BigTreeTech (Biqu) is expanding its “Panda” lineup of accessories with the Panda Sense Pro, an $89.99 USB-powered air quality monitor aimed at keeping tabs on the emissions generated during 3D printing.
While the Panda series is traditionally marketed as a companion ecosystem for Bambu Lab 3D printers, the Sense Pro isn’t locked into a walled garden. It uses MQTT to integrate directly with Home Assistant networks for custom automations. It can also be hooked up to a Moonraker-enabled web interface, making it fully compatible with Klipper-based 3D printers.
Some Assembly Required
True to the maker spirit, the Sense Pro ships as a DIY kit. For $89.99, you receive:
- A 3.5-inch color TFT display
- The Sense Pro mainboard
- An external temperature sensor
- A USB power cable and assembly hardware
- A signature BigTreeTech rubber ducky
You will need to 3D print the enclosure yourself. BigTreeTech provides the STL files via GitHub, allowing you to customize the case’s color and material to match your setup.
The 8-in-1 Sensor Array
The Panda Sense Pro is marketed as an 8-in-1 system. It relies on four distinct hardware sensors—a laser particle sensor, an NDIR CO₂ sensor, an electrochemical formaldehyde sensor, and a temperature/humidity sensor—to output eight specific metrics:
| Metric | What It Measures | 3D Printing Context |
| PM2.5 | Particulates up to 2.5 micrometers | Tracks fine emissions from melting filament. |
| PM10 | Particulates up to 10 micrometers | Tracks larger airborne dust or mechanical debris from printer wear. |
| Formaldehyde | Toxic volatile organic compounds | Detects specific toxic off-gassing from certain plastics. |
| CO₂ | Carbon dioxide levels | General air staleness in the printing room. |
| eTVOC | Estimated Total Volatile Organic Compounds | Derived value: A broad estimate of VOCs in the air (can be triggered by harmless things like peeling citrus, but useful in an isolated print room). |
| AQI | Air Quality Index | Derived value: An aggregated score of overall air health. |
| Temperature | Ambient heat | Room or enclosure temperature tracking. |
| Humidity | Ambient moisture | Crucial for tracking environments where filament might absorb moisture. |
Limitations and Safety
BigTreeTech is transparent about the physical limits of the Sense Pro: it can only reliably detect particles down to a specific size. Studies show that 3D printing routinely generates ultra-fine particles (UFPs)—particles so small they can cross directly into the bloodstream.
The Sense Pro cannot detect these ultra-fine particles, but to be fair, neither can any other consumer-grade home air monitor currently on the market.
Because of this, the monitor is best used as a complementary safety tool rather than a definitive shield. It pairs logically with last year’s Panda Breath (an in-chamber HEPA filtration device). Even with monitoring, running your 3D printer in a ventilated enclosure or with active air filtration remains the best practice for safe indoor printing.
