1 Pcs A3967 V44 Easydriver Stepper Motor Driver Development Board For Arduino

US $540

  • China, China
  • Oct 27th
Notice: When the Flashlight is dimming ,you should recharge the battery, do not use the battery when no electric charge, the battery will be no electricity !!!   Introductions: The exceptionally popular, our Swat 3 Modes Dimmable Focusing Rechargeable Aluminum Alloy LED Flashlight is equipped with 120 lumens and 3-hour running time. Crafted from high-strength aluminum alloy, this flashlight is of great durability. It is shock-resistant as well as water-resistant. The flashlight features a high intensity XPE bulb allowing its lifespan to extend. Coming attached with a rechargeable Li-ion battery, it supports continuous working performance. In addition, such a portable and handy flashlight is quite convenient and easy for daily use! Features: 1. Advanced focus system; fully adjustable focus from a spot to flood beam 2. Bezel can be rotated into desired focus level 3. The flashlight switch has three modes of light output 4. 3.7V lithium ion battery ensures long-lasting working time 5. Top-class aluminum alloy casing ensures its good durability and solid structure 6. Handy size, portable and convenient to use Specifications: 1. Material: Aluminum Alloy 2. LED Quantity: 1 Piece 3. Mode Arrangement: High, Low, SOS 4. Switch Type: Button 5. Dimmable: Yes 6. Rechargeable: Yes 7. Dimensions: (6.30 x 1.18 x 1.18)" / (16 x 3 x 3)cm (L x W x H) 8. Weight: 9.17oz / 260g Package Includes: 10 x LED Flashlight 10 x Car Charger 10 x USB Charging Cable 10 x 3.7V Li-ion Battery 10 x Safety Wand   Shipping: 1. Ship worldwide from New Jersey by reliable shipping companies -- USPS, UPS, FEDEX, DHL, etc., and only to VERIFIED PAYPAL ADDRESS. Transport Delivery ETA. Package handling only takes 1 business day at our warehouse, so please make sure entering correct payment and shipping information before checking out. Once your payment is completed, we are not going to accept any more changes to your order. 2. International Buyers – Please Note: a. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. b. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. 3. Please check your shipping address carefully before checkout, it can't be changed if order completed. 4. Orders placed on weekend will be shipped within 2 days.Notification of shipment with tracking number will be sent to buyers. 5. Standard shipping: 2-7 business days     Expedited Shipping: 2-3 business days     One-day Shipping: 1 business day     International shipping: Varies 6.Ship within 1 business day once payment completed. Notification of shipment with tracking No. will be sent to buyer. 7.We offer discounts for combine shipping. Please contact us first if you need combine shipping, and an invoice with discount will be sent to you. 8.Please allow 5 business days for delivery to US destinations on any eBay orders and 14 business days for delivery to any International destinations. We highly recommend our buyer choose priority/expess mail for international delivery which is much more stable. Payment: Payment should be sent within 8(EIGHT) days of auction closing. Returns: 1. Refunds given only if item DOA and cannot be replaced via PAYPAL . If so, Please contact us with 5 days since you receive the item and and return to us within 30 days from the delivery date for exchange or refund. 2. Return shipping fee is the responsibility of buyer unless the return is a result of our mistake.And all NON-seller mistake returns for refund are subject to 20% re-stocking fee. 3. If you need return, please contact our customer service representative, let us know the detailed problem and send us some pictures for confirmation. Feedback: 1.If you are dissatisfied for any reason, please donot be quick to leave negative/neutral feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. 2.If you are satisfied with the product you received,please leave us positive feedback and 5 scores DSR. Contact us: Work Time:Monday to Saturday Reply: All replies will be sent to your email box, if you don't get response within 24 hours (Sat. & Sun. excluded) please check your eBay My Messages in case that our emails will be filtered automatically by your settings. 1 Pcs A3967 V44 EasyDriver Stepper Motor Driver Development Board For Arduino Descripton Description: Stepper motor is usually defined with stepping angle or numbers of steps parameter, the general motor revolution is divided into 200 steps, which is the step angle of 1.8 degrees, EasyDriver has the function of interval subdivision, this driver board subdivision 8 segments, that is, each step of the motor is subdivided into 8 small step, this can be more precise control, that is to say, the EasyDriver needs to 1600 steps to complete a full 360 degree rotation. a3967slb PWM constant current control micro step distance driving for two phase stepper motor drives which is produced by allegro company in the United State. Its working voltage up to 30v, the drive current is 750ma, a a3967slb can drive a two-phase stepper motor drive and achieve 8 segments. The chip pwm current control circuit can be added to the pfd voltage and set to slow, fast and mixed three current-decay mode, if the voltage is higher than pfd end 0.6vdd, select slow decay mode. If less than 0.21vdd, then select the fast decay mode. Between the two decay modes is mixed mode. In addition, a3967slb also provide comprehensive protection measures, including transient voltage suppression, overheat protection against current through, under-voltage self-locking function. No additional other interface circuit between a3967slb and microprocessor, the chip taken easystepper interface, made 8 control lines reduce to 2 ( step and direction ), just need to simply enter the stepper motor control's pulse , its embedded converter can be achieved on the stepper motor control. A3967slb need some resistors, capacitors to adjust its operating parameters, the whole drive circuit is very simple. Specification: Ms1 and ms2 is the logic input port that selected by subdivide resolution of the stepper motor. Dir is the selects mouth of running direction of motor. Reset is used for reset the chip's original value, block all external output. Step is the pulse input port. Out1a, out1b, out2a, out2b is the h bridge's two pairs of output ports. Enable is enable end. sense1, sense2 is the h bridge's current sense resistor. Ref is the reference voltage. Qnd is logic and power. Rc1, rc2 is h bridge fixed deadline analog input. Package included: 1 x EasyDriver stepper motor driver   CONTACT US PAYMENT METHOD SHIPPING POLICY RETURN & WARRANLTY ABOUT REPLY ABOUT FEEDBACK Work Time:Monday thru Saturday We are factory specializing in the manufacture and export of cycling clothing .we can offer a competitive price with high quality products,customization & wholesale service are accept.Please feel free to contact us for any inquiries. Why buy from us? 1.Quality items - Our products are sold worldwide, we supply our products to large and small retailers. 2.Competitive prices - We offer our products at amazingly low prices to the public. 3.Excellent communication - All inquiries will be responded promptly. 4.Fast shipment - Your orders will be packed and shipped out shortly once payment has been received/cleared. 5.High customer satisfaction - Your satisfaction is guaranteed when you purchase fromus, if you are not happy with your purchase, please let us know, we'll make it right! Payment: 1.We accept Paypal only. 2.Payment must be made within 7 days after auction ends. 3.Serious bidders only,non-paying bidders will be reported to Ebay after 7 days. Shipping: Economy shipping = No tracking number Standard Shipping = Have Tracking number Buy more than $30 Free add tracking number 1.Please be sure your shipping address is correct. Please include the following Information with your payment. -Your Full Name -Your Full and Accurate Address -Phone Number (Post office requires customer's phone number for International delivery) The undelivery caused by incorrect address will be undertaked by buyer. 2. Please check your shipping address carefully before checkout, it can't be changed if order completed. 3. Orders placed on weekend will be shipped within 2 days.Notification of shipment with tracking number will be sent to buyers. 4.Ship within 1 business day once payment completed. Notification of shipment with tracking No. will be sent to buyer. 5.We offer discounts for combine shipping. Please contact us first if you need combine shipping, and an invoice with discount will be sent to you. 6.Please allow 5 business days for delivery to US destinations on any eBay orders and 14 business days for delivery to any International destinations. We highly recommend our buyer choose priority/expess mail for international delivery which is much more stable. Returns & Warranty: 1. Refunds given only if item DOA and cannot be replaced via PAYPAL . If so, Please contact us with 5 days since you receive the item and and return to us within 30 days from the delivery date for exchange or refund. 2. Return shipping fee is the responsibility of buyer unless the return is a result of our mistake.And all NON-seller mistake returns for refund are subject to 20% re-stocking fee. 3. If you need return, please contact our customer service representative, let us know the detailed problem and send us some pictures for confirmation. Replies: All replies will be sent to your email box, if you don't get response within 24 hours (Sat. & Sun. excluded) please check your eBay My Messages in case that our emails will be filtered automatically by your settings. Feedback: 1.If you are dissatisfied for any reason, please donot be quick to leave negative/neutral feedback or open case. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. 2. If you are satisfied with the product you received,please leave us positive feedback and 5 scores DSR. Work Time:Monday thru Saturday Copyright © 2016 2013santic. All rights reserved. Desktop Mobile

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