64/256 LED SMD Dot Matrix Advertising Screen Welding Soldering Practice DIY Kit

Description

64/256 LED SMD Dot Matrix Advertising Screen Welding Soldering Practice DIY Kit. This kit features a display unit composed of 64 0805 surface-mount LEDs. Using row-column scanning, it can display any 64-pixel character, such as numbers. Upon power-up, it displays: vertical row-by-row illumination → full-screen illumination with 2 flashes → horizontal row-by-row illumination → sequential countdown display of characters 9-0 for advertising. Visit store Items for sale About us Product Details Product Features: 1. Innovative circuit design with strong educational appeal, ideal for introductory soldering practice and hands-on training. 2. Double-sided fiberglass tin-plated board made of high-strength material, supporting repeated disassembly and reassembly. 3. Pre-programmed microcontroller for seamless teaching and competition use. 4. Available in 64/256 LED configurations, capable of displaying characters and patterns. 5. Comprehensive component selection with surface-mount technology enhances hands-on and electronics practical skills. Product Specifications: Supply Voltage: DC 4-5V Display Color: Red Dimensions: 64 LED: 60*49mm 256 LED: 96*85mm Circuit Overview: Model 1: 64 LED (88 Components) Advertising Display Soldering Practice Kit This kit features a display unit composed of 64 0805 surface-mount LEDs. Using row-column scanning, it can display any 64-pixel character, such as numbers. The kit includes a pre-programmed microcontroller. Upon power-up, it displays: vertical row-by-row illumination → full-screen illumination with 2 flashes → horizontal row-by-row illumination → sequential countdown display of characters 9-0 for advertising. This sequence repeats. To modify the display content, omit soldering the included microcontroller. Instead, inject control signals via interface JP1 to display custom content. (Refer to our store's 8x8 dot matrix documentation for compatibility; the microcontroller interface is identical. This interface requires separate procurement and is not included in the kit.) The circuit includes 64 SMD LEDs, 8 row driver transistors, 8 current-limiting resistors, 2 serial expansion chips, 1 microcontroller chip, 1 SMD electrolytic capacitor, and 4 SMD high-frequency capacitors—totaling 88 components and 202 solder joints. Model 2: 256 LED (300 Components) Advertising Screen Soldering Practice Kit This kit features a display unit composed of 256 0805 surface-mount LEDs. Using row-column scanning, it can display any 256-pixel character, such as Chinese characters. The kit includes a pre-programmed microcontroller. The startup sequence is: row-by-row illumination → full-screen illumination with 2 flashes → sequential display of the character advertisement “You're the best” → heart symbol flashing 3 times. This sequence repeats. To modify the display content, omit soldering the included microcontroller. Instead, inject control signals via interface JP1 to display custom content. (Refer to our store's 16x16 dual-color dot matrix documentation for compatibility—the microcontroller interface is identical. This interface requires separate procurement; it is not included in the kit.) The circuit includes 256 surface-mount LEDs, 16 row driver transistors, 16 current-limiting resistors, 4 serial expansion chips, 1 microcontroller chip, 1 surface-mount electrolytic capacitor, and 6 surface-mount high-frequency capacitors. Total: 300 components, 678 solder joints. Circuit Principle: The control core is microcontroller U1. It continuously transmits row scan data to U2 and display data to U3 via pre-programmed code, thereby controlling the display to show patterns in a regular sequence. Installation Notes: All components must be mounted flush with the PCB surface. Pay attention to the polarity orientation of integrated circuits, LEDs, transistors, and electrolytic capacitors. The circuit board provides test points J1-J5 for extended applications such as waveform measurement and voltage testing. Operating voltage: 4-5V. As the kit primarily consists of LEDs and features a relatively simple circuit, assembly is typically straightforward. The microcontroller program is pre-programmed; results appear immediately after soldering. Source code is not provided. Product List: 1X Soldering Practice Kit Note: This product is a DIY kit, not a finished product. This soldering project requires basic electronics knowledge and hands-on skills. Payment Method Shipping Policy Returns & Refund Policy Feedback Payment Method EBAY Managed Payment. But we only Accept your Ebay Address , please Make sure it's 100% right. Payment must be received in 5 business days of auction closing. Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order. Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched. Shipping Policy 1. We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand. 2. Orders will be processed instantly and dispatched within 1-3 business days except hoilday, so we do NOT accept any email/message note after you place orders. 3. All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund. Returns & Refund Policy All package need to wait 30 days (US only n eed 7-10 days) ,Please take care it.Less than 30 days,we can't take a refund. If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please keep in touch with us and double check the return address before you return it. If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item. Feedback We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important to us. We request that you keep in touch with us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.