Learn how to build an improved multi-sensor device with motion, temperature, humidity, and light level sensors in this 30-minute tutorial. Explore the components, including a NodeMCU ESP8266, RCWL-0516 microwave motion sensor, AHT20 temperature and humidity sensor, and LM393 photoresistor module. Follow along as the video demonstrates bench testing of individual components, integrating with ESPHome firmware, and connecting to Home Assistant. Discover assembly techniques, enclosure options, and final installation testing. Gain insights into enhancing your smart home setup with this DIY multi-sensor project, complete with parts list, wiring diagrams, and code samples available in the accompanying blog post.