Explore home automation through smart switches, sensors, and more. Configure Sonoff WiFi smart switches. Modify smart switches to add programming headers and flash alternate firmwares. Set up Home Assistant, MQTT, and integrate smart home hubs like Amazon Alexa or Google Home. Assemble DIY WiFi smart nodes using Wemos ESP8266 modules. Configure WiFi smart nodes as switch control points, sensor points, or both. Explore multiple sensor options for smart home operations. Experiment with pulse oximetry and heart-rate monitoring.