HardLabs

Air quality sensors

ma-rapp·air-quality-sensors·electronics/airquality_sensor.kicad_pcb

Air quality sensors PCB layout, top view — open source AVR/Arduino board by ma-rapp

About the Air quality sensors PCB

Air quality sensors is an open source AVR/Arduino PCB design by ma-rapp, published on GitHub under the MIT license. It is a 2-layer board measuring 55 × 46 mm, with 11 components from 7 distinct parts.

Its main chip is the Arduino_Nano_ESP32_Socket, from the AVR/Arduino family. Other key parts include the AM2302. By type, the board carries 5 resistors, 2 ICs, 1 module, 1 jumper, 1 switch and 1 capacitor.

It belongs with the sensors designs in this gallery.

From the project

This is an air quality sensor with Arduino Nano ESP32, DHT22 temperature and humidity sensor, and MH-Z19C CO₂ sensor. See hobby.rapp-martin.de/projects/air-quality-dashboards/ for a description.

This is an air quality sensor with Arduino Nano ESP32, DHT22 temperature and humidity sensor, and MH-Z19C CO₂ sensor. See hobby.rapp-martin.de/projects/air-quality-dashboards/ for a description.

The electronics folder contains a KiCAD project including schematic and PCB design.

The software folder contains an Arduino project. Following adjustments are required: set WiFI SSID and password, set URL of the InfluxDB server, and * set InfluxDB token.

Main components on the Air quality sensors

AM2302Arduino_Nano_ESP32_Socket

Air quality sensors bill of materials (BOM)

11 components, 7 distinct parts.

QtyPartRefs
1
AM2302
U1
1
~
U3
1
Arduino_Nano_ESP32_Socket
A1
1
Jumper_2_Bridged
JP1
1
SW_DIP_x03
SW1
1
22u
C1
5
10k
R1, R2, R3, R4, R5

Air quality sensors design files

The KiCad project lives in the ma-rapp/air-quality-sensors repository on GitHub; these links point at the commit this page was built from.

Air quality sensors: common questions

What microcontroller does the Air quality sensors use?

The Air quality sensors is built around the Arduino_Nano_ESP32_Socket, from the AVR/Arduino family.

How big is the Air quality sensors PCB?

The Air quality sensors measures 55 × 46 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Air quality sensors?

11 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the Air quality sensors design files?

From the ma-rapp/air-quality-sensors repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Air quality sensors design in my own project?

Yes, under the terms of its MIT license, which ma-rapp chose for the repository.

Can I test firmware for the Air quality sensors 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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