SKR V1.4 Turbo – Integrated Solution for 3D Printers - EXSKR1.4

Board specifications:

Input voltage: 5V USB and 12/24VDC screw terminal, up to 15A
Overcurrent protection: 20A fuse for bed heating, 10A fuse for the rest of the electronics
Logic operating voltage (microcontroller): 3.3V
Connector types: USB-B, screw terminals, pin/socket headers
Microcontroller: LPC1769– 32-bit, 120MHz frequency
Buttons: RESET button for easy restart
Supported stepper motor drivers: TMC5161, TMC5160, TMC2209, TMC2225, TMC2208, TMC2130, ST820, LV8729, DRV8825, A4988
Driver interfaces: X, Y, Z, E0, E1
Control of 3 MOSFET transistors – TH0, TH1, THB, brought out to screw terminals
Slot for SD card
Dimensions: 110x85mm
Mounting holes: 102x76mm

€34.80 pcs

Tax included

Microcontroller parameters:
- Programmable flash memory: 512 kB
- SRAM memory : 64kb
- General-purpose input/output pins: 70
- Analog inputs: 2-bit ADC
- UART ports: 4 hardware serial ports
- LAN: built-in network support
- USB communication: built into the microcontroller LPC1769
- Maximum allowable current per input/output pin: 20mA
- Support for SD card
Support and filtering for 3 endstops
3 pins for thermistors – TH0, TH1, TB, 100k NTC
Support for screens – LCD2004, LCD12864
Header pins for connecting a wifi module ESP01S

BTT SKR V1.4 Turbo is a microcontroller board designed for controlling 3D printers WITHOUT an additional adapter board. The board is optimized for building small to medium-sized 3D printers with extended functionality. It is based on the LPC1769 microcontroller, with a clock speed of 120MHz, 512kB flash and 64kB SRAM memory. Numerous signals for controlling the 3D printer are brought out to socket and pin headers. The board supports 5 stepper motor drivers (X, Y, Z, E0, E1) with dedicated output pins for the motors. The STEP, DIR, ENA signals can be taken from pin headers when using external drivers. Headers are provided for connecting endstops, along with filter circuits for proper triggering. Connectors for standard LCD screens are available. Screw terminals are provided for connecting 3 heaters (for extruders and heated bed), and 3 inputs for thermistors are brought out to headers for temperature control. Multiple standard 2-pin connectors for connecting fans are located on the board. Miniature LEDs allow checking of activated outputs – heaters and fans, as well as the presence of supply voltage. A RESET button is available for restarting the microcontroller board.

The following can be noted as extended functions:

· Connection of an SD card for firmware updates or for printing from it

· Connector for connecting a wireless wifi module – ESP01S

· Connectors for communication – SPI, I2C

· Connector for connecting RGB lighting

Power supply for the BTT SKR V1.4 Turbo is via the USB connector or from the screw terminals, selectable via a jumper. The screw terminal power supply is 12-24V.

Multiple signals are brought out to all headers, each of which can be seen on the bottom layer of the board, printed in white.

Advantages of the BTT SKR V1.4 Turbo compared to solutions based on RAMPS boards:

Low price – the price of Arduino MEGA2560 + RAMPS + Drivers is usually higher than the BTT SKR V1.4 Turbo solution.
Higher movement speed – thanks to the higher clock speed of the microcontroller (120MHz) , more frequent pulses are possible for the STEP pins of the drivers.
Works with Smoothieware firmware – thanks to the 32-bit microcontroller, it is possible to use Smoothieware firmware for CNC systems, including Lasers and 3D printers. Smoothieware is open source and available on GitHub
Ability to connect to a wifi network
Ability to connect a screen
Filtered inputs for endstops
Additional connector for a second Z motor
High current for heated bed: 20A fuse
High current for extruder heating: 10A fuse