https://omarghader.github.io/tags/hc-sr501/Recent content in hc-sr501 onHugo -- gohugo.ioen-USTue, 14 Jul 2026 00:00:00 +0000https://omarghader.github.io/esp32-weather-station-security-pir/Tue, 14 Jul 2026 00:00:00 +0000https://omarghader.github.io/esp32-weather-station-security-pir/A few months ago I cobbled together a simple ESP32 weather station that dutifully reported temperature and humidity to my Home Assistant dashboard. It worked great until my cat decided the breadboard was a better bed than the couch. While the weather station slowly transitioned into a fur-covered sensor graveyard, I needed something else to do with the spare ESP32 Development Board Module I had lying around. That’s when the idea hit me: why not repurpose the same hardware I used for a weather station into a dead‑simple motion alert system?