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Details about  4 x A4988 stepper driver (pololu compatible) 3D printer, reprap, prusa, mendel

4 x A4988 stepper driver (pololu compatible) 3D printer, reprap, prusa, mendel See original listing
4-x-A4988-stepper-driver-pololu-compatible-3D-printer-reprap-prusa-mendel
Item Ended
Item condition:
New
Ended:
27 Dec, 2013 09:36:05 GMT
Price:
US $35.00
[
History:
]
 
Approximately £20.71(including postage)
Postage:
US $15.00 (approx. £8.87) Expedited Int'l Shipping | See details
International items may be subject to customs processing and additional charges.  help icon for delivery - opens a layer
Item location:
Kowloon, Hong Kong

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Description

eBay item number:
150871293385
Seller assumes all responsibility for this listing.
Last updated on  10 Oct, 2013 11:09:51 BST  View all revisions

Item specifics

Condition:
New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is ... Read moreabout the condition
 


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 FedEx door to door from Hong Kong in just 2-4 days, just 15.00 USD

You are bidding for (four pieces) A4988 stepper driver in stylish black&white color
all headers are soldered, the driver 100% TESTED one by one and well packed !

Please check on the picture below, especially the soldering quality !

The set comes with heat sink comes with conductive sticker exactly as pictured!





NOTE: Stickers are on the bottom of the box, please check the picture




tested and ready to use no soldering required

IMPORTANT NOTE:

Those are 100% compatible drivers with Pololu schematic diagram and genuine A4988 IC on it, those are not inferior A4984 drivers !!!


The A4988 is a complete microstepping motor driver with built-in translator for easy operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A. The A4988 includes a fixed off-time current regulator which has the ability to operate in slow or mixed decay modes.

The translator is the key to the easy implementation of the A4988. Simply inputting one pulse on the STEP input drives the motor one microstep. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. The A4988 interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened.

During stepping operation, the chopping control in the A4988 automatically selects the current decay mode, Slow or Mixed. In Mixed decay mode, the device is set initially to a fast decay for a proportion of the fixed off-time, then to a slow decay for the remainder of the off-time. Mixed decay current control results in reduced audible motor noise, increased step accuracy, and reduced power dissipation.

Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO), and crossover-current protection. Special power-on sequencing is not required.


  • Low RDS(ON) outputs
  • Automatic current decay mode detection/selection
  • Mixed and Slow current decay modes
  • Synchronous rectification for low power dissipation
  • Internal UVLO
  • Crossover-current protection
  • 3.3 and 5 V compatible logic supply
  • Thermal shutdown circuitry
  • Short-to-ground protection
  • Shorted load protection
  • Five selectable step modes: full, 1/2, 1/4, 1/8, and 1/16


Content of package:
- 4 x A4988 stepper driver
- 4 x Heat sink
- 4 x Conductive sticker
(you can find the sticker on the bottom of the box, please check picture above)

Do you have probelms with your purchase? Please don't hessitate to contact us.

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SHIPPING and HANDLING


With us you are safe, all our parcels have insurance. In case your parcel gets lost, you are getting free replacement from us, no need to worry!
We are shipping by FEDEX only! It's fast, it's safe and you can track your goods real time anytime anywhere. We do not ship to PO BOX !!!

- Very Fast shipping  by Fedex Priority ! You have not to wait weeks for your goods.
- We offer combined shipping, buy from our eBay shop as many items as you want, we won't charge you a  single penny for any additional product.


Buyer is responsible for any import tax or other import duties!

We ship worldwide but there are some exclusions, please check the exclusion list upon bidding!

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