References

AirGradient provides several resources for DIY support and customization.

• DIY Pro 4.2 build instructions
• DIY Pro Presoldered 4.2 build instructions
• AirGradient PCB and 3D Printer files
• AirGradient Example 4.2 sketch

Others

There are several forks of the original AirGradient arduino repo that add alternative capabilities that I used for reference.

• JHadley1406 / aigradient_arduino
• hjburke / airgradient-mqtt
• nsbk / airgradient_mqtt
• agileek / AirGradientHomeAssistant
• geerlingguy / airgradient-prometheus
• Jeff Geerling - Monitoring my home's air quaity (CO2, PM2.5, Temp/Humidity) with AirGradient's DIY sensor