Automatic Water Irrigation Relay Module DIY Kit Soil Moisture Detection, 501 Original

Explain:It is asked whether the sensor supports the measurement of soil absolute humidity value. The technology popularizes the knowledge that absolute humidity value is for the air, which refers to the quality of water contained in one cubic meter of air. However, the indicator cannot be measured and has no discussion value in the soil due to the uneven dissolution of water in the soil. The board can measure the humidity and decide the switch of the watering equipment according to the humidity. The sensitivity can be adjusted by potentiometer.Specifications:Components included in package:1 relay module1 soil moisture probe + comparison module1 small water pump1 battery box1 USB power cordSilica gel software 50cm (water pipe default 50cm) need to be lengthened, please purchase separately10 DuPont wires (when connecting wires, it is necessary to strip, screw and provide 10 wires for sufficient use. If necessary, please purchase separately.)Note:This set is a loose part, which needs to be wired or even soldered by yourself. The specific wiring method has a schematic diagram.We do not provide technical support and are not good at hands should purchase it carefully!This product does not need programming, nor does it include MCU, so please don't force us to provide code.This product doesn't provide power. You can use the power supply of the power bank (5V DC), or use 4 AA battery boxes and install 4 batteries to supply power.(batteries are not included)For each part of the test:1. Test the relay module: connect the VCC of the relay module to 5V, GND to ground, in to GND, the relay will jump, in is suspended, the relay will recover, so you can hear the \"stuck\" sound of the relay repeatedly;2. Test the soil moisture sensor module: connect the fork probe and the transmitter module with two DuPont wires, VCC of the transmitter module is connected to 5V, GND is connected to ground, the red power light is always on when the power is just turned on, and the green (blue) indicator light flashes faintly once; insert the fork probe directly into the water, and the green (blue) indicator light is on;3. Connect the red line of the water pump to 5V, the black line to ground, and the water pump works. Pay attention to the test for 1s, and do not work in the air for a long time;4. Assemble according to the schematic diagram.Be careful:1. This product can avoid welding, but you need to strip the wire, screw the copper wire together and protect it with black tape;2. The water pump cannot be operated in the air for a long time;3. The system is well connected, powered on, and the water pump works all the time, which is right. Because in the air, the probe can't detect the humidity, so the water pump works all the time, and there is no problem if it is correctly installed in the flowerpot.Notes:1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-3cm measuring deviation due to manual measurement.1 X Relay Module1 X Soil Moisture Probe + Comparison Module1 X Small Water Pump1 X Battery Box1 X USB Power Cord1 X Silicone Tube10 X DuPont Lines