Category: IoT
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Yet Another ESP32 Webcam
Link to the original blog post with a nice text & pictures layout. The problem: I used an old phone with an Android IP Webcam app to check my driveway, but it stopped working after 3 days. Then I had to reset it – this means going up the ladder every single time. I couldn’t…
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Bathroom dehumidifying using a floating humidity threshold
Blog: Bathroom dehumidifying using two sensors and a floating humidity threshold. Link to the original blog post with a nice text/pictures layout. The problem: The bathroom fan is running too long if it’s raining outside. A year ago I automated the dehumidifying of the bathroom using an extraction fan, Sonoff mini switch, Xiaomi Mi BLE…
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Homemade ESP32 webcam
Homemade ESP32 webcam Link to the original blog post with a nice text/pictures layout. The problem: I want to see what’s happening around the house, especially if the dog is naughty again and digging holes. Actually, there is no problem. I just like to tinker. The solution: A cheap webcam (10€) integrated in #homeassistant. HW…
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Unlocking the front door using the mobile phone and Home Assistant
Link to the original blog post with a nice text/pictures layout. The problem: The solution: HW parts: SW: The process: Here’s the doodle of the connecting scheme: Here’s the original connecting scheme from Innotherm (door manufacturer), in Slovenian: It was useful because it reveals which power supply is appropriate (Meanwell MW HDR 30-24). 7. Fitted…
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How I killed e-ink display
TL:DR: I don’t know how, but it no longer works. In the previous post, I shared the joy of making #ESP32 #Lilygo T5 2.13′ e-ink display finally work and show some sensor data from #homeassistant. The joy lasted only a week. Yesterday I decided I’d print a nice case for it. I found a great…
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E-ink display showing temperatures from Home Assistant
I had this #esp32 #lilygo board* laying in the drawer for more than 2 years. I tried several times to make the e-ink display work without success.Today I flashed it again with the latest #esphome firmware, stole some code from the web, tinkered for 2 hrs with #yaml and lambdas and whatnot and suddenly… it’s…
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Home Assistant and nice statistics graphs
One of the things that bothered me in #homeassistant for more than a year was the following: I couldn’t figure out why some entities/sensors can draw nice longterm statistics graphs like this (with average, max, min values): and some show only bulky history charts (10 days of data) like this: #til Today I learned I…
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Detecting movement in Home Assistant using Ikea Vallhorn sensor
I’ve bought some #Ikea #Vallhorn motion sensors for 8€ a piece. (see info here) Pairing to the #Zigbee network in #HomeAssistant and #Zigbee2MQTT was somehow difficult, which is not usual for Zigbee devices (at least according to my limited experiences with them). Nevertheless, I succeeded in pairing them. Unsuccessful attempts Firstly I tried to pair…
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Simple tablet charge controller using Sonoff’s ZBMini
I’m using an Amazon #FireHD tablet stuck to my fridge with several magnets and 3D printed case as a #homeassistant dashboard. I read it’s bad for the tablet’s battery if it’s constantly plugged into a charger. Battery can swallow or worse. So I installed Sonoff’s #ZBMini (Zigbee) smart switch into a socket where the charger…
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When did I change the batteries in my sensors?
Last month I learned about the integration which helps track battery change status in various devices connected to #homeassistant. Today I finally had some time to install #HACS integration (source) called ‘Battery Notes‘ which was written by Andrew. After the installation and HA restart, it automatically found my #Aqara battery devices (#Zigbee buttons, magnetic door…