Upgrade: Streamline your extruder wiring and add robust temperature support with this compact CAN Bus extruder breakout board designed for Klipper setups. Ideal for DIY hotend and multi-extruder installations, it supports PT100/PT1000 sensors, onboard motor drivers, USB-C connectivity, and reliable protection features for stable 3D printing performance.

Specifications:

• Item Type: Extruder Breakout Board (Motherboard)
• Model Number: EBB36 CAN
• Microprocessor: ARM Cortex-M0 STM32F072C8T6, 48 MHz
• External Dimensions: 51.5 mm x 37 mm (2.03 in x 1.46 in)
• Mounting / Installation: Hole spacing 43.85 mm (1.73 in), M3 screw holes x2
• Input Voltage: DC 12–24 V, up to 6 A
• Logic Voltage: DC 3.3 V
• Heating Interface: Heating rod (E0), maximum output current 5 A
• Onboard Sensor: ADXL345 (accelerometer)
• Fan Interfaces: Two fan ports (FAN0, FAN1) — max 1 A continuous, 1.5 A peak
• Expansion Interfaces: Endstop, I2C, Probe, RGB, PT100/PT1000, USB, CAN
• Temperature Sensor Options: 1 channel 100K NTC or PT1000 (TH0), plus 1 channel PT100/PT1000; onboard MAX31865 supports 2-wire or 4-wire PT100/PT1000
• Motor Driver: Onboard TMC2209
• Driver Communication Mode: UART
• Stepper Motor Interface: EM (36-stepper support)
• USB Communication: USB Type-C (with ESD protection)
• 5V Output: DC 5 V maximum output current 1 A
• Protection & Features: Thermistor protection circuit, anti-flyback diodes on heater/fan ports, anti-reverse power protection, ESD protection on USB, selectable CAN terminal resistor, jumper-selectable PT100 pull-up resistors
• Firmware: Supports Klipper (firmware updates via DFU/USB)
• Compatibility: Designed as a nozzle/extruder adapter board for CAN bus-enabled 3D printer setups and Klipper expansion devices; works with USB-to-CAN modules for Raspberry Pi/CAN networks

Notes: Ensure correct polarity when connecting power (12/24 V and GND must not be reversed). When using CAN communication, set the terminal resistor jumper (120 Ω) on the node that acts as the CAN bus terminator.

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