at89s52 microcontroller automatic plant waterer design, optional display module lcd1602 LCD the timing chip select Ds1302, solenoid valve dc12v the. When the microcontroller is powered on, the interface will display the current time in the current relative humidity, and can be realized in the mode setting time adjustment and plant waterer function selection. This smart water the flowers set in two ways: First, the timing quantitative gardening, humidity sensor detects humidity Flower (soil), humidity collected is sent to the microcontroller chip, the microcontroller based the humidity control whether watering when needed watering , the microcontroller pin p1.5 set low (microcontroller is powered on when the port will be set high, we are using the inverter, the relay low ON), the relay coil energized, normally open contact closure, open the solenoid valve to achieve the regular quantitative automatic watering, to set the time, the solenoid valve is automatically closed, and the flow tim

da1302.c

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