noch nicht initialisiert, wenn das Display zum ersten Mal nach dem Booten aktualisiert wird. Dann liefern die den Wert NaN not a number.)
#gpn23 #CO2Monitor #esphome #selfhosted #batman
It’s janky but it works! Need to de-jank it somewhat now but I’m pretty happy with this so far! I think I will need to find a better reservoir!
#m5stack #homeassistant #esphome #plants #homeautomation #diy #maker @esphome
Aughhhhh. This works when it's running in my office. It even sees the zwave devices through a cinder block wall!
When I move in into the garage it _refuses_ to connect to wifi, even with a brand new access point that it has line of sight to.
Infuriating!
Water tank level sensor: 4–20mA current loop, ESPHome, and Home Assistant
Our house water comes from a rain water tank. I built an ESPHome device, based on an Olimex ESP32-PoE2, to interface a 4-20mA current-loop liquid pressure sensor, and keep track of the water level in Home Assistant.
YAML defintions for #esphome are great until you need to do anything _mildly_ complicated.
Return air duct booster to get all the hot dog breath out of our bedroom. 7” noctua fan. The black box contains an esp32s2, a 7805 to drop the 12v that supplies the fan to 5v the micro’s regulator can handle, a Si7021 temp/humidity sensor, and a level shifter so we can give the fan a 5v pwm signal. Allows a 300-900 rpm range for the fan. Firmware is 150 lines of yaml for #ESPhome so it can report to my #HomeAssistant setup.
Every time I do a PiHut order I add on a few extra M5Stack components.
Got an OLED display and an 8Angle working with #ESPHome to play around with.
The display is for pro-typing how I want to add a display to the #HomeAssistant Voice PE.
The 8Angle is just for testing, I like to emulate battery percentages, moisture levels etc in automations and it's great to have a tactile physical thing rather than jumping back and forth to an input number helper.
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