We are continuously updating our open hardware / open source air quality monitor kits and as a results have different versions of the built instructions. The version you are having is written on the PCBs. Please check with the table below and then click on the link to the built instruction that applies to your kit.
Additionally, you can download all source files for the monitors on this page. All builds are licensed under CC BY-SA 4.0. Please ensure proper attribution.
In case you have questions or a problem during the assembly, the best and fastest way is to visit our forum.
Firmware Repositories
The firmware for the DIY PRO / ONE and Open Air Models is a combined version and is available on the AirGradient Arduino GitHub. Please open issues there for bugs or feature requests.
The firmware for the Open Air Max Model is also available on our GitHub repository called openair-max. Please open issues there for bugs or feature requests.
AirGradient ONE Indoor Monitor
| Version | Image of PCB / Files | Main Improvements / Changes | Link to Instructions | Arduino Sketch Name |
|---|---|---|---|---|
| I-9PSL Model |
black or blue PCB KiCad files main PCB Gerber file main PCB KiCad files LED bar Gerber files LED bar SGP41 Module SHT40 Module Enclosure STL Clip-On Stand STL |
Complete new design. ESP32-C3-Mini, RGB LED bar, hardware watchdog | build instructions | OneOpenAir.ino |
AirGradient Open Air Outdoor Monitor
| Version | Image of PCB / Files | Link to Instructions | Arduino Sketch Name |
|---|---|---|---|
| O-1PST Model |
KiCad files SGP41 Module CO2 Module STL Files |
build instructions | OneOpenAir.ino |
AirGradient Open Air Max Professional Outdoor Monitor
| Version | Image of PCB / Files | Link to Instructions | Firmware Code |
|---|---|---|---|
| O-M-1PPST-CE-S Model |
KiCad file main board KiCad file cellular card SGP41 Module SHT40 Module CO2 Module STL Files |
N/A. Only available fully assembled | GitHub openair-max |
Old Designs (no longer maintained)
| Version | Image of PCB / Files | Main Improvements / Changes | Link to Instructions | Arduino Sketch Name |
|---|---|---|---|---|
| DIY Basic 4.0 |
Gerber files STL Files |
Switched to shorter cross-over cable for PM. Made T/RH sensor slot compatible with AG module | standard version | BASIC.ino |
| 4.2 |
black or green PCB [Gerber files](/documents//gerber/gerber_diy_pro_v42.zip) [KiCad files](/documents/gerber/kicad-ag-diy-pro_V4.2.zip) [Enclosure STL](/documents/diy-pro/diy_pro_3d.zip) [Clip-On Stand STL](/documents/diy-pro/airgradient-stand-stl.zip) |
Improved tracing / ground plane, removed D1 shield, change in button connection, switch to cross over cable for PMS | [standard version](../diy-pro-v42/) / [presoldered version](../diy-pro-presoldered-v42/) | [DiyProIndoorV4_2.ino](https://github.com/airgradienthq/arduino/blob/master/examples/DiyProIndoorV4_2/DiyProIndoorV4_2.ino) |
| DIY Pro 3.7 |
black or green PCB [Gerber files](/documents/gerber/gerber_diy_pro_v37.zip) [Enclosure STL](/documents/diy-pro/diy_pro_3d.zip) [Clip-On Stand STL](/documents/diy-pro/airgradient-stand-stl.zip) |
Push button for configuration, rounded corners | [standard version](../diy-pro-v37/) / [presoldered version](../diy-pro-presoldered-v37/) | Compatible with [DiyProIndoorV3_3.ino](https://github.com/airgradienthq/arduino/blob/master/examples/DiyProIndoorV3_3/DiyProIndoorV3_3.ino) but no push button functionality |
| DIY Pro 3.3 |
black or green PCB [Gerber files](/documents/gerber/gerber_diy_pro.zip) [Enclosure STL](/documents/diy-pro/diy_pro_3d.zip) [Clip-On Stand STL](/documents/diy-pro/airgradient-stand-stl.zip) |
[standard version](../diy-pro/) / [presoldered version](../diy-pro-presoldered/) | [DiyProIndoorV3_3.ino](https://github.com/airgradienthq/arduino/blob/master/examples/DiyProIndoorV3_3/DiyProIndoorV3_3.ino) |