植物缺水告警器
Parts:R1___________470K1/4WResistorR2_____________3K31/4WResistorR3___________100K1/2WTrimmerCermetC1_____________1nF63VPolyesterCapacitorC2____________47μF25VElectrolyticCapacitorD1__________1N414875V150mADiodeD2_____________5mm.RedLEDIC1___________4093Quad2inputSchmittNANDGateICP1,P2_______Probes(
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