1. New Soil Moisture Sensor: The principle of capacitive detection is used to detect soil moisture. The problem that the resistive sensor can be easily corroded is avoided, which greatly prolongs its working life.
2. Built-in voltage regulator chip supports a wide voltage 3.3~5.5V working environment, which means it can work normally even on Arduino 3.3V main control board. A miniature PC like Raspberry Pi only needs an external ADC conversion module (analog signal to digital signal) to work.
3. An external screen, a motherboard, you can talk to your system! Look beloved, thirsty, do not need a little more water to hydrate.
