V3.0 Engraver CNC Shield+R3 Board+4pcs A4988/DRV8825 Driver Expansion Board for 3D Printer Set Kit COD

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Version: 3.0Color: RedSize(L*W*H): 68 x 53 x 18 mmVoltage: DC 12~36 V (At the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)



Features:1. Mix with slow current decay modes.2. Internal UVLO and Low RS (On) Output.3. Automatic current decay mode detection/selection.4. Synchronous rectification for low power dissipation.5. Warning: Connecting or disconnecting a stepper motor while the driver is powered can destroy the driver.
DRV8825
Driving current: 2.5A
Overheating Circuit Protection: YesUndervoltage Lockout: YesCross Current Protection: YesShort circuit protection to ground: yesLoad Short Circuit Protection: YesSix selectable step modes: full, 1/2, 1/4, 1/8, 1/16, 1/32
1. Maximum current 2.5A2. Support up to 32 subdivisions3. 4-layer PCB board, better heat dissipation performance4. The internal resistance of the chip is smaller, the heat generation is lower, and the heat dissipation is better
- R3 Board
MCU: ATmega328Clock speed: 16 MHzUSB interface: ATmega16U2Operating voltage: 5 VI-I / O pin output current: 40 mA max3.3 V output current: 150 mA maxDigital I/O pins: 14 (including 6 with PWM capability)Analog input pins: 6EEPROM: 1 kBStatic RAM (SRAM): 2 kBFlash memory: 32 kBSize(L*W*H): 68 x 53 x 10 mm

Package Include:
1×CNC Shield1×R3 Board4×A4988 Driver Kit
1×CNC Shield1×R3 Board4×DRV8825 Driver Kit