Here are seven places you might not expect to find an ESP32. Combine an ESP32 development board with a CAN transceiver like the MCP2551 and the ESP32 OBD2 project, and you can build your own tool for gathering diagnostic data about your vehicle. Knowing how much water you have left without having to peer in and estimate is one job you can outsource to an ESP32. Under the soilStop over- and under-watering your plantsCredit: Adam Davidson / How-To GeekCredit: Bertel King / How-To GeekCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekClose Credit: Adam Davidson / How-To GeekCredit: Bertel King / How-To GeekCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekSoil moisture sensors can alert you when it’s time to water your plants. The ESPHome Litterbox Monitor uses load cells, a load cell amplifier, an ESP32, a litter box, and a cat.