The 4-Axis CNC Motherboard Compact Edition is designed for the demanding users of small CNC machines. It features a 240MHz dual-core 32-bit processor, USB connectivity and the ability to generate up to 120kHz pulses to simultaneously drive four stepper motors.
The four Terminal Switch and Probe inputs are opto-isolated to keep out any external electromagnetic interference while all other outputs such as Spindle PWM, Spindle Enable, Mist and Flood Coolant operate on a stable and clean 5VDC current.
The 4-Axis CNC Motherboard Compact Edition comes equipped with four DRV8825 drivers capable of driving Nema 17 and Nema 23 stepper motors that operate from 24V to 36V and require a maximum current of 2Amps.
Our 4-Axis motherboard is compatible with many GCode Sender applications for the GRBL firmware. We recommend using Focus.
Useful Links: Help & Support (Drivers, User Manual etc.)
Discord Server link: https://discord.gg/nRKETyjJ7E
Motor Outputs
Up to 4 Stepper motors
Max. Step Frequency
120Khz
Limit Switches
4 opto-isolated limit switch inputs (12VDC)
Tool Setter / Probe
Opto-isolated tool setter input (12VDC)
Spindle Control
PWM output for Spindle control up to 10Khz (5VDC)
Coolant
Mist and Flood coolant outputs (5V DC)
Other
Reverse Polarity Protection; Samsung Ceramic Capacitors
MCU
ESP32-WROOM-32 with Dual Core Xtensa 32bit CPU @ 240MHz and 520Kb SRAM
Firmware
Rabbit GRBL for ESP32
Drivers
4x DRV8825 with Microstepping x32
Connectivity
USB
Voltage Input
24V-36V
Ambient Τemperature
15°C – 50 °C (59°F – 122°F)
Size (W x D x H)
105mm x 88mm x 25mm
Package Size (W x D x H)
135mm x 110mm x 60mm
Net Weight
80gr