Automatic Irrigation Module DIY Kit

Some customers asked whether the sensor supports measuring the absolute humidity value of the soil. The technology popularizes the knowledge. The absolute humidity value is for the air, which refers to the quality of the water contained in one cubic meter of air, and the indicator is in the soil due to the soil to water. The dissolution is not uniform, so it cannot be measured and there is no discussion value. The board can measure humidity and determine the watering device switch according to the humidity. The sensitivity can be adjusted by the potentiometer. The products are sold in multiple sets, the quality is stable, and it is trustworthy!
 
This product does not require programming or a microcontroller, so please do not force the buyer to provide the code.
 
This product does not provide power, you can use the charging treasure (5V DC) as the power supply, or use 4 5th battery box and load 4 batteries
 
About each part of the test:
1. Test the relay module: connect the relay module VCC to 5V, GND to ground, IN to GND, the relay jumps, and when IN is suspended, the relay recovers, so you can hear the relay "Kaka" sound repeatedly;
2. Test the soil moisture sensor module: connect the fork probe and transmitter module with two DuPont lines, the transmitter module VCC is connected to 5V, GND is grounded, just after power-on, the red power light is always on, green (blue) color indication The lamp flashes faintly once; the fork probe is directly inserted into the water, and the green (blue) light is on;
3. Connect the red line of the pump to 5V, the black line is grounded, the pump works, pay attention to the test for 1 second, and it is not allowed to work in the air for a long time;
 
note:
1. this product can be free of welding, but you need to peel the wire, twist the copper wire together, and protect it with black tape;
2. The pump cannot be operated in the air for a long time;
3. the system is connected, power on, the pump has been working, it is correct, because in the air, the probe can not detect the humidity, so the pump has been working, there is no problem in the correct installation into the pot.