SunFounder ESP32 Starter Kit
The system uses a DHT11 sensor to measure the temperature and humidity levels of the surrounding environment.
Meanwhile, a soil moisture module is used to measure the moisture level of the soil and a photoresistor is used to
measure the light level. The readings from these sensors are displayed on an LCD screen, and a water pump can be
controlled using a button to water the plant when needed.
IO32 has an internal pull-down resistor of 1K, and by default, it is at a low logic level. When the button is pressed, it
establishes a connection to VCC (high voltage), resulting in a high logic level on IO32.
Wiring
Note: It is recommended here to insert the battery and then slide the switch on the expansion board to the ON position
to activate the battery supply.
3.40. 6.8 Plant Monitor 441
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