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Std edition Water level detector

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Published Time: 2019-12-14 21:48:37
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Description

Water detector with 4 level stages. Each stage makes the 555 timer to give a supply period for the buzzer. The active buzzer transmits sound with a pause period between 0.5-3 seconds, depending on the level detected.

design drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 LM339DR U1 SOIC-14_150mil 1
2 CD4066BM96 U2 SOIC-14_150mil 1
3 NE555DR U3 SOIC-8_150MIL 1
4 1.5k R1,R2,R3 0805 3
5 1M R17,R4,R5,R6,R7,R8,R9,R10,R11,R12,R14 0805 11
6 1 Pin Header JP2,JP3,JP4,JP5,JP1 1X01-CLEANBIG 5
7 330n C1 C805 1
8 220n C2 C805 1
9 160n C3 C805 1
10 500k R13 0805 1
11 68k R15 0805 1
12 100n C4 C805 1
13 10n C5 C805 1
14 ACTIVE BUZZER SG1 BUZZER-12MM-KIT 1
15 100 R16 0805 1
16 504WC D1,D2,D3 LED2-2.54-D5.0MM 3
17 0R R18,R19,R20 1206 3

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