SMD Soldering Practice Kit – NE555 CD4017 Rotating LED Board
SMD Soldering Practice Kit – NE555 CD4017 Rotating LED Board
LOTHYE SMD Soldering Practice Board Kit – NE555 & CD4017 Rotating Flashing LED Circuit
Take your electronics skills to the next level with this comprehensive DIY SMD Component Soldering Practice Kit. Designed for electronics enthusiasts, students, hobbyists, and circuit repair learners, this dual-board kit delivers hands-on SMT soldering experience with real-world circuit components and professional-grade PCB construction.
⚠️ Please Note: This kit is intended for individuals with prior circuit assembly experience. We guarantee the product is in perfect condition upon delivery; successful assembly depends on the builder's soldering skills and circuit knowledge. Please read all product details carefully before purchasing.
Made in Mainland China.
What's Included
This kit contains two practice boards, each targeting different skill levels and component types:
Board 1: Rotating LED (Running Water Lamp) Practice Board
- Board Size: 89 × 58 mm | Thickness: 1.6 mm
- International standard PCB with all tin-plated pads
- High-strength, fireproof, and anti-drop material — disassembles and reassembles repeatedly
- Left and right side columns feature SMD component welding practice zones, each with dedicated test points
- Central circuit is a running water (sequential) LED lamp circuit built around the CD4017 decade counter and NE555 timer IC — fully functional after correct assembly
- Working voltage: 3V to 12V DC
- Reverse side includes a handy component ruler and PCB trace reference examples for design study
- Note: Back-side symbols are for reference only — no soldering required on the back, and back-side components are not included.
Board 2: HKT002 Full-Process SMD Training Board
- Board Size: 70 × 57 mm | Thickness: 1.6 mm
- FR-4 substrate with blue solder mask and fully tin-plated pads
- High-strength, fireproof, anti-drop construction — suitable for repeated assembly practice
- 149 SMD components across 10 component categories, with 129 pieces to be soldered and 444 solder joints
- Matches competition-level circuit board standards — ideal for skills assessments and training programs
- Corresponding test points provided for each component section for easy verification
- Includes LQFP44 IC package for advanced SMT package practice
Why Choose This Kit?
- ✅ Dual-board set — beginner LED circuit + advanced full-process competition board
- ✅ Realistic SMD components — resistors, capacitors, diodes, ICs, and more
- ✅ Professional PCB quality — tinned pads, FR-4 material, clear silkscreen labeling
- ✅ Functional output — complete the LED board correctly and watch it light up!
- ✅ Test points throughout — troubleshoot and verify each section with ease
- ✅ Great for education — schools, maker spaces, technical colleges, and self-learners
Technical Specifications
| Feature | Rotating LED Board | HKT002 Board |
|---|---|---|
| Board Size | 89 × 58 mm | 70 × 57 mm |
| PCB Thickness | 1.6 mm | 1.6 mm |
| Material | International Standard PCB | FR-4 Tinned |
| SMD Components | Common SMD types | 149 (10 categories) |
| Solder Joints | Multiple practice zones | 444 |
| Operating Voltage | 3V – 12V DC | N/A (training board) |
| Key ICs | NE555, CD4017 | LQFP44 package |
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Frequently Asked Questions
Q: Is this SMD soldering practice kit suitable for beginners?
A: This kit is best suited for individuals who already have some experience with circuit assembly and soldering. The Rotating LED board is more approachable for intermediate beginners, while the HKT002 board with 149 SMD components and 444 solder joints is designed for advanced practice. We recommend having basic soldering tools and circuit knowledge before starting.
Q: What tools do I need to assemble the SMD soldering practice board?
A: You will need a fine-tip soldering iron (ideally temperature-controlled), SMD-compatible solder (0.3–0.5 mm recommended), flux, tweezers, and a multimeter for testing. A magnifying glass or microscope is also highly recommended for working with small SMD components like the LQFP44 IC package.
Q: Does the Rotating LED board actually light up after assembly?
A: Yes! Once the NE555 timer and CD4017 decade counter ICs are correctly soldered along with the LED components, the central circuit will produce a sequential running light effect. Simply power it with a 3V to 12V DC supply to see it in action.
Q: Are the components included or do I need to purchase them separately?
A: This is a kit that includes the PCB boards and SMD components for the front-side circuit. Please note that components printed on the back side of the Rotating LED board are for reference only and are NOT included — no soldering is required on the back.