Build instructions — DIY V9 Presoldered

AirGradient ONE Indoor Air Quality Monitor Build Instructions

Professional and highly accurate air quality monitor built measuring PM2.5, CO2, TVOCs, NOX, temperature and humidity. Board allows a lot of extensibility for other sensors e.g. barometric pressure.

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Build instructions — Open Air Kit

AirGradient Open Air Outdoor Air Quality Monitor Build Instructions

Professional and highly accurate outdoor air quality monitor built measuring PM1, PM2.5, PM10, CO2, TVOCs, NOX, temperature and humidity. Fully weatherproof enclosure.

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AirGradient Open Air Max Manual

The Open Air Max Manual allows you to set up your Max monitor in minutes. It also offers insights into more advanced aspects of the device, allowing you to configure and use it exactly how you want.

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Compliance of Sensirion’s VOC Sensors with Building Standards

The AirGradient air quality monitors AirGradient ONE and AirGradient Open Air contain the Sensirion SGP41 TVOC/NOx sensor module.

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TVOC on the AirGradient DIY Sensor

**IMPORTANT** **We do no longer recommend to use the SGP30 on the AirGradient board as the removal of the pull up resistors is difficult and some people still experienced issues.

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The AirGradient DIY Sensor Wall Mount

We also developed a wall mount that fits to our sensor enclosure and snaps into its vents.

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The AirGradient DIY Sensor

Since AirGradient was born out of a parent's project wanting to improve the air quality in their children's school, supporting awareness and education around the topic of air quality was always a strong passion for us.

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Somerville Indoor Air Quality Monitor

Step 1 Plug in the air quality monitor Step 2 All current air quality information is on the screen on the monitor.

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Account Deletion

You have the right to request deletion of your account and personal data at any time.

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Air Quality Parameters

Understanding what each AirGradient sensor measures is essential for accurately interpreting your air quality data from the dashboard, exports, or API. CO2, PM, TVOC

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AirGradient DIY Display

When we launched our indoor classroom monitoring with our professional sensors, one of the first feature request from teachers was to have a small display that would show the indoor and outdoor air quality.

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AirGradient Models

Here we want to give an overview of current and out-of-production AirGradient monitor models.

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Calibration Algorithms

The accuracy of an air quality monitor is impacted by a variety of internal and external factors, for example: - Enclosure: The ventilation and internal placement of sensor modules can greatly impact their accuracy.

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Data Ownership and Sharing

We strongly recommend that you fully understand data ownership terms before buying an air quality monitor, as some of them can be extremely restrictive.

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Enhance the Accuracy of the PMS Sensors

Newer batches of the Plantower PMS5003 sensors that -although working completely correctly and within their specs- can be made more accurate in lower concentration ranges.

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IT Security Policy for Deployment of AirGradient Monitors

**1. Introduction** This policy outlines the security considerations and procedures for deploying AirGradient air quality monitors (specifically models like the AirGradient ONE...

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The AirGradient Builds Overview

Build your own open-source, open-hardware air quality monitor measuring PM2.5, CO2, temperature and humidity.

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AirGradient ONE Installation Instructions

Learn how to install your AirGradient ONE air quality monitor

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AirGradient Open Air Installation Instructions

Learn how to install your AirGradient Open Air air quality monitor

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Online Debug

This page helps in reading out data directly from the AirGradient monitor.

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Reading Temperature and Humidity from Plantower PMS5003T

We use the PMS5003T version for our outdoor monitor Open Air which includes an integrated temperature and humidity sensor.

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How to connect the Monitors to the AirGradient Dashboard

Connecting the monitor to the AirGradient Dashboard is a two-step process.

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Embedding Air Quality Displays on Public Screens & Websites

On the AirGradient dashboard we allow users to create custom displays and widgets that can be used to show air quality information on almost any smart device (any device with a browser).

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Understanding the LED Indicators on Your AirGradient ONE

The AirGradient ONE has a row of 11 LEDs behind the plastic at the top of the device.

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The AirGradient DIY BASIC Sensor Enclosure

Just a quick shout out that we have 3D printer files to print your own enclosure.

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Firmwares

AirGradient ONE (I-9PSL), Open Air (O-1PST) and Open Air Max (O-M-1PPST...) Firmware Versions

Please note that these firmware versions do not support the D1 mini (ESP8266) based models DIY Pro or Basic kit but we currently work on an update that will bring as many as possible of the new features to the D1 mini.

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Certified Firmware for AirGradient ONE Model I-9PSL

Please note This is the AirGradient certified firmware blob which is closed source and has fewer features than the open-source firmware available here. Use this version for official purposes, e.g. co-location tests. This firmware is only compatible with the Version 9 of the AirGradient ONE.

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Factory Flashing

Firmware image for flashing of new boards in the factory.

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Special Firmware Versions

Below are custom firmwares for very specific applications and not for general use.

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Old Build Instructions

The AirGradient ONE Offline Firmware for Model I-9PSL

Pre-soldered version of the AirGradient ONE air quality monitor. Replaced by newer instructions.

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The AirGradient DIY Outdoor Pilot Program

Open source outdoor air quality monitor. Replaced by newer instructions.

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AirGradient Open Air Outdoor Air Quality Monitor Technical Documentation (PCB Version 1.1)

Technical Documentation of the AirGradient Open Air Outdoor Air Quality Monitor. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Basic Version PCB Version < 3.0)

Build your own open-source, open-hardware air quality monitor measuring PM2.5, CO2, temperature and humidity. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Basic Version PCB Version 3.0)

Build your own open-source, open-hardware air quality monitor measuring PM2.5, CO2, temperature and humidity. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Basic Version PCB Version 4.0+)

Build your own open-source, open-hardware air quality monitor measuring PM2.5, CO2, temperature and humidity. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Pro Presoldered-Version, PCB Version < 3.7)

Pre-soldered version of the AirGradient DIY Pro air quality monitor. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Pro Presoldered-Version, PCB Version 3.7)

Pre-soldered version of the AirGradient DIY Pro air quality monitor. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Pro Presoldered-Version, PCB Version 4.2)

Pre-soldered version of the AirGradient DIY Pro air quality monitor. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Pro Version PCB Version < 3.7)

Larger and more extensible air quality monitor open-source instructions. Also available with professional enclosure and also as pre-soldered kit in our store. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Pro Version PCB Version 3.7)

Larger and more extensible air quality monitor open-source instructions. Also available with professional enclosure and also as pre-soldered kit in our store. Replaced by newer instructions.

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The AirGradient DIY Air Quality Sensor (Pro Version PCB Version 4.2)

Larger and more extensible air quality monitor open-source instructions. Also available with professional enclosure and also as pre-soldered kit in our store. Replaced by newer instructions.

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The AirGradient DIY Outdoor Air Quality Monitor

Open source outdoor air quality monitor. Replaced by newer instructions.

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The AirGradient Open Air Outdoor Air Quality Monitor (O-1PST Kit, PCB Version 1.3)

Kit version of the AirGradient Open Air Outdoor Air Quality Monitor.

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The AirGradient Open Air Outdoor Air Quality Monitor (Presoldered-Version, PCB Version 1.1)

Pre-soldered version of the AirGradient Open Air Outdoor Air Quality Monitor. Replaced by newer instructions.

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AirGradient DIY Pro Kit Built Instructions

These instructions are for the people who ordered our first batch of the new DIY kit with the professional enclsosure. Replaced by newer instructions.

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Install the Arduino Software for the ESP32-C3

For the new AirGradient monitors we use the **ESP32-C3-MINI** microcontroller. Replaced by newer instructions.

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Install the Arduino Software and D1 Mini

For all the old versions of the AirGradient build instructions the **Wemos D1 Mini** microcontroller was used. Replaced by newer instructions.

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