Dragonkitty’s Dragon Dinghy — The Ultimate I/O Sailmate for Your 3D Printer
Smooth sailing for sensors, fans, and RGBs alike.
The Dragon Dinghy is a rugged and versatile I/O expansion board designed to supercharge your 3D printer’s thermal management, fan control, and lighting with seamless Klipper integration. Whether you’re upgrading a custom build or enhancing a multi-extruder beast, this compact powerhouse gives you the inputs and outputs you didn’t know you needed.
Key Specifications
✓ Thermistor Inputs (9 total)
- 5 inputs for 100k NTC thermistors (e.g. Generic 3950, ATC Semitec)
- 4 inputs optimized for PT1000 sensors
- All protected against accidental shorts up to 24V
✓ Fan Outputs (4 total)
- 2x 3-pin fan connectors, up to 1A each (optional: Tach support)
- 2x 4-pin fan connectors, up to 2A each (GND-switched PWM & optional Tach support)
- Supports 5V, 12V, or 24V fans natively
✓ RGB Lighting (4 channels)
- Compatible with WS2812B, SK6812, Neopixel strips
- Onboard SK6812 diagnostic RGB LED
- Up to 2A shared across all RGB ports and 5V rail
✓ Connectivity & Power
- 2x I²C ports for expansion modules (0.2A max)
- Dual integrated DC-DC converters (12V 2A & 5V 2A)
- USB or CAN interface—doubles as a USB-to-CAN bridge
- Raspberry Pi-compatible mounting pattern
Engineered for the Maker’s Workflow
- Pinouts and Klipper config hints printed directly on the PCB
- Diagnostic LEDs for fans, firmware mode, and voltage status
- Reverse polarity protection on main input
- Designed to keep working—even if you accidentally spike a thermistor input with 24V
The Dragon Dinghy doesn’t just float—it flies under pressure. Perfect for high-end builds demanding rock-solid expandability, thermal control, and glorious RGB feedback. Set sail into better printing.
More information here
