Water level indicator
About the Water level indicator PCB
Water level indicator is an open source PCB design by JKCadilo14-CpE, published on GitHub under the MIT license. It is a 2-layer board measuring 101.6 × 71.1 mm, with 18 components from 7 distinct parts.
By type, the board carries 7 resistors, 4 transistors, 3 connectors, 3 diodes and 1 buzzer.
From the project
Collection of electronic circuits I designed, tested, and documented using KiCad
A beginner-friendly transistor-based water level indicator project using conductive sensing probes, BC547 transistor stages, LED indicators, and a buzzer.
This project demonstrates a multi-stage water level indicator concept. A conductive liquid bridges sensing probes, allowing the transistor stages to respond, LEDs to indicate the detected level, and the buzzer to provide an audible alert.
Water level indicator bill of materials (BOM)
18 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | BC547 | TO-92_Inline | Q1, Q2, Q3, Q4 |
| 1 | out | TerminalBlock_Phoenix_MKDS-1,5-3-5.08_1x03_P5.08mm_Horizontal | J1 |
| 1 | out | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J2 |
| 1 | input | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J3 |
| 1 | Buzzer | Buzzer_15x7.5RM7.6 | BZ1 |
| 3 | LED | LED_D3.0mm | D1, D2, D3 |
| 7 | 100 ohms | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7 |
Water level indicator design files
The KiCad project lives in the JKCadilo14-CpE/DIY-Circuits repository on GitHub; these links point at the commit this page was built from.
Water level indicator: common questions
How big is the Water level indicator PCB?
The Water level indicator measures 101.6 × 71.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Water level indicator?
18 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the Water level indicator design files?
From the JKCadilo14-CpE/DIY-Circuits repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Water level indicator design in my own project?
Yes, under the terms of its MIT license, which JKCadilo14-CpE chose for the repository.
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