While the Panda Breath is physically compatible with the Snapmaker U1, the "out-of-the-box" firmware integration is effectively non-existent, limited primarily to basic manual toggles. Furthermore, the official manual references 4x M3x14mm self-tapping screws for installation that are notably absent from the retail packaging. his creates the distinct impression that Snapmaker U1 "compatibility" was a last-minute addition intended to capitalize on the machine's launch hype rather than a meaningful integration.
Because the Snapmaker U1's Klipper implementation is locked down (unless you root the machine), direct integration is a challenge. This script solves that by acting as an external API Bridge. It leverages the undocumented Panda Breath API to sync the heater with Moonraker metadata.
Deployment: Designed to run on any "always-on" device (NAS, Raspberry Pi, or local PC) connected to the same network as the printer and Panda Breath.
- Filament-Aware Heating: Automatically detects the filament type from Moonraker metadata and sets the chamber temperature based on a configurable map.
- Real-Time Monitoring: Dual-syncs with Klipper (via HTTP) and Panda Breath (via WebSockets) to display a live status dashboard.
- Intelligent Overshoot Protection: Pauses heating if the chamber exceeds the target and resumes once it cools down to a specific threshold.
- Hard Safety Cutoff: Immediately shuts down the heater if the chamber reaches a critical temperature limit (default 75°C).
- Graceful Shutdown: Upon script termination (Ctrl+C), it sends a 3-attempt safety handshake to ensure the Panda Breath is turned off and returned to Auto mode.
All settings are located at the top of the script for easy modification:
| Parameter | Description | Default |
|---|---|---|
PRINTER_IP |
IP address of your Snapmaker U1/Klipper instance | 192.168.1.1 |
PANDA_IP |
IP address of your Panda Breath unit | 192.168.1.2 |
DEBUG |
Enables verbose raw JSON logs for troubleshooting | False |
LOG_INFO |
Enables the formatted dashboard and status updates | True |
| Parameter | Description | Default |
|---|---|---|
FILAMENT_TEMP_MAP |
Map of filament strings to target chamber °C (can be extended with additional filament types) | PLA: 0, PETG: 40, REST: 60 |
TEMP_OVERSHOOT_BUFFER |
Degrees above target before heater is forced OFF | 2 |
TEMP_OVERSHOOT_RESUME |
Degrees below target before heating resumes | 2 |
ABSOLUTE_SAFETY_LIMIT |
The "Panic" temperature to kill all heat | 75.0 |
The script queries the Moonraker API for the current G-code file's metadata. It specifically looks for the filament_type attribute (e.g., PETG;PLA). If multiple extruders are used, it identifies the first active tool (target > 0) to determine the target chamber temperature.
While running, the script provides a clean console interface showing:
- Snapmaker U1 Status: Active file name, tool temperatures, and bed temperature.
- Panda Breath Status: Power state, internal sensor readings, and manual target temperature.
- Logic Status: Indicates if "Overshoot" protection is active or if the "Safety Cutoff" has been triggered.
The script is designed to fail-safe. If you terminate the script:
- It attempts to set the target temperature to 0°C.
- It attempts to switch the Panda Breath back to Auto Mode.
- It attempts to Power Off the heating unit.
Important
Each shutdown step is retried 3 times with a confirmation check to ensure the hardware received the command.
- Python 3.8+
websocketsrequests
Install dependencies via pip:
pip install websockets requestsSimply run the script on a device in the same network as your printer and Panda Breath:
python chamber_control.pyExample script output:
=================================================================
[00:47:50] INITIALIZING CHAMBER CONTROL
Settings:
Snapmaker U1 IP: 192.168.1.1
Panda Breath IP: 192.168.1.2
Overshoot Limits: [-2°C,+2°C]
Safety Cutoff: 75.0°C
=================================================================
[00:47:50] Controller Active. Monitoring Klipper [K] and Panda [P].
[00:47:50] [INFO] Current Panda Breath Status:
=======================================================
Power status: OFF
Mode: Auto
Target temp.: 0°C
=======================================================
[00:47:51] [INFO] Current Printer Status:
=======================================================
SNAPMAKER U1 - Active print...
File: Random_Print_PETG_1h3m.gcode
=======================================================
[ACTIVE] Tool 0: 230.0°C / 230°C | Filament: PETG
Tool 1: 32.0°C / 0°C | Filament: TPU
Tool 2: 33.0°C / 0°C | Filament: PLA
Tool 3: 34.0°C / 0°C | Filament: PLA
-------------------------------------------------------
Bed: 80.0°C | Chamber: 38.0°C
-------------------------------------------------------
[00:47:51] [EVENT] Detected Active Job (Random_Print_PETG_1h3m.gcode) | Primary Filament: PETG -> Panda Target: 40°C
[00:47:51] Temp. Status | Chamber Current: [K]38.0°C/[P]32.0°C | Chamber Target: [P]0°C | Bed Current/Target: [K]80.0°C/80°C | Overshoot: false | Safety Cutoff: false
[00:48:01] Temp. Status | Chamber Current: [K]38.0°C/[P]32.0°C | Chamber Target: [P]0°C | Bed Current/Target: [K]80.0°C/80°C | Overshoot: false | Safety Cutoff: false
[00:48:02] [INFO] Current Panda Breath Status:
=======================================================
Power status: ON
Mode: Manual
Target temp.: 40°C
=======================================================
[00:48:04] Temp. Status | Chamber Current: [K]38.0°C/[P]32.0°C | Chamber Target: [P]40°C | Bed Current/Target: [K]80.0°C/80°C | Overshoot: false | Safety Cutoff: false
[00:48:20] Temp. Status | Chamber Current: [K]38.0°C/[P]33.0°C | Chamber Target: [P]40°C | Bed Current/Target: [K]80.0°C/80°C | Overshoot: false | Safety Cutoff: falseDisclaimer: Always monitor your printer. Incorrect temperature settings for your specific enclosure or filament can cause hardware damage or fire hazards. Use at your own risk.