Adafruit
TinyG CNC Controller Board v8
The TinyG project is a high performance, USB based CNC 6-axis controller that supports XYZ linear and ABC rotary axes with 4 motor outputs. It is designed fo...
The TinyG project is a high performance, USB based CNC 6-axis controller that supports XYZ linear and ABC rotary axes with 4 motor outputs. It is designed for small CNC applications and other applications that require highly controllable motion control. TinyG is meant to be a complete embedded solution for small or medium motor control.
Main Features:
- Full, integrated motion control system with embedded microcontroller (Atmel ATxmega192) and 4 stepper motor drivers (TI DRV8811) integrated on a ~4 inch square board
- Four stepper motor drivers
- Accepts G-code from USB port and interprets it locally on the board
- Axis/motor mapping to support dual gantry and other configurations (e.g. XYYZ, XYZA, XYZC...) of a 6-axis control (XYZ + ABC rotary axes) setup
- Acceleration planning performed using constant jerk motion equations (3rd order S curves) for very smooth and fast motion transitions for lines and arcs
- Very smooth step pulse generation using phase-optimized, smart oversampling, fractional step DDA running at 50 Khz with very low jitter (<<1uSec)
- Networkable via RS485 to support motion peripherals and for networking mutliple boards for multi-axis systems and for really interesting projects (up to 1000 stepper axes)
- Stepper drivers handle 2.5 amps per winding which will handle most motors up thru NEMA23 and some NEMA34 motors.
- Micro-stepping up to 1/8 (optimized DDA makes this smoother than many 1/16 implementations)

Jargon buster
Plain-language definitions for the technical terms used above.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- oversampling
- Taking many measurements and combining them to reduce noise and improve the stability of a reading. It matters when you want smoother current or power measurements, though it can make updates slower.
- RS485
- RS485 is a robust wired serial communication standard often used in factories, farms, and buildings where cables may be long or electrically noisy. It matters because it lets this controller connect to industrial sensors, meters, and control equipment over longer distances than typical hobby serial wiring.
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