CNC Shield Arduino UNO/Mega Compatible

Description

Features

·          Arduino UNO Compatible

• 14 digital input/output pins – 6 pins can be used as PWM outputs
• 6 analog inputs
• 16 MHz crystal oscillator
• Operates at 5V
• Recommended input voltage range: 7V to 12V
• Flash Memory: 32 KB (0.5KB used by bootloader)
• SRAM: 2KB
• EEPROM: 1KB

·           CNC Shield

• Version 00
• 4-Axis support (X, Y, Z, A-Can duplicate X, Y, Z or do a full 4th axis with custom firmware using pins D12 and D13)
• 2 x End stops for each axis (6 in total – each axis pair shared by same IO pin)
• Spindle enable and direction connection
• Coolant enable connection
• Uses GRBL as control software

• Power supply: DC 12-36V (only the DRV8825 drivers can handle up to 36V so if using A4988 do not exceed 24V)
• Uses removable stepper drivers (DRV8825 or A4988)
• Stepper Motors can be connected with 4 pins dupont/molex connectors
• Jumpers to set Micro-Stepping

·          DRV8825 Stepper Drivers

• Low RDS (ON) outputs
• Automatic current decay mode detection / selection
• Internal UVLO
• Mixed with slow current decay modes
• Synchronous rectification for low power dissipation
• Crossover-current protection
• Thermal shutdown circuitry
• 3 and 5 V compatible logic supply
• Ground Fault Circuit
• Load short-circuit protection
• Six microstepping modes: full, 1/2, 1/4, 1/8, 1/16 and 1/32