: Often utilizes an ARM STM32 32-bit microcontroller for faster processing compared to older 8-bit boards. Stepper Motor Drivers : Integrated A4988 drivers for X, Y (dual), and Z axes. Power Input : Supports a wide voltage range, typically 12V to 36V DC Interfaces : Standard connection to a PC (Type-C on newer versions). Offline Controller Port
| Setting | Default | Recommended (mill) | Description | |---------|---------|-------------------|-------------| | $100, $101, $102 | 250 | (if 8mm lead screw) | Steps/mm for X, Y, Z | | $30 | 1000 | 1000–30000 | Max spindle speed RPM | | $31 | 0 | 0 (PWM active high) | Spindle PWM invert | | $32 | 0 | 0 (mill) / 1 (laser) | Laser mode | | $20 | 0 | 1 | Soft limits (enable) | | $21 | 0 | 1 | Hard limits (enable if switches wired) | | $22 | 0 | 1 | Homing cycle enable | annoy tools cnc board manual pdf