ITEM NAME:Automatic Water Irrigation Relay Module Sensor DIY Kit Soil Moisture Detection Product Description Description: 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 module 1 soil moisture probe + comparison module 1 small water pump 1 battery box 1 USB power cord Silica gel software 50cm (water pipe default 50cm) need to be lengthened, please purchase separately 10 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 .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;.
