Air Quality Monitor - SEN66 + ESP32-C6
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Description
A compact two-piece enclosure for the Sensirion SEN6x environmental sensor paired with a Seeed Studio XIAO ESP32-C6. Designed to be clean, minimal, and functional — no screws, no hardware, just print and assemble.
What it monitors
Depending on which SEN6x sensor you use, this build can give you real-time readings for:
- PM1.0 / PM2.5 / PM4.0 / PM10 (particulate matter)
- CO₂ (ppm)
- Temperature & Humidity
- VOC Index
- NOx Index
When paired with ESPHome and Home Assistant, all sensors appear automatically via the ESPHome integration.
Design
The enclosure is split into two friction-fit halves. The SEN6x sits in one half with its fan intake aligned to a circular port on the front face. The XIAO ESP32-C6 lives in the other half, with a rectangular cutout exposing the USB-C port.
Everything is friction fit. To secure the XIAO in place, a small piece of double-sided tape works well — a dab of hot glue is also an option.
Bill of Materials
- Sensirion SEN6x environmental sensor node (SEN62, SEN63C, SEN65, SEN66, SEN68, or SEN69C)
- Seeed Studio XIAO ESP32-C6
- 4x jumper wires
- Double-sided tape or hot glue (for the XIAO)
- USB-C cable for power
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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