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Details:
CNC Shield Board
Version: 3.0
Color: Red
Size(L*W*H): 68 x 53 x 18 mm
Voltage: 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. Uses removable A4988 or DRV8825 compatible stepper drivers.
2. The extension board can be used for carving machine, 3 d printer driver expansion board
3. GRBL 0.8 compatible. (Open source firmware that runs on an that turns G-code commands into stepper signals)
4. PWM Spindle and direction pins,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)
5. Compact design. Stepper Motors can be connected with 4 pin molex connectors or soldered in place.
6. Please note that this is an unassembled kit and Basic soldering skills are needed.
- A4988 Stepper Motor Driver
Color: Red
Size(L*W*H): 20 x 15 x 10 mm
Thermal shutdown circuitry: Yes
Crossover-current protection: Yes
Ground fault protection: Yes
Load short-circuit protection: Yes
Compatible logic supply: 3.3V and 5 V
Five selectable step modes: full, 1/2, 1/4, 1/8 and 1/16
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 Stepper Motor Driver
Color: Purple
Size(L*W*H): 20 x 15 x 10 mm
Driving current: 2.5A
Overheating Circuit Protection: Yes
Undervoltage Lockout: Yes
Cross Current Protection: Yes
Short circuit protection to ground: yes
Load Short Circuit Protection: Yes
Six selectable step modes: full, 1/2, 1/4, 1/8, 1/16, 1/32
Features:
1. Maximum current 2.5A
2. Support up to 32 subdivisions
3. 4-layer PCB board, better heat dissipation performance
4. The internal resistance of the chip is smaller, the heat generation is lower, and the heat dissipation is better
- R3 Board
MCU: ATmega328
Clock speed: 16 MHz
USB interface: ATmega16U2
Operating voltage: 5 V
I-I / O pin output current: 40 mA max
3.3 V output current: 150 mA max
Digital I/O pins: 14 (including 6 with PWM capability)
Analog input pins: 6
EEPROM: 1 kB
Static RAM (SRAM): 2 kB
Flash memory: 32 kB
Size(L*W*H): 68 x 53 x 10 mm
Package Include:
【Type1】：
1×CNC Shield
1×R3 Board
4×A4988 Driver Kit
【Type2】：
1×CNC Shield
1×R3 Board
4×DRV8825 Driver Kit
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