Smart Home DIY/Home IoT on Sobamemil https://blog.sobamemil.com/en/categories/smart-home-diy/home-iot/ Recent content in Smart Home DIY/Home IoT on Sobamemil Sobamemil https://blog.sobamemil.com/images/og-image.png https://blog.sobamemil.com/images/og-image.png Hugo en Thu, 13 Aug 2026 14:14:00 +0900 Atomy Air Purifier (AAP-KR19W) Filter Replacement https://blog.sobamemil.com/en/posts/atomy-air-purifier-ha/ Thu, 13 Aug 2026 14:14:00 +0900 https://blog.sobamemil.com/en/posts/atomy-air-purifier-ha/ <p>I already got this Atomy air purifier (AAP-KR19W) <a href="https://blog.sobamemil.com/en/posts/195-ha-diy-%EC%95%A0%ED%84%B0%EB%AF%B8-%EA%B3%B5%EA%B8%B0%EC%B2%AD%EC%A0%95%EA%B8%B0-home-assistant-%EB%A1%9C%EC%BB%AC-%EC%97%B0%EB%8F%99-%EB%B0%A9%EB%B2%95-tuya-esp8/">running locally on Home Assistant</a> and <a href="https://blog.sobamemil.com/en/posts/196-ha-diy-%EC%95%A0%ED%84%B0%EB%AF%B8-%EA%B3%B5%EA%B8%B0%EC%B2%AD%EC%A0%95%EA%B8%B0-pms9003m-%EB%AF%B8%EC%84%B8%EB%A8%BC%EC%A7%80-%EC%84%BC%EC%84%9C-%EA%B5%90%EC%B2%B4%EA%B8%B0/">replaced its dust sensor</a> in earlier posts, and it's been running well since. This time the filters were due for a change, so here's that.</p> <h2 id="the-two-filter-set-design">The two-filter-set design</h2> <p>The best thing about this purifier is its oversized filter system: a black deodorizing filter and a white non-woven filter stacked together. Since it's a large unit, filters go in both the top and bottom, so a full replacement means buying two of these stacked sets.</p> Commax Wallpad Home Assistant Integration and Elfin EW11 Setup Guide https://blog.sobamemil.com/en/posts/commax-wallpad-ha-integration/ Thu, 13 Aug 2026 14:12:00 +0900 https://blog.sobamemil.com/en/posts/commax-wallpad-ha-integration/ <p>The wallpad that comes standard in most Korean apartments is wired into the lighting, heating, ventilation, gas valve, and even the elevator call button, which makes it both an appealing target and something you eventually have to deal with if you're serious about a smart home.</p> <p>The new apartment I moved into has a Commax wallpad installed. This post covers the first step toward Home Assistant integration: analyzing the hardware and locating the communication lines.</p>