Concise Title: RATTMMOTOR 3018 Pro DIY CNC Router Kit with GRBL Offline Controller

The 775 SPINDLE MOTOR features front and rear double ball bearings, providing universal DC 12V-24V voltage operation. The shaft diameter is 15mm, and the motor diameter (without magnetic sleeve) is 42mm, delivering large torque, low friction, and stable operation. The double ball bearings ensure low noise performance. The mounting hole diameter is M4, with a pitch of approximately 29mm.

The 3018 PRO CNC ROUTER MACHINE kit includes the following components: 1 x 3018PRO DIY MINI CNC Router Machine, 1 x Power Supply, 1 x CNC Offline Controller, 10 x Tip 0.1 mm, 20° 3.175 mm Drill Bits, 4 x Plate Clamps, 1 x English Manual, 1 x 4GB USB Flash Drive, and 1 x Brush with a set of Allen Wrenches. The work area measures 300x180x45 mm (11.8 x 7.1 x 1.8"), and the overall frame size is 420x350x270mm (16.53x13.78x10.63"). The machine is constructed using PA6 Nylon and Aluminum profile, powered by a 24V 5.6A power adapter (input voltage 110-240V). The 775 Spindle motor operates at 12-24VDC with a maximum speed of 10000RPM, and the Collet is ER11 3.175mm (can be equipped with 0-7mm). The NEMA17 stepper motors have a phase current of 1.3A and a torque of 0.25N.m, with a processing accuracy of approximately 0.2mm.

The CNC OFFLINE CONTROLLER allows for direct control of the CNC router without connecting it to a computer. It supports both SD and TF cards, with a standard capacity of 1G. After inserting the engraving file into the SD card, it can be directly identified and processed. The controller can also be connected to a computer via a USB cable to save files directly. Common supported file formats include nc, tex, and tap. To adjust the spindle speed, press the spindle button, then press and hold the OK button and the Z+/Z- button simultaneously to increase or decrease the speed.

The GRBL1.1 CONTROLLER BOARD features an input voltage of 12-24V, a master chip of Atmel 328P, and a PC-USB connection. It supports spindle PWM speed control, G-code (.nc/.txt/.tape/.gcode) files, and various functions such as limit switches, tool setting, servo control, and cooling fans. The board integrates the stepper motor drive, eliminating the need for a separate module and providing short-circuit protection. The offline recognition function allows for simultaneous connection to the offline controller and a computer, with the machine automatically recognizing the connection. The spindle support has been enhanced to accommodate up to 20,000 rpm, and the spindle power is adjustable from 0-100% via PWM or TTL signal control.

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