This A4988 equipped board is a micro stepper motor driver with a built-in converter. The product can be in full, half, 1/4, 1/8 and 1/16 step mode operation bipolar stepper motor with an output driving performance up to 35 V and + / - 2 A. A4988 includes a fixed current regulator close time, the voltage stabilizer can work in a slow or mixed decay modes. A4988 interface is very suitable for the application of complex microprocessor is unavailable or overload.
In micro step setting, the chopping control for A4988 can automatically select current attenuation mode (slow or mixed). In hybrid damping mode, the initial setting for device is fast attenuation and then changes to slow attenuation. Mix or decaying current control scheme can reduce motors noise and increase the precision stepper and reduce power consumption. Provide internal synchronous rectifier control circuit, in order to improve the pulse width modulation (PWM) operation of power consumption. Internal circuit protection removes overheating lag, under-voltage lockout (UVLO) and crossover current protection.
A4988 QFN package (ES) surface installation is adopted, the size is 5 mm x 5 mm, on the surface layer contains the radiator, and with cooling plate for better heat dissipation.
- Estimated Delivery Time:
- 1 to 2 Business days for Sydney, Newcastle, Wollongong and Canberra
- 2 to 3 Business days for Melbourne, Brisbane and surrounding areas
- 3 to 10 Business days for Adelaide, Perth and Tasmania
Returns Policy
We understand that there are instances where you might change your mind about your purchases. Oz Direct offers a 14 day change of mind policy. Products returned must be in “as sold” condition. That means that products must returned in original undamaged packaging with complete accessories and instruction manuals supplied. Products that meet the mentioned “change of mind policy” will have the refund returned to the original payment method.
Return freight for products under change of mind policy is covered by the purchaser. Freight or Shipping costs paid on the original invoice under the Change of Mind Policy is not refundable.
Please note that there are product exclusions from our change of mind policy. Product change of mind exclusions will be specifically mentioned in the products detail. These product exclusions are due to health and safety reasons and no return or refund will be permitted.
Warranty Policy
Oz Direct offer 12 months warranty, unless stated otherwise in the product copy or Care/Warranty tab on the products page on our website. The products we offer comes with guaranteed that cannot be excluded under the Australian Consumer Law. The customer is entitled to a replacement or refund should a major failure occur and for compensation for any other reasonably foreseeable loss or damage. Our customers are also entitled to have the products repaired or replaced should the products fail to meet acceptable quality and the failure does not amount to a major failure. Should there be defects in materials, components and workmanship is identified within the specified warranty period, Oz Direct will decide to repair or replace the product.
Warranty is subject to inspection and determined that the defect was not caused by or contributed by external and other factors beyond our control. This includes mis-use, excessive use, improper installation, maintenance, repair, tampering or modifications to the product that is not stated and recommended by the manufacturer.
Warranty can be claimed by contacting Oz Direct and returning the product within the Warranty Period with the original Tax invoice. Postage and Freight to and from in relation to warranty claims is the responsibility of the customer.
Oz Direct makes no warranty or guarantee regarding the suitability or replaceability of its products for any purpose. Oz Direct does not assume any liability from the application or use of any products, including consequential or incidental costs, damage or injury. All installation, testing and operating parameters must be validated by the customers qualified technical experts.
3 Month Warranty