Description: 1. Compatibility and Size: Arduino Nano 3D Printer CNC Shield V4 is an expansion board designed for use with Arduino Nano microcontroller. Its compact size (72mm x 46mm) makes it ideal for CNC milling machines, 3D printers, and other automated applications where space is limited. 2. Connectivity: This shield offers a comprehensive set of input/output pins, enabling users to connect various motors, sensors, and actuators essential for CNC operations. The board includes stepper motor driver chips (L293D or A4988) with dedicated micro-stepping mode selection for precise positioning control. 3. Input/Output Channels: It offers 10 bi-directional digital I/O pins, 6 analog input pins, and 2 PWM (Pulse Width Modulation) outputs that can be configured to control heaters, spindles, or other accessories as needed. 4. Bidirectional Limit Switches: The shield features bidirectional limit switches for the X, Y, and Z axes, enabling closed-loop position feedback in CNC applications. These switch
| Specification | Details |
|---|---|
| Controller | Arduino Nano (ATmega328P) at the heart of the board compatible with Arduino IDE |
| Interface | UART interface for serial communication to connect to a PC or other devices |
| Motor Interface | 4 x motor ports (A0-A3) with voltage regulator and current limiting diodes |
| Stepper Motor Driver | Integrated DRV8825 stepper motor driver with microstepping capabilities |
| Endstops | 2 x endstop connectors (X Y Z) for homing and limit switching |
| Limit Switches | 6 x limit switch inputs for Z-axis bed and toolhead limit switches |
| Heated Bed Support | Heated bed voltage regulator with support for up to 12V input |
| Power Supply | +5V +12V -12V power outputs also suitable for connecting external components like USB hubs |
| Dimensions | Board size: approximately 100mm x 75mm (3.9" x 2.95") fits inside a standard Arduino shield holder |
| Operating Voltage | +5V +12V and -12V inputs supported; recommended operating voltage range: 7-12V |
| Operating Frequency | Up to 40Mhz for the microcontroller (ATmega328P) |
