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Capacitive Liquid Detection

With the help of Arduino

Capacitive Liquid Detection
Some time ago Elektor published my siphonic rain gauge with no moving parts, in which the water that passes when a little siphon empties is detected by short-circuiting two electrodes. At the same moment, articles were in preparation showing that capacitive detection would have a decisive impact. Here I investigate if the “approaches” can be joined.
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Products
Relevant websites
Component List
Resistors (0.25W)
R2 = 10kOhm
R1 = 100kOhm
Capacitors
C1 = 100nF
Semiconductors
IC1 = 74HC4060N
Miscellaneous
K1 = 3-pin pinheader
K2 = 2-way PCB screw terminal, 0.2’’ pitch
S1 = 8-way DIP switch block
PCB # 140130-1 v1.0
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