5 ESP32 projects that replace smart home gadgets you'd otherwise pay a subscription for

For those looking to replace subscription-based smart home devices, ESP32 boards offer a budget-friendly alternative. With a modest investment of less than $100, you can assemble various projects that can potentially replace expensive, cloud-reliant gadgets. A popular use for ESP32 units is in room occupancy sensors, which can control lighting, HVAC systems, and speakers locally, without the need for cloud-based solutions.

To enhance the accuracy of room occupancy detection, an mmWave sensor paired with an ESP32 and ESPHome can provide reliable results, avoiding false positives from cheaper motion sensors. For temperature readings, ESP32 modules paired with accurate sensors like the BME280 or DHT22 can replace paid weather APIs and stations, providing local control over HVAC systems.

Combined with a text-to-speech model and voice input/output capabilities, an ESP32 can also serve as a custom smart voice assistant, bypassing privacy concerns and compatibility issues associated with proprietary assistants like Alexa and Google Home. When it comes to home automation panels, an ESP32 can be equipped with a display board like the ESP32-P4, providing a customizable dashboard for smart home gadgets.

In the realm of security, ESP32-CAM modules offer a cheaper and more privacy-conscious alternative to cloud-based security cameras, especially for surveillance of less frequented areas. Additionally, ESP32-powered security solutions can be used for DIY controllers for dumb devices and water leak detection, providing a cost-effective and privacy-friendly solution for various home automation needs.