HardLabs

WaterSensor

mgamota2·PicoW·Water Sensor/WaterSensor/WaterSensor.kicad_pcb

WaterSensor PCB layout, top view — open source RP2040/RP2350 board by mgamota2

About the WaterSensor PCB

WaterSensor is an open source RP2040/RP2350 PCB design by mgamota2, published on GitHub. It is a 2-layer board measuring 85 × 54 mm, with 12 components from 10 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. By type, the board carries 7 resistors, 1 IC, 1 transistor and 1 LED.

From the project

main.py : Reads ADC values to determine if there is a leak/low battery

main.py : Reads ADC values to determine if there is a leak/low battery

umail.py : 3rd party library used to send email alert

The WaterSensorTraces directory contains the KiCAD project files for the sensor itself

Main components on the WaterSensor

Pico

WaterSensor bill of materials (BOM)

12 components, 10 distinct parts.

QtyPartRefs
1
Pico
U1
1
Q_NPN_BCE
Q1
1
CEM-1205-IC
111
1
47k
RV1
1
LED
Power2
1
1k
R1
3
220
R2, R6, R7
1
47
R3
1
30k
R4
1
10k
R5

WaterSensor design files

The KiCad project lives in the mgamota2/PicoW repository on GitHub; these links point at the commit this page was built from.

WaterSensor: common questions

What microcontroller does the WaterSensor use?

The WaterSensor is built around the Pico, from the RP2040/RP2350 family.

How big is the WaterSensor PCB?

The WaterSensor measures 85 × 54 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the WaterSensor?

12 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the WaterSensor design files?

From the mgamota2/PicoW repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the WaterSensor design in my own project?

The repository has no license, so all rights stay with mgamota2. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the WaterSensor without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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