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DIY Random LED Lucky Draw Soldering Kit, Electronic Roulette Dice Circuit Module with Slow-Down Light Effect for Beginner Hobbyist STEM Handmade Experiment

DIY Random LED Lucky Draw Soldering Kit, Electronic Roulette Dice Circuit Module with Slow-Down Light Effect for Beginner Hobbyist STEM Handmade Experiment

$9.94 USD
$9.94 USD
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About this item

  • Working Voltage: DC3.5~6V; PCB Size:48×51×1.6mm; Equipped with 10pcs round LED arranged in circular layout; Note: The kit only comes with loose electronic components, NO power supply and connecting wires included, users need to finish soldering & wiring by themselves.
  • After pressing the button, all LEDs cycle rapidly just like flashing together; When releasing the button, capacitor discharge makes pulse frequency gradually drop, LED moving speed slows down step by step and finally stays on one fixed LED. If the final lit LED matches your pre-guess, you win the lottery.
  • Core circuit consists of NE555 multivibrator pulse generator and CD4017 decade counter chip; R2 controls LED moving speed, C2 sets delay stop time, helps learners master oscillating circuit & sequential logic circuit principle during soldering practice.
  • Clear silkscreen marker on PCB pad position, back copper trace layout is distinct; Marking for diode, electrolytic capacitor, IC notch, LED positive/negative pole are all printed on board to reduce wrong soldering rate and lower assembly difficulty for entry-level learners.
  • Ideal teaching accessory for middle/high school electronic basic course, electronic craft training and soldering skill contest; Finished module can be used as electronic dice, party lottery machine, guessing number game toy for family & club entertainment, onboard battery holder enables portable use without extra power cord.

Overview

  • Brand: Aueabc
  • Display Type: LED
  • Included Components: Dual power option: DC3.5~6V external DC / 2×AA(No.5) dry battery via onboard battery holder; PCB Size:48×51×1.6mm; 10pcs red LEDs arranged in circular layout; Kit contains full spare components + pre-connected AA battery holder with wires, no battery included, need manual soldering assembly. Dual power option: DC3.5~6V external DC / 2×AA(No.5) dry battery via onboard battery holder; PCB Size:48×51×1.6mm; 10pcs red LEDs arranged in circular… See more
  • Number of Items: 1
  • Number of Packs: 1

Low stock: 10 left

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Reviews

  • ⭐⭐⭐⭐⭐

    Hannah Miller — Seattle, Washington
    I ordered several science activity supplies for projects at home. The product descriptions made it easier to compare the available options, and everything fit neatly into our learning space. Stemora made finding tools for hands-on activities feel simple and organized.

  • ⭐⭐⭐⭐⭐

    Daniel Foster — Austin, Texas
    I found a useful selection of electronics and robotics accessories for a beginner project. It was convenient to browse related components in clearly organized categories. I would consider shopping here again when planning another maker activity.

  • ⭐⭐⭐⭐⭐

    Lauren Bennett — Denver, Colorado
    The measurement and observation tools I selected worked well for the classroom activities I had planned. I especially appreciated being able to review the product details before ordering and choose items that matched the lesson requirements.

  • ⭐⭐⭐⭐⭐

    Jason Parker — Portland, Oregon
    I purchased a few storage items and small tools for organizing my maker workspace. The products helped keep components, wires, and project materials easier to sort and access. The overall shopping experience was straightforward and convenient.

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FAQ

What types of products does Stemora offer?


Stemora offers supplies for science experiments, microscopy, biology learning, measurement, laboratory organization, electronics, robotics, coding education, 3D printing, maker projects, and classroom activities. Available products and specifications may change over time.

Are Stemora products suitable for children?


Recommended ages vary by product. Please review the product description, manufacturer guidance, included warnings, and required skill level before purchasing. Products containing small parts, tools, electrical components, glass, or chemicals may not be suitable for young children.

Is adult supervision required?


Adult supervision is recommended for children and students, especially when using electrical components, sharp tools, heated equipment, glassware, small parts, or experiment materials. Customers are responsible for following all product instructions and safety precautions.

Can these products be used at home and in classrooms?


Many products may be suitable for classrooms, home learning, science projects, maker spaces, and hobby activities. Suitability depends on the specific product, learning environment, user experience, and intended activity.

How can I check what is included with a product?


Please review the product title, description, specifications, images, package quantity, and included-components section before ordering. Items shown for demonstration or scale in product images may not always be included.

How do I know whether an electronic or robotics part is compatible?


Check the listed dimensions, voltage, connector type, board compatibility, operating requirements, and supported platforms. Compatibility is not guaranteed unless it is specifically stated on the product page. Contact us before ordering if you need clarification.

When will I receive tracking information?


Tracking information is generally provided within 3–5 business days after an order is confirmed. In some cases, processing may take approximately 7–8 business days. Delivery may require an additional 4–5 business days after tracking becomes available, depending on the carrier and destination.

Why did my order arrive in separate packages?


Products in the same order may be shipped from different fulfillment locations. As a result, items may arrive separately and have different tracking numbers. You will not be charged additional shipping fees solely because an order is divided into multiple packages.

Can I change or cancel my order?


Contact us as soon as possible at vaioamaonaoak@gmail.com. We will try to assist, but changes or cancellations cannot be guaranteed once an order has entered processing or has been shipped.

What should I do if an item arrives damaged, defective, or incorrect?


Contact us promptly at vaioamaonaoak@gmail.com with your order number, a description of the issue, and clear photographs of the item, packaging, and shipping label. Please retain the product and original packaging while we review your request. Eligibility and available resolutions are subject to our Return & Refund Policy.

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