植物浇水电路
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下面是 [植物浇水电路]的电路图
本电路的目的是给出一种信号，即当一种植物需要水，花盆地面过于干燥，能发出一种信息，水分含量增加一个LED闪烁。调整R2将允许用户更好地适应了不同的理由，盆和探头类型电路的灵敏度。
材料BOM表：
R1 = 470K
R2 = 47K
R3 = 100K
R4 = 470K
R5 = 3.3K
R6 = 15K
R7 = 100R
C1 = 1nF-63V
C2 = 330nF-63V
C3 = 10µF-25V
C4 = 10µF-25V
D1 = 1N4148
D2 = 5mm. Red LED
Q1 = BC557 PNP Transistor
P1 = Probe (See Notes)
P2 = Probe (See Notes)
B1 = 3V Battery (2xAA, N or AAA 1.5V Cells in series)
IC1 = 4093 = Quad 2 input Schmitt NAND Gate IC
(责任编辑：电路图) R2 = 47K
R3 = 100K
R4 = 470K
R5 = 3.3K
R6 = 15K
R7 = 100R
C1 = 1nF-63V
C2 = 330nF-63V
C3 = 10µF-25V
C4 = 10µF-25V
D1 = 1N4148
D2 = 5mm. Red LED
Q1 = BC557 PNP Transistor
P1 = Probe (See Notes)
P2 = Probe (See Notes)
B1 = 3V Battery (2xAA, N or AAA 1.5V Cells in series)
IC1 = 4093 = Quad 2 input Schmitt NAND Gate IC
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