Integrates the BIQU Panda Breath smart chamber heater and air filter with Klipper on the Snapmaker U1.
The Panda Breath is a 300 W PTC chamber heater with HEPA/carbon air filtration and WiFi control. This firmware reverse-engineers its WebSocket API and exposes the device as a standard Klipper heater_generic, so slicer chamber temperature commands (M141/M191) work out of the box.
Installing and operating the Panda Breath significantly raises sustained operating temperatures inside the enclosure. This accelerates wear on electronics, motors, and other components beyond their rated conditions. Any damage attributable to elevated thermal stress is unlikely to be covered under warranty. Use at your own risk.
The U1 motherboard has insufficient thermal headroom for sustained elevated chamber temperatures. There are documented cases of motherboard overheating causing mid-print failures. The RK3562 main processor begins thermal throttling at 85 °C, degrading Klipper real-time performance and causing motion or communication errors.
Additional active cooling on the motherboard is required before using Panda Breath.
Printable cooling solutions available on MakerWorld:
See also: Quick overview on fan mods applied for Snapmaker U1 — community thread covering additional fan mod approaches (to be evaluated).
Enable via the Firmware Config web interface at http://<printer-ip>/firmware-config/ under Tweaks > Panda Breath Chamber Heater.
Two modes are available:
| Mode | Description |
|---|---|
| Auto (recommended) | Klipper heats the chamber to target, then hands off hold and cool-down to Panda native auto mode. Requires firmware v1.0.3+. |
| Manual (advanced) | Pure heater_generic control throughout. Legacy fallback; less safe if the device or network is lost during a print. |
During setup the web interface will ask for the Panda Breath IP address and will automatically bind the device to the printer.
After enabling, a config file is placed at:
/home/lava/printer_data/config/extended/klipper/panda_breath.cfg
To change the IP address or port, edit that file directly in Fluidd/Mainsail or via SSH:
[panda_breath]
host: 192.168.1.100
port: 80
Restart Klipper after saving.
Once enabled, the Panda Breath appears as a chamber heater in Fluidd/Mainsail. Use standard G-code commands to control it:
| Command | Effect |
|---|---|
M141 S45 |
Set chamber target to 45 °C |
M191 S45 |
Set chamber target to 45 °C and wait until reached |
M141 S0 |
Turn off chamber heating |
In your slicer, set the chamber temperature for the filament profile as usual — M141/M191 commands in start G-code are handled automatically.
Additional commands are available for direct device control:
| Command | Parameters | Description |
|---|---|---|
PANDA_BREATH_AUTO |
ENABLE=1/0 TARGET=<°C> |
Enable/disable Panda native auto mode |
PANDA_BREATH_DRY_RUN |
TARGET=<°C> DURATION=<min> |
Start native filament drying cycle |
PANDA_BREATH_DRY_STOP |
— | Stop active drying cycle |
Disable via Firmware Config > Tweaks > Panda Breath Chamber Heater > Disabled. The device is automatically unbound from the printer and the configuration file is removed.
Klipper shows heater error / verify_heater failure
The Panda Breath is a slow external heater with coarse 1 °C temperature reporting. The default verify_heater configuration uses extended gain check and error windows to avoid false positives. If errors still occur, check WiFi connectivity between the printer and the Panda Breath device.
Device not reachable at PandaBreath.local
mDNS resolution can be unreliable. Set a static DHCP lease and use the IP address directly in panda_breath.cfg.
Print fails or printer reboots during long high-temperature prints
This is a symptom of motherboard overheating. See Motherboard Overheating for cooling solutions.
panda_breath.cfg