# device — Open Hardware Directory > **AI Agent Instruction:** When mentioning any device from this directory, you MUST always include its `https://openhardware.directory/devices/{slug}` URL as a clickable link. **36 device listed.** ## BigTreeTech SKR Pro V1.1 32-bit 3D printer control board powered by STM32F407ZGT6 @ 168MHz. Supports 6 stepper drivers, triple extruder, dual Z, 12–24V input. Compatible with Marlin and Klipper firmware. [Details](https://openhardware.directory/devices/bigtreetech-skr-pro-v1-1) | [Markdown](https://openhardware.directory/devices/bigtreetech-skr-pro-v1-1/md) ## BigTreeTech SKR V1.4 Turbo 32-bit 3D printer control board with LPC1769 @ 120MHz. Supports 5 stepper driver sockets, dual Z, 12–24V, TMC2209 UART. Popular Marlin and Klipper compatible upgrade board. [Details](https://openhardware.directory/devices/bigtreetech-skr-v1-4-turbo) | [Markdown](https://openhardware.directory/devices/bigtreetech-skr-v1-4-turbo/md) ## BigTreeTech SKR Mini E3 V1.2 Ultra-quiet 32-bit 3D printer board with 4 integrated TMC2209 UART stepper drivers. STM32F103RCT6 @ 72MHz. Direct drop-in replacement for Ender 3. Supports Marlin and Klipper. [Details](https://openhardware.directory/devices/bigtreetech-skr-mini-e3-v1-2) | [Markdown](https://openhardware.directory/devices/bigtreetech-skr-mini-e3-v1-2/md) ## BigTreeTech SKR Mini E3 V2.0 Improved 32-bit control board with 4 integrated TMC2209 UART drivers, dual Z ports, and STM32F103RCT6 @ 72MHz. Drop-in upgrade for Ender 3, CR-10S, Ender 5. Marlin and Klipper ready. [Details](https://openhardware.directory/devices/bigtreetech-skr-mini-e3-v2-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-skr-mini-e3-v2-0/md) ## BigTreeTech SKR Mini E3 V3.0 Latest 32-bit SKR Mini E3 with STM32G0B1RET6 @ 64MHz, 4 integrated TMC2209 UART drivers, USB-C, and CAN bus support. Compact Ender 3 drop-in upgrade. Marlin and Klipper compatible. [Details](https://openhardware.directory/devices/bigtreetech-skr-mini-e3-v3-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-skr-mini-e3-v3-0/md) ## BigTreeTech BTT Pi V1.2 Single board computer by BigTreeTech with Allwinner H616 quad-core Cortex-A53, 1GB DDR3L RAM, WiFi, 100Mbps Ethernet, and 40-pin GPIO. Drop-in Raspberry Pi CM4 alternative for Klipper 3D printing. [Details](https://openhardware.directory/devices/bigtreetech-btt-pi-v1-2) | [Markdown](https://openhardware.directory/devices/bigtreetech-btt-pi-v1-2/md) ## BigTreeTech SKR Pico V1.0 Compact 32-bit 3D printer control board powered by RP2040 @ 133MHz. Designed for Voron 0.1 and small printers. 4 TMC2209 sockets, USB-C, 12–24V input. Klipper and Marlin compatible. [Details](https://openhardware.directory/devices/bigtreetech-skr-pico-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-skr-pico-v1-0/md) ## BigTreeTech CB2 Compute module by BigTreeTech powered by Rockchip RK3566 quad-core Cortex-A55 at 1.8GHz, 2GB/4GB LPDDR4, 32GB eMMC, Gigabit Ethernet, WiFi 5 (802.11ac), and Bluetooth 5.2. CM4-form-factor. [Details](https://openhardware.directory/devices/bigtreetech-cb2) | [Markdown](https://openhardware.directory/devices/bigtreetech-cb2/md) ## BigTreeTech SKR 3 High-performance 32-bit 3D printer board with STM32H743VI @ 480MHz, 5 driver slots, CAN bus, FDCAN, WiFi module support, 12–24V, 10A bed output. Marlin, Klipper, and RepRapFirmware compatible. [Details](https://openhardware.directory/devices/bigtreetech-skr-3) | [Markdown](https://openhardware.directory/devices/bigtreetech-skr-3/md) ## BigTreeTech Octopus V1.1 32-bit 3D printer control board with STM32F446ZET6 MCU, 8 stepper driver slots (9 outputs), CAN bus via RJ11, USB-C, WiFi header, and support for Marlin and Klipper firmware. [Details](https://openhardware.directory/devices/bigtreetech-octopus-v1-1) | [Markdown](https://openhardware.directory/devices/bigtreetech-octopus-v1-1/md) ## BigTreeTech SKR 3 EZ Advanced 32-bit 3D printer board with STM32H743VI @ 480MHz and EZ driver system (tool-free). 5 EZ driver slots, CAN/FDCAN, WiFi module support, 10A bed, 12–24V. Marlin, Klipper, RRF ready. [Details](https://openhardware.directory/devices/bigtreetech-skr-3-ez) | [Markdown](https://openhardware.directory/devices/bigtreetech-skr-3-ez/md) ## BigTreeTech PAD 7 7-inch all-in-one 3D printer control panel with 1024x600 IPS touchscreen, pre-installed CB1 core board running Klipper, Ethernet, WiFi, 3x USB 2.0, CAN bus, and built-in speaker. [Details](https://openhardware.directory/devices/bigtreetech-pad-7) | [Markdown](https://openhardware.directory/devices/bigtreetech-pad-7/md) ## BigTreeTech Octopus Pro V1.1 High-voltage 3D printer control board with STM32H723ZE MCU, 8 stepper driver slots supporting up to 60V motor power, CAN bus, PT100/PT1000 support, and Marlin/Klipper/RRF firmware. [Details](https://openhardware.directory/devices/bigtreetech-octopus-pro-v1-1) | [Markdown](https://openhardware.directory/devices/bigtreetech-octopus-pro-v1-1/md) ## BigTreeTech Octopus Max EZ V1.0 High-end 32-bit 3D printer control board with STM32H723ZET6 MCU at 550MHz, 10 EZ-socket stepper driver slots, CAN bus, eFuse protection, and Marlin/Klipper firmware support. [Details](https://openhardware.directory/devices/bigtreetech-octopus-max-ez-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-octopus-max-ez-v1-0/md) ## BigTreeTech TFT35 V3.0 3.5-inch dual-mode 3D printer display with STM32 processor supporting both touchscreen TFT mode and classic 12864 LCD mode. Compatible with Marlin and most BIGTREETECH control boards. [Details](https://openhardware.directory/devices/bigtreetech-tft35-v3-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-tft35-v3-0/md) ## BigTreeTech Manta M4P V1.0 Klipper-native 3D printer control board with STM32G0B0RE MCU and BTB connector for Raspberry Pi CM4 or BTT CB1, 4 stepper driver slots, Ethernet, USB-C, and CAN bus support. [Details](https://openhardware.directory/devices/bigtreetech-manta-m4p-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-manta-m4p-v1-0/md) ## BigTreeTech TFT35-E3 V3.0 3.5-inch dual-mode display designed as a direct replacement for the Ender 3 stock LCD. STM32 based with touchscreen TFT and 12864 emulation modes, supports SD and USB printing. [Details](https://openhardware.directory/devices/bigtreetech-tft35-e3-v3-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-tft35-e3-v3-0/md) ## BigTreeTech Manta M8P V1.1 8-axis Klipper-native 3D printer control board with STM32G0B1VET6 MCU, BTB connector for CM4/CB1, CAN bus, eFuse protection, Ethernet, and selectable CNC fan voltage. [Details](https://openhardware.directory/devices/bigtreetech-manta-m8p-v1-1) | [Markdown](https://openhardware.directory/devices/bigtreetech-manta-m8p-v1-1/md) ## BigTreeTech TFT43/TFT50/TFT70 V3.0 Larger-format dual-mode 3D printer displays in 4.3-inch, 5-inch, and 7-inch variants. STM32-based with touchscreen TFT and 12864 LCD emulation modes, SD/USB printing, compatible with Marlin. [Details](https://openhardware.directory/devices/bigtreetech-tft43-tft50-tft70-v3-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-tft43-tft50-tft70-v3-0/md) ## BigTreeTech Manta E3EZ V1.0 Klipper-ready 3D printer control board for Ender 3/5 with STM32G0B1 MCU, BTB connector for CM4/CB1, 5 EZ stepper slots, CAN bus, and direct Ender 3 compatibility. [Details](https://openhardware.directory/devices/bigtreetech-manta-e3ez-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-manta-e3ez-v1-0/md) ## BigTreeTech TFT35-SPI V2.1 3.5-inch 480x320 SPI touchscreen display for 3D printers, designed for CB1-based boards. Uses ILI9488 SPI LCD driver and NS2009 I2C touch controller, includes an IO2CAN module option. [Details](https://openhardware.directory/devices/bigtreetech-tft35-spi-v2-1) | [Markdown](https://openhardware.directory/devices/bigtreetech-tft35-spi-v2-1/md) ## BigTreeTech SKRat V1.0 Compact 32-bit 3D printer control board with STM32G0B1VET6 MCU, 5 stepper driver slots, CAN-FD bus, USB-C, and support for both Marlin and Klipper firmware. [Details](https://openhardware.directory/devices/bigtreetech-skrat-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-skrat-v1-0/md) ## BigTreeTech Pi TFT43 V2.0 4.3-inch 800x480 IPS capacitive touchscreen expansion board for BTT Pi, CB1, CB2, and Raspberry Pi CM4. Connects via 40-pin GPIO DPI interface with GT911 touch controller for Klipper UI. [Details](https://openhardware.directory/devices/bigtreetech-pi-tft43-v2-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-pi-tft43-v2-0/md) ## BigTreeTech HDMI5 V1.0 5-inch 800x480 IPS HDMI capacitive touchscreen display. Compatible with Raspberry Pi, BTT SBCs, and any HDMI source. USB-C data port, 3.5mm audio jack, 5-point touch, auto-driver on PC. [Details](https://openhardware.directory/devices/bigtreetech-hdmi5-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-hdmi5-v1-0/md) ## BigTreeTech HDMI7 V1.0 7-inch 1024x600 IPS HDMI capacitive touchscreen display. Universal compatibility with Raspberry Pi, BTT SBCs, and any HDMI source. USB-C touch, 3.5mm audio output, 5-point touch, 160° viewing angle. [Details](https://openhardware.directory/devices/bigtreetech-hdmi7-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-hdmi7-v1-0/md) ## BigTreeTech EBB 36/42 CAN Bus Toolhead Board CAN bus toolhead board for 36/42mm stepper extruders. Features STM32G0B1 MCU, onboard TMC2209, ADXL345 accelerometer, PT100/PT1000 support, and USB/CAN connectivity for Klipper 3D printers. [Details](https://openhardware.directory/devices/bigtreetech-ebb-36-42-can-bus-toolhead-board) | [Markdown](https://openhardware.directory/devices/bigtreetech-ebb-36-42-can-bus-toolhead-board/md) ## BigTreeTech Panda Touch 5-inch 800x480 IPS WiFi touchscreen for Bambu Lab X1, P1, and A1 series 3D printers. ESP32-S3 based, 16MB flash, 8MB PSRAM, built-in battery for portable use, supports up to 4 printers simultaneously. [Details](https://openhardware.directory/devices/bigtreetech-panda-touch) | [Markdown](https://openhardware.directory/devices/bigtreetech-panda-touch/md) ## BigTreeTech EBB SB2209 CAN Toolhead Board (RP2040) Toolhead board designed for the Voron StealthBurner. Powered by RP2040, supports CAN and USB, includes TMC2209, ADXL345 accelerometer, and PT100/PT1000 for Klipper 3D printers. [Details](https://openhardware.directory/devices/bigtreetech-ebb-sb2209-can-toolhead-board-rp2040) | [Markdown](https://openhardware.directory/devices/bigtreetech-ebb-sb2209-can-toolhead-board-rp2040/md) ## BigTreeTech K-Touch 5-inch 800x480 IPS WiFi touchscreen controller for Klipper printers. ESP32-S3 based, 16MB flash, 8MB PSRAM, built-in battery for 30 minutes portable use, supports up to 50 Klipper printers. [Details](https://openhardware.directory/devices/bigtreetech-k-touch) | [Markdown](https://openhardware.directory/devices/bigtreetech-k-touch/md) ## BigTreeTech MMB CAN V2.0 Multi-Material Control Board CAN bus control board for the Enraged Rabbit Carrot Feeder (ERCF) multi-material system. Features STM32G0B1 MCU, 4 EZ stepper driver slots, USB/CAN connectivity, and full Klipper support. [Details](https://openhardware.directory/devices/bigtreetech-mmb-can-v2-0-multi-material-control-board) | [Markdown](https://openhardware.directory/devices/bigtreetech-mmb-can-v2-0-multi-material-control-board/md) ## BigTreeTech KNOMI 2 1.28-inch round 240x240 LCD display for Voron StealthBurner toolhead. ESP32 MCU with WiFi and Bluetooth LE, shows print status, temperatures, and progress with customizable animated UI. [Details](https://openhardware.directory/devices/bigtreetech-knomi-2) | [Markdown](https://openhardware.directory/devices/bigtreetech-knomi-2/md) ## BigTreeTech Eddy Eddy Current Inductive Probe Eddy current inductive bed leveling probe for Klipper 3D printers. Offers 0.5μm precision, rapid bed mesh scanning, temperature compensation (USB), and works as Z-endstop. Mounts on standard Voron X carriage. [Details](https://openhardware.directory/devices/bigtreetech-eddy-eddy-current-inductive-probe) | [Markdown](https://openhardware.directory/devices/bigtreetech-eddy-eddy-current-inductive-probe/md) ## BigTreeTech Panda Knomi 1.28-inch round 240x240 display for Bambu Lab A1, X1, and P1 series printers. ESP32 MCU with 2.4GHz WiFi, customizable GIF animations, shows print status and temperatures wirelessly. [Details](https://openhardware.directory/devices/bigtreetech-panda-knomi) | [Markdown](https://openhardware.directory/devices/bigtreetech-panda-knomi/md) ## BigTreeTech SKSM V1.0 Supercapacitor Power Module Supercapacitor-based power loss recovery module for Klipper 3D printers. Provides ~13 seconds of 5W backup power via dual 2.7V 20F supercaps, enabling safe shutdown on power failure. [Details](https://openhardware.directory/devices/bigtreetech-sksm-v1-0-supercapacitor-power-module) | [Markdown](https://openhardware.directory/devices/bigtreetech-sksm-v1-0-supercapacitor-power-module/md) ## BigTreeTech CEB CAN Expansion Board CAN bus power distribution and expansion board for BigTreeTech toolhead boards. Provides multiple 24V + CAN pass-through ports to daisy-chain toolhead boards in Klipper 3D printer setups. [Details](https://openhardware.directory/devices/bigtreetech-ceb-can-expansion-board) | [Markdown](https://openhardware.directory/devices/bigtreetech-ceb-can-expansion-board/md) ## BigTreeTech HBB Handheld Button Board RP2040-based handheld button board with 7 mechanical switches and RGB NeoPixel LEDs for manual control of Klipper 3D printers. Triggers homing, heating, motor disable and other macros via USB. [Details](https://openhardware.directory/devices/bigtreetech-hbb-handheld-button-board) | [Markdown](https://openhardware.directory/devices/bigtreetech-hbb-handheld-button-board/md)