Automatic drip irrigation control system based on MQTT protocol

Achieve the following results:
(1) Integrate the physical layer protocol through a dedicated chip and use the MQTT protocol to communicate with the cloud platform.
(2) Monitor the moisture content of the soil through a humidity sensor, and upload the data to the cloud platform through the Internet of Things.
(3) Monitor the moisture content of the soil through the IoT cloud platform. When the water content does not meet the requirements, instructions are issued through the cloud platform to perform watering actions.
(4) When the moisture content of the soil exceeds the requirements, the upper computer can issue an early warning, and the system white light will always be on, automatically turn off the relay (water pump), and reset the status after 5 seconds; when the soil is particularly dry, the lower computer will automatically perform watering. Water, the status will be reset after 5 seconds.
(5) The power consumption of normal operation is less than 0.5W as shown in Chapter 3, achieving the purpose of low-power design.
(6) The original intention is to achieve low-cost mass production while taking into account the ease of use of the interface and reducing resource consumption.