HardLabs

Toilet monitoring system

alepnabil·toilet_monitoring_system·toilet_monitoring_unit/toilet_monitoring_unit.kicad_pcb

Toilet monitoring system PCB layout, top view — open source AVR/Arduino board by alepnabil

About the Toilet monitoring system PCB

Toilet monitoring system is an open source AVR/Arduino PCB design by alepnabil, published on GitHub. It is a 2-layer board measuring 81.5 × 128.8 mm, with 8 components from 7 distinct parts.

Its main chip is the Arduino_Nano_Every, from the AVR/Arduino family. Other key parts include the HC-SR04. By type, the board carries 3 battery holders, 2 connectors, 1 IC, 1 module and 1 switch.

It belongs with the sensors designs in this gallery.

From the project

This system is a custom IoT monitoring solution built on a 2-layer PCB.

This system is a custom IoT monitoring solution built on a 2-layer PCB.

Hardware & Sensing Core The core hardware is centered around an Arduino Nano, which serves as the main microcontroller.

Air Quality: The MQ-135 sensor continuously measures air quality, providing data crucial for cleanliness assessment.

Usage Tracking: The HC-SR04 ultrasonic sensor is employed to accurately count people, gathering real-time usage statistics.

Toilet monitoring system, from the project README
From the project README

Main components on the Toilet monitoring system

HC-SR04Arduino_Nano_Every

Toilet monitoring system bill of materials (BOM)

8 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
HC-SR04
U1
1
Arduino_Nano_Every
A1
1
MQ135
J1
1
HC-12
J3
2
Battery pack 3.7v
BT1, BT5
1
Battery pack 9V
BT4
1
Power switch
SW2

Toilet monitoring system design files

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

Toilet monitoring system: common questions

What microcontroller does the Toilet monitoring system use?

The Toilet monitoring system is built around the Arduino_Nano_Every, from the AVR/Arduino family.

How big is the Toilet monitoring system PCB?

The Toilet monitoring system measures 81.5 × 128.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Toilet monitoring system?

8 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Toilet monitoring system design files?

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

Can I use the Toilet monitoring system design in my own project?

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

Can I test firmware for the Toilet monitoring system without the hardware?

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

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