Olearn StepStick Reprap A4988 Stepper Motor Driver With Heatsink
Packing list
1pcs * A4988 (2A)
1pcs*heat sink
The current calculation : i = vref /0.8
Potentiometer has three pins, the voltage Vref is with a multimeter test for the 4988 direction of the pin, the current can be adjusted by potentiometer. It will increase clockwise, oppositely , reduce counterclockwise.
Advantage :
1.High quality 2OZ copper PCB replaces using cheaper 1OZ PCB.
2.Products have bee tested one by one;and excellent work.
3.Free aluminium heat-sink.
4.Solder overgild needles and newest chip.
Parameters:
Size: 1.5mmX2mm (for RAMPS, ultimaker or other compatible boards)
Driver current: 2A (it is best to install the heat sink )
Microstep: 1,1 / 2,1 / 4,1 / 8,1 / 16
Manufacturing process: made by SMT , higher yield, excellent stability.
Usage on :
1. 3Dprinter ,cnc , carving machine, etc .
2. Support 3D printer with Prusa Mendel, ultimaker, printbot, makerbot etc .
3. Refer to Arduino code , directly drive motor.
Features :
1. Suitable for stepper motor driver below 8V ~35V, 2A
2. Simple microstep and direction control interface
3. Can adjust max current output by controlling potentiometer to get higher microstep
4. Detection and selection on attenuation mode of automatic current.
5. Thermal shutdown circuit, undervoltage lockout, crossover current protection
6. Good protection on ground and load short circuit
Our Company
OLEARN is trademark brand in China, owned by Shenzhen OLEARN Technology Co., Ltd.
We focus on generic 3D printer parts and CNC parts, stock all of them for fast delivery.
If you need someone who stands behind you and not competitive with you directly through Amazon, Ebay, Aliexpress or anyother online platforms, OLEARN is your best choice.
Welcome to inquiry for more detail about 3d printer spare parts and cnc parts.
Here is our office web, welcome to open and browse!
Shipping
For the delivery issue, we cooperate with a professional forwarder company which would deal with all the issues for you during the delivery process with 7~10 working days super fast arrival time.
Also if you had official Express Account, we can also deliver the goods to you via Official Express directly.
FAQ
Q:What is the products ready time?
A:If we have enough units in stock, the products ready time would be within 3 working days.
Q:Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q:What's your price term.
A: Normally FOB CIF CFR EX-work,DDP,DDU etc.