MKS-PI: Your Next Favorite Klipper Control Board

Struggling with Raspberry Pi shortages? Need a reliable, high-performance board for Klipper firmware? The MKS-PI microcomputer delivers everything 3D printing enthusiasts crave—without the hassle.

The global chip shortage has made Raspberry Pi boards elusive and expensive. Meanwhile, Klipper firmware revolutionizes 3D printing with unprecedented speed and precision, but requires a dedicated host computer. Enter MKS-PI—Makerbase's engineered solution that eliminates compatibility headaches, slashes setup time, and provides rock-stable performance for your Klipper-powered printer. This comprehensive guide reveals why thousands of makers are switching to this powerful alternative.

What Is MKS-PI and Why It's Revolutionizing Klipper 3D Printing

MKS-PI is a purpose-built microcomputer board engineered by Makerbase specifically to run Klipper firmware for 3D printers. Unlike generic single-board computers, this device arrives pre-configured with a complete Klipper ecosystem, eliminating the complex software compilation and configuration that typically consumes hours of valuable printing time.

The board features a powerful 4-core 64-bit System-on-Chip (SOC) paired with 1GB of DDR3 memory, providing ample processing power for real-time kinematic calculations that make Klipper so exceptional. Its hardware architecture mirrors the Raspberry Pi 3B form factor—complete with identical mounting holes and interface positioning—enabling seamless drop-in replacement for existing setups.

Makerbase, a veteran manufacturer of 3D printer components, recognized a critical market gap: while Klipper firmware offers superior print quality and web-based control, the Raspberry Pi supply chain crisis left makers stranded. Their solution leverages the Armbian desktop system—a robust Debian-based distribution optimized for ARM processors—pre-loaded with Klipper, Moonraker, and Fluidd interface. This turnkey approach means users skip the labyrinthine installation process and jump straight to printing.

The timing couldn't be better. As Klipper adoption accelerates across the maker community, with professional-grade features like input shaping, pressure advance, and multi-MCU support becoming standard expectations, the MKS-PI arrives as a cost-effective, readily available alternative that doesn't compromise on performance. Its DC12/24V power input ensures stable operation directly from your printer's power supply, eliminating the unreliable USB power issues that plague many Pi-based installations.

Key Features That Make MKS-PI Stand Out

1. High-Performance Quad-Core Processing

The 4-core 64-bit SOC delivers exceptional computational power for Klipper's demanding real-time operations. Unlike older single-core boards that struggle with complex G-code processing, the MKS-PI handles input shaping calculations, pressure advance algorithms, and multiple extruder kinematics simultaneously without breaking a sweat. The 1GB DDR3 memory provides sufficient headroom for running KlipperScreen, webcam streaming, and the web interface concurrently.

2. Stable DC Power Input

DC12/24V direct power supply represents a game-changing design decision. Traditional Raspberry Pi setups rely on micro-USB or USB-C power, which often introduces voltage instability causing random crashes mid-print. The MKS-PI taps directly into your printer's power supply, ensuring clean, stable voltage delivery that keeps your prints running reliably for days.

3. Comprehensive Display Support

Flexibility defines the MKS-PI's display architecture. The board supports both HDMI screens for high-resolution graphical interfaces and the dedicated PI-TS35 touchscreen for compact, integrated control panels. This dual-interface capability lets builders choose between a sleek, modern touchscreen setup or a budget-friendly HDMI monitor configuration.

4. Triple USB Interface Array

Three full-sized USB ports unlock unprecedented connectivity options. Connect your 3D printer mainboard via USB for high-speed communication, add a USB webcam for remote monitoring, attach a USB WiFi adapter for wireless networking, or plug in a keyboard and mouse for direct system configuration. This versatility eliminates the USB hub clutter that complicates many Pi installations.

5. Wired Ethernet Reliability

The onboard Ethernet port provides rock-solid network connectivity essential for remote printer management. While WiFi works for casual use, Ethernet ensures uninterrupted communication during long prints, firmware updates, and large file transfers—critical for professional printing operations.

6. Raspberry Pi 3B Compatibility

Physical compatibility with Raspberry Pi 3B mounting holes and interface positions means existing cases, brackets, and accessories work without modification. This thoughtful design consideration protects your investment in printer enclosures and mounting hardware.

7. Pre-Configured Armbian System

The Armbian desktop system comes pre-loaded with a complete Klipper stack. KlipperScreen support works out-of-the-box, providing a polished touchscreen interface. The system includes Fluidd as the default web interface, offering a modern, responsive alternative to OctoPrint with lower resource overhead.

Real-World Use Cases Where MKS-PI Excels

1. Budget-Conscious Klipper Conversions

Transforming an old Marlin-based printer to Klipper typically requires a $75+ Raspberry Pi 4. The MKS-PI delivers equivalent performance at a fraction of the cost, making high-speed printing accessible to hobbyists on tight budgets. The direct DC power input eliminates the need for separate power supplies, further reducing total project cost.

2. Multi-Printer Farm Deployments

Managing a print farm demands reliable, identical configurations across multiple machines. The MKS-PI's standardized image-based setup ensures every unit deploys identically. Burn the same TF card image to multiple boards, configure unique printer settings via Fluidd, and scale your farm without per-machine software compilation. The stable Ethernet connectivity prevents WiFi dropouts that could ruin batch production runs.

3. Portable and Exhibition Printing

Taking your printer to maker fairs or workshops requires compact, robust control systems. The MKS-PI's small footprint and DC power compatibility allow integration directly into the printer chassis. Connect a PI-TS35 screen for standalone operation without external monitors. The system's reliability ensures demonstration prints complete successfully without technical hiccups.

4. Upgrading from Underpowered Boards

Makers stuck on Raspberry Pi Zero or older Pi models experience sluggish web interfaces and dropped frames during timelapse recording. The MKS-PI's quad-core architecture and 1GB RAM provide the headroom needed for smooth KlipperScreen operation, 1080p webcam streaming, and concurrent G-code analysis without performance degradation.

5. Educational and Workshop Environments

Teaching Klipper firmware in classrooms requires repeatable, frustration-free setup processes. The MKS-PI's pre-configured image eliminates the complex Linux command-line work that intimidates beginners. Students simply burn an image, connect to the network, and start learning Klipper configuration—focusing on printing principles rather than system administration.

Step-by-Step Installation and Setup Guide

Hardware Requirements

Before starting, gather these components:

• TF memory card (minimum 8GB, 16GB recommended for logs and timelapses)
• TF card reader for your PC
• Windows PC (Mac/Linux works with alternative tools)
• Network connection: Ethernet cable or compatible USB WiFi adapter
• Type-C cable for serial console access
• DC 12V or 24V power supply (your printer's PSU works perfectly)

Software Preparation

1. Download the system image: Visit the official Google Drive folder at https://drive.google.com/drive/folders/1tTuSvF9OL2qtPXElau8YOXn2sWbdxa9e?usp=sharing and download the latest MKS-PI Armbian image.

2. Install balenaEtcher: Download version 1.5 or newer from https://www.balena.io/etcher/. This tool simplifies image flashing with its intuitive three-step process.

3. Install PuTTY: Grab this essential SSH/serial terminal from https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html for command-line access.

Flashing the System Image

Step 1: Format the TF Card Insert your TF card into the reader and format it to FAT32 using Windows Disk Management or SD Card Formatter. This ensures a clean slate for the new system.

Step 2: Launch balenaEtcher Open balenaEtcher and click "Flash from file" to select your downloaded MKS-PI image (extract the .zip file first to reveal the .img file).

Step 3: Select Target Click "Select target" and choose your TF card from the list. Double-check the drive letter to avoid overwriting your system drive.

Step 4: Start Flashing Click "Flash!" and wait for the process to complete. BalenaEtcher automatically validates the written data, ensuring a corruption-free installation. This takes 5-10 minutes depending on card speed.

Step 5: Power Up Eject the TF card safely, insert it into the MKS-PI's card slot, and apply 12V or 24V DC power. The board boots automatically—no power button needed.

Network Configuration

Ethernet Method (Recommended) Simply connect an Ethernet cable from your router to the MKS-PI. The system automatically obtains an IP address via DHCP. This is the most reliable connection method for permanent installations.

USB WiFi Adapter Method Insert a compatible USB WiFi adapter (RTL8188CUS or RTL8188EUS chipsets recommended) into any of the three USB ports. Avoid RTL8188GU adapters—they consume excessive CPU resources (up to 27% load in tests).

Configure WiFi using one of these methods:

Method A: TF Card Configuration (Headless) Before first boot, reinsert the TF card into your PC. Open the "Boot" drive and edit wpa_supplicant-wlan0.conf with Notepad++:

# Configure your WiFi credentials here
network={
    ssid="YOUR_WIFI_NAME"
    psk="YOUR_WIFI_PASSWORD"
    key_mgmt=WPA-PSK
}

Save the file, eject the card, and boot the MKS-PI. It connects automatically within 30 seconds.

Method B: Serial Console Configuration Connect the MKS-PI to your PC via Type-C cable. Open Device Manager to identify the COM port (typically COM3 or higher).

REAL Code Examples from the Repository

Example 1: Identifying Your Printer's USB Connection

After connecting your printer's mainboard via USB, you must identify the correct serial device path for Klipper configuration. The MKS-PI provides a reliable method to list all connected serial devices:

# List all USB serial devices by their unique hardware IDs
# This command shows persistent device names that don't change on reboot
ls /dev/serial/by-id/*

# Expected output example:
# /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0
# /dev/serial/by-id/usb-MKS_MKS_GEN_L_V1_0-if00

Explanation: The /dev/serial/by-id/ directory contains symbolic links with descriptive names based on each device's hardware ID. Unlike generic /dev/ttyUSB0 paths that can shift on reboot, these by-id paths remain constant. Copy the full path for your printer's board and paste it into your printer.cfg file's [mcu] section:

[mcu]
serial: /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0

This ensures Klipper always connects to the correct device, even if you add cameras or other USB peripherals later.

Example 2: Network Configuration via Serial Console

When headless WiFi setup fails, the serial console provides direct access. After connecting via PuTTY at 1500000 baud, use the NetworkManager Text User Interface:

# Launch the NetworkManager TUI for easy WiFi configuration
nmtui

Explanation: The nmtui command opens a graphical menu in your terminal. Navigate using arrow keys:

1. Select "Activate a connection"
2. Choose your WiFi network from the list
3. Enter your password when prompted
4. Press Enter to connect
5. Select "Back" and "Quit" to exit

This method works even if the wpa_supplicant file contains errors, providing a foolproof way to establish network connectivity.

Example 3: Retrieving Your MKS-PI's IP Address

Without a display, determining the board's IP address is crucial for accessing the Fluidd web interface. Use this command after logging in via PuTTY:

# Display all network interfaces and their IP addresses
ip a

# Filtered output showing only IPv4 addresses:
# ip -4 a show dev wlan0
# ip -4 a show dev eth0

Explanation: The ip a (short for ip address) command reveals network interface status. Look for the inet line under wlan0 (WiFi) or eth0 (Ethernet). The IP address appears as 192.168.1.xxx/24—copy the portion before the / (e.g., 192.168.1.100) into your browser to access Fluidd.

For scripted monitoring, use:

# Extract just the WiFi IP address for use in scripts
ip -4 addr show wlan0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}'

Example 4: Serial Console Connection Parameters

PuTTY configuration requires specific settings for MKS-PI's serial console. Here's the exact setup:

# Connection parameters for MKS-PI serial console
# Baud Rate: 1500000 (1.5 Mbps - extremely fast for responsive terminal)
# Data Bits: 8
# Stop Bits: 1
# Parity: None
# Flow Control: None
# COM Port: Check Windows Device Manager (e.g., COM3)

Explanation: The 1.5 Mbps baud rate is critical—standard 115200 baud won't work. In PuTTY:

1. Select "Serial" connection type
2. Enter your COM port (e.g., COM3)
3. Set Speed to 1500000
4. Under Connection > Serial, verify 8 data bits, 1 stop bit, no parity, no flow control
5. Click "Open"

If you see a blank window, press Enter to trigger the login prompt. Use credentials:

• Username: mks (or root for administrative access)
• Password: makerbase

Example 5: WiFi Configuration File Syntax

Editing the wpa_supplicant-wlan0.conf file directly requires proper syntax. Here's a complete, annotated example:

# MKS-PI WiFi Configuration File
# Location: /boot/wpa_supplicant-wlan0.conf (on PC before first boot)

# Country code for regulatory domain (US, CN, EU, etc.)
country=US

# Network configuration block - add multiple blocks for multiple networks
network={
    # WiFi network name (SSID) - use quotes for special characters
    ssid="MyHomeNetwork"
    
    # WiFi password - minimum 8 characters
    psk="SecurePassword123"
    
    # Encryption type - WPA-PSK for home networks
    key_mgmt=WPA-PSK
    
    # Priority (higher number = higher priority if multiple networks match)
    priority=10
}

# Example: Open network (no password)
# network={
#     ssid="GuestNetwork"
#     key_mgmt=NONE
# }

Explanation: This configuration uses wpa_supplicant, the industry-standard WiFi client for Linux. The country line is crucial—it sets regulatory limits for transmit power and available channels. Each network block defines one WiFi network. The priority parameter lets you configure fallback networks (e.g., home WiFi priority 10, mobile hotspot priority 5).

After editing, save the file in UTF-8 encoding (Notepad++ does this by default) to prevent syntax errors that would prevent WiFi connection.

Advanced Usage and Best Practices

Optimal WiFi Adapter Selection

Stick to RTL8188CUS (VID:PID 0bda:8176) or RTL8188EUS (VID:PID 0bda:8179) chipsets. These drivers are kernel-native, consuming minimal CPU. Tested adapters cost under $5 on AliExpress. Avoid RTL8188GU—its driver loads the CPU heavily, potentially affecting print quality during complex calculations.

Performance Optimization

• Disable unused services: systemctl disable bluetooth frees resources
• Enable ZRAM: The pre-configured image likely includes this, but verify with zramctl to ensure compressed swap is active
• Log rotation: Edit /etc/logrotate.conf to prevent log files from filling your TF card: set size 100M and rotate 4

Backup Strategy

Create a golden image after initial configuration:

# On your PC, use dd to clone your configured TF card
# Replace /dev/sdX with your card's device name
sudo dd if=/dev/sdX of=mks-pi-backup.img bs=4M status=progress

Store this backup safely. When your TF card eventually fails (they all do), restore it to a new card in minutes instead of reconfiguring from scratch.

Multi-Printer Management

For printer farms, assign static IPs via your router's DHCP reservation. Name each MKS-PI hostname uniquely (sudo hostnamectl set-hostname printer01) for easy identification in network scans and Fluidd's interface.

Thermal Management

The 4-core SOC can warm up during intensive operations. Ensure adequate ventilation in your printer enclosure. Monitor temperatures with:

# Check CPU temperature
cat /sys/class/thermal/thermal_zone0/temp
# Divide by 1000 to get Celsius

If temps exceed 70°C, add a small heatsink or reposition the board for better airflow.

MKS-PI vs. Alternatives: Why Choose This Board?

Key Advantages:

• Turnkey Operation: The pre-flashed Armbian image with Klipper, Moonraker, and Fluidd saves 3-4 hours of command-line setup
• Power Stability: Direct printer PSU connection eliminates crashes from inadequate USB power supplies
• Cost-Effectiveness: At nearly half the price of a Pi 3B, it delivers equivalent performance for Klipper's specific needs
• Form Factor Compatibility: Direct replacement for Pi 3B mounts means no redesigning enclosures

When to Choose Alternatives:

• Raspberry Pi 4: If you need USB 3.0 or 4GB+ RAM for non-printing tasks
• Orange Pi Zero 2: For ultra-compact setups where Ethernet isn't required

For dedicated Klipper host duty, MKS-PI hits the sweet spot of price, performance, and convenience.

Frequently Asked Questions

Q1: Is MKS-PI compatible with all Klipper-supported printers?

A: Yes. Any printer running Klipper-compatible mainboards (SKR, MKS, FYSETC, etc.) works seamlessly. The connection uses standard USB serial or UART, identical to Raspberry Pi setups. Simply copy your existing printer.cfg and update the MCU serial path.

Q2: My USB WiFi adapter isn't detected. What should I check?

A: First, verify your adapter uses RTL8188CUS or RTL8188EUS chipset. Run lsusb in PuTTY to see detected devices. If missing, try a different USB port. Some adapters draw more power—use a powered USB hub if needed. The dmesg command shows kernel messages that diagnose driver issues.

Q3: Can I use OctoPrint instead of Fluidd?

A: Absolutely. While Makerbase's image includes Fluidd, you can install OctoPrint via pip install octoprint. The MKS-PI's hardware is fully compatible. Many users run Fluidd for daily use and OctoPrint for specific plugins, though this increases resource usage.

Q4: How does print quality compare to Raspberry Pi?

A: Identical. Klipper's real-time calculations occur on the printer's MCU. The host board's job is G-code streaming and web interface hosting. The MKS-PI's quad-core CPU handles these tasks with the same performance as a Pi 3B. Input shaping and pressure advance results are indistinguishable.

Q5: What's the TF card lifespan? Any special requirements?

A: Use high-endurance cards rated for continuous writing (e.g., SanDisk Max Endurance). Standard cards may fail after 6-12 months of logging. Enable log rotation and consider disabling Klipper's extensive logging for non-critical operations. A 16GB card provides ample space for system and print files.

Q6: Can I run multiple printers from one MKS-PI?

A: Technically yes, but not recommended. Klipper's architecture expects one host per printer. Running two instances consumes significant RAM and risks timing conflicts. For multi-printer farms, use one MKS-PI per printer—it's more reliable and isolates failures.

Q7: How do I update Klipper and the system?

A: Use these commands via PuTTY:

# Update Klipper
cd ~/klipper && git pull
sudo service klipper restart

# Update system
sudo apt update && sudo apt upgrade -y

Never update during an active print. Always backup your configuration first.

Conclusion: Why MKS-PI Deserves a Place in Your Workshop

The MKS-PI represents more than just a Raspberry Pi alternative—it's a purpose-built solution that removes barriers between makers and high-performance 3D printing. By combining robust hardware, stable power delivery, and a meticulously pre-configured software stack, Makerbase has created the ultimate turnkey Klipper host.

Its quad-core processing handles demanding Klipper features like input shaping and pressure advance without breaking a sweat. The triple USB ports and Ethernet connectivity provide flexibility for any setup, from minimalist single-printer configurations to professional print farms. Most importantly, the DC power input and pre-installed Armbian image eliminate the two biggest pain points of Klipper adoption: power instability and complex software setup.

Whether you're converting your first printer from Marlin or expanding a commercial operation, the MKS-PI delivers professional-grade reliability at a hobbyist-friendly price. The active community support and growing ecosystem of tutorials ensure you're never alone on your Klipper journey.

Ready to revolutionize your 3D printing experience? Visit the official repository at https://github.com/makerbase-mks/MKS-PI to download the latest system image, join the discussion, and access detailed documentation. Your high-speed, high-precision printing future awaits—no Raspberry Pi required.