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3D Printer Stepper Motor Control Kit (Mega 2560 R3, RAMPS 1.4 control panel, A4988/DRV8825/AT2100 Stepper Motor Drivers)
$37.99
3D Printer Stepper Motor Control Kit
This kit is a standard electronics bundle for building or repairing DIY 3D printers, CNC machines, and other robotics projects. It features the Mega 2560 R3 as the main controller, the RAMPS 1.4 shield for power distribution and component interfacing, and a set of stepper motor drivers for precise motion control. This hardware stack is compatible with open-source firmware such as Marlin or GRBL.
Product Features
- Mega 2560 R3: Based on the ATmega2560, providing 54 digital I/O pins and 16 analog inputs to handle complex printer configurations.
- RAMPS 1.4 Shield: Specifically designed to sit atop the Mega to control up to 5 stepper motors, 3 thermistors, and 3 heater outputs (Extruder 1, Extruder 2, and Heated Bed).
- Modular Driver Slots: Features 5 slots for stepper motor drivers, allowing for easy replacement or mixing of different driver types (A4988, DRV8825, etc.).
- Fused Protection: Includes 5A and 11A resettable fuses to protect the electronics from overcurrent.
- Expansion Headers: Dedicated pins for connecting Endstops, LCD Displays (Smart Controller), and SD Card modules.
Technical Specifications
- Microcontroller: ATmega2560
- Input Voltage: 12V DC (Standard for RAMPS 1.4)
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Stepper Driver Options:
- A4988: Standard driver, up to 1/16 microstepping.
- DRV8825: High current (up to 2.5A), up to 1/32 microstepping.
- AT2100: Ultra-quiet operation with "Silent" technology.
- Heater Outputs: 3 (Heated Bed, Extruder 0, Extruder 1)
- Thermistor Inputs: 3 (100k NTC recommended)
Driver Comparison & Jumper Settings
To adjust microstepping, you must place jumpers on the pins underneath the stepper driver on the RAMPS board. Note that different drivers have different current limits and orientations.
| Driver Model | Max Microstepping | Main Benefit |
|---|---|---|
| A4988 | 1/16 Step | Standard, reliable, easy to tune. |
| DRV8825 | 1/32 Step | Higher torque and smoother motion. |
| AT2100 | 1/256 Interpolation | Near-silent motor operation. |
Package Contents
- 1 Mega 2560 R3 Board
- 1 RAMPS 1.4 Control Shield
- 5 Stepper Motor Drivers (Based on selection: A4988, DRV8825, or AT2100)
- 5 Aluminum Heatsinks with adhesive backing
- 1 USB Data Cable
- 1 Set of Jumper Caps