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  • A small review of ujin aqua water leak sensors

    17.05.2025 ncrmnt

    It’s been a long while since I wrote something interesting in this blog. Well, since I’m no copywriter, have no ads and don’t use any dumbass neural nets and write everything by hand – it does take a while. And today I got an interesting thing to write about. I got my hands on a […]

  • Adapter for gang-flashing CB2S modules

    11.09.2023 ncrmnt

    A few weeks ago I needed to stock on smart power outlets for my lab. I ordered known WiFi-controlled outlets that have been known by me to contain esp8266, so that I could flash them with esphome. To my surprise, instead of a very well-known esp8266 module, they had some weird CB2S module from Tuya. […]

  • 2 ways of fixing broken Aqara zigbee switches

    28.05.2023 ncrmnt

    Aqara switches are somewhat very common zigbee light switches. I moved to these a few years ago and they worked without an issue up until about now. And now, guess what: Mechanics failed. So I decided to document 2 different ways of fixing them in this very post.

  • Making ezShare WiFi SD work seamlessly with OpenWRT, docker and other black magic

    10.02.2023 ncrmnt

    Basically an SD card with WiFi. At one time there were even Transcend cards with OpenWRT on them, but they ran out quickly and I didn’t manage to get my hands on any of them. They were replaced by cards with an obscure chip from some weird lzeal. I managed to find a little to […]

  • Flashing Philips E14 Smart LED Bulbs with esphome

    08.01.2022 ncrmnt

    One day I needed to add an automated light near the stairs. Motion sensor was already in place, I only needed some bulbs I could turn on and off remotely and I was not feeling like doing any DIY that time. So I picked a few ZigBee bulbs with E14 socket. What could possibly go […]

  • Useful scripts: Compiling big projects remotely

    05.01.2022 ncrmnt

    At the very start of the New Year I decided it’s big time to clean up all the trash from my ‘useful scripts’ folder. Wipe most, improve and document the most useful ones. (And check how the new syntax highlighting plugin works in wordpress and how the content shows up in Medium). I’ll start with […]

  • Optimizing ESP8266/ESPHOME for battery power (and making an ice bath thermometer as well)

    06.12.2021 ncrmnt

    It’s been a long while I wanted to check for how long can an esp8266 with esphome last on a battery supply. Yet I didn’t have a reason to get it done. Time to fix that and add yet another battery optimization manual for ESP8266 to the internets. And what’s the big reason? The story […]

  • Distributing python apps for windows (and dealing with the pain)

    14.08.2021 ncrmnt

    Even though I’m mostly a linux user, I sometimes have to deal with windows (and, heck, well even mac sometimes). And not only to fire up steam and relax playing some game or wandering in VR worlds (unfortunately). So this time I had to deal with distributing a python app that should be available for […]

  • nRF24L01+: Manually calibrating the antenna with MySensors and … HomeAssistant

    11.01.2021 ncrmnt

    Perhaps the final post about the good old nRF24L01+ and the shady Chinese suppliers that tend to optimize all freakin’ bits and pieces. This time I will tell how to create a simple RF calibration station to verify the modules are properly operational and how to manually fix those that are not.

  • nRF24L01+: Fixing the “magic finger” problem

    03.01.2021 ncrmnt

    This time I was spending the holidays as usual away from the city, further improving my smarthome. This time I was installing a bunch of devices with nRF24L01+ radios. When I was running out of spare nRF24L01+ modules, I noticed that I was left with a bunch of weird modules that kind of work, but […]

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