Reprap Stepper Driver A4988 Stepper Motor Driver Module with Heatsink

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15-50 Days (ships out within 7 business days)
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Product Details

We will send the latest version of product, the upgraded function. It may has different shape or color. If you can’t agree, pls don’t buy. Pls choose available tracking info shipping method, never ask a tracking number if your shipping method is not available.

A4988 is a complete microstepping motor driver with built-in translator for easy operation. This product is available in full, half, 1/4, 1/8 and 1/16 step modes operate bipolar stepper motors, output drive capacity of up to 35 V and ± 2 A. A4988 includes a fixed off-time current regulator, the regulator in slow or mixed decay modes. A4988 converter is the key to the easy implementation. As long as the "step" input inputting one pulse drives the motor one microstep. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. A4988 interface is very suitable for complex microprocessor is unavailable or is overburdened.

In the micro-step operation, A4988 chopping control inside automatically selects the current decay mode (Slow or Mixed). In mixed decay mode, the device is initially set to a fixed downtime in some fast decay, then the rest of the slow decay downtime. Mixed decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption. Internal synchronous rectification control circuitry is provided to improve the pulse-width modulation (PWM) operation power consumption. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO), and crossover-current protection. Special power sequencing.

A4988 surface mount QFN package (ES), a size of 5 mm × 5 mm, nominal overall package height of 0.90 mm, with an exposed pad for enhanced thermal dissipation. This package is Pb (suffix-T), with 100% matte tin leadframe plating.

  • · Low RDS (On) Output
  • · Automatic current decay mode detection / selection
  • · Mix with slow current decay modes
  • · Synchronous rectification for low power dissipation
  • · Internal UVLO
  • · Cross-current protection
  • · 3.3 and 5 V compatible logic supply
  • · Thermal shutdown circuitry
  • · Ground fault protection
  • · Load short-circuit protection
  • · Optional step five modes: full, 1/2, 1/4, 1/8 and 1/16
  • Dear buyer:
  • Pls leave message you want which color, otherwise we ship green A4988 to you!

1 X A4988 Stepper Driver

If need more parts Pls click and submit the order.If you need more quantity,Pls contact us. If you mind the price,If some parts can not find out in my store,Pls contact us,we still have many parts don’t published.

We will send the latest version of product, the upgraded function. It may has different shape or color. If you can’t agree, pls don’t buy.

Please don’t open dispute and leave any bad feedback, if you have any question, feel free to contact us,we will give you satisfactory answer. Hope you understand us, thank you in advance.

When you place an order, please choose a shipping method and pay for the order including the shipping fee. We will send the items within 5 days once your payment is completed.

We do not uarantee delivery time on all international shipments due to differences in customs clearing times in individual countries, which may affect how quickly your product is inspected. Please note that buyers are responsible for all additional customs fees, brokerage fees, duties, and taxes for importation into your country. These additional fees may be collected at time of delivery. We will not refund shipping charges for refused shipments.

The shipping cost does not include any import taxes, and buyers are responsible for customs duties.

All order will ship out in 1-5 buiness after payment verify .Pls wait in patient.

China Post mail is not fast , Usally need 15-60days arriived.If in urgent .Pls choose DHL/ Fedex/EMS.We can write low value for cutomer if in need!

China Post Ordinary Small Packet Plus just can track to the domestic of our country,but it not effect your receiving.

If you want your products and don’t want to waste your time, pls choose China Post Registered Air Mail. If you choose China Post Ordinary Small Packet Plus and the package is lost. We will prove you we send the package and we only can refound 50%. This is your choose, We all have to take risks. If you can’t agree, pls don’t buy.

China Post Ordinary Small Packet Plus and China Post Registered Air Mail all can track in www.17track.net/en/

We do our best to serve our customers the best that we can.

We will refund you if you return the items within 15 days of your receipt of the items for any reason. However, the buyer should make sure that the items returned are in their original conditions. If the items are damaged or lost when they are returned, the buyer will be responsible for such damage or loss, and we will not give the buyer a full refund. The buyer should try to file a claim with the logistic company to recover the cost of damage or loss.

The buyer will be responsible for the shipping fees to return the items.

We will refund you if you return the items within 15 days of your receipt of the items for any reason. However, the buyer should make sure that the items returned are in their original conditions. If the items are damaged or lost when they are returned, the buyer will be responsible for such damage or loss, and we will not give the buyer a full refund. The buyer should try to file a claim with the logistic company to recover the cost of damage or loss.

The buyer will be responsible for the shipping fees to return the items.

We offer the 1-month free replacement.Buyers may request for a replacement within 15 days from your receipt of the product. The buyer should return the product in the original conditions to us and should bear the shipping costs for return.

We also provide 12-month free maintenance. The buyer should return the product in the original conditions to us and should bear the shipping costs for return. If any part is required to be replaced, the buyer should also pay for the costs of the parts to be replaced.

Before returning the items, please confirm the return address and the logistics method with us. After you give the items to the logistic company, please send us the tracking number. As soon as we receive the items, we will repair or exchange them ASAP.

Your satisfaction and positive feedback is very important to us. Please leave positive feedback and 5 stars if you are satisfied with our items and services.

If you have any problems with our items or services, please feel free to contact us first before you leave negative feedback. We will do our best to solve any problems and provide you with the best customer service.

Item Specifics
Brand Name:
HESAI
Ships From:
China
Model Number:
A4988 Stepper Motor
Shipping & Payment

Packaging Details

Type:
 piece
Weight:
0.01kg (0.02lb.)
Size:
5cm x 4cm x 3cm (1.97in x 1.57in x 1.18in)

Packaging Details

Type:
 piece
Weight:
0.01kg (0.02lb.)
Size:
5cm x 4cm x 3cm (1.97in x 1.57in x 1.18in)

SHIPPING AND DELIVERY

We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.

REFUNDS & RETURNS POLICY

Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.

Refunds

Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.

If you received the wrong item you can request a refund or a reshipment.

If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of SkypeIt - Things That Matters (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of www.skypeit.com

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.

Exchanges

If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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