This smart plant watering kit contains a water pump, soil moisture sensor, 50cm water pipe, relay module, etc., which can water according to the humidity in the soil. This kit automatically waters vegetable gardens and controls soil moisture in pots. You don't need to worry about your plants when you're out and about.
Specification
Test the relay module: connect the relay module VCC to 5V, GND to ground, IN to GND, and the relay jumps. When IN is floating, the relay recovers, so you can hear the "click" sound of the relay repeatedly.
Test the soil moisture sensor module: Connect the fork probe and transmitter module to the two Dupont wires from the transmitter module. VCC is connected to 5V, GND is grounded, just powered on, the red power light is always on, and the green (blue) color indicates. The light flashes once, the fork probe is directly inserted into the water, and the green (blue) light is on.
Connect the line of the water pump to 5V, the black line is grounded, the water pump works, pay attention to the test for 1 second, and do not allow to work in the air for a long time.
Do not pour water directly on the sensor. The humidity of the water can cause the sensor to rust.