pi-pico-printer-board

features

• Klipper compatible
• Uses Raspberry Pi Pico (RP2040)
• High reliability Weidmüller push-in connectors for all inputs and outputs
• 20A max and 7.5A max separately fused heater outputs
• 4x 3A max general purpose PWM outputs, individually configurable for 12V or 24V power, capable of driving inductive loads
• 3x thermistor inputs with 2.4Kohm pull up resistors
• 4x endstop inputs with one configurable for 5V or 12V operation for Z-probe
• 4x motor driver sockets
• Onboard 12V 3A and 5V 3A buck converters for powering accessories including Raspberry Pi
• Compatible with both 12V and 24V systems; components rated for 28V
• Compatible with both TMC2209 and A4988 motor drivers, and possibly others
• ESD and short-to-Vin protection on all microcontroller inputs
• Motor driver ESD and coil overvoltage protection
• Indicator LEDs for all power rails and outputs
• Alternatively supports 2.54mm pitch (Molex SL), or 2.5mm pitch (JST SM) headers for all inputs and outputs
• Labeled PCB for ease of setup and tinkering
• Open source PCB design

design

Schematic as PDF

Sample Klipper Configuration File

BOM (Excel)

license

This project is released under the CERN Open Hardware Licence Version 2 - Weakly Reciprocal (CERN-OHL-W V2).