LED Calculator DIY Kit – 51 Microcontroller Soldering Practice

$29.16 $35.81

LOTHYE LED Digital Calculator DIY Electronic Kit – 51 Microcontroller Soldering Practice

Build your own fully functional LED calculator from scratch! This hands-on DIY electronic kit is designed for electronics enthusiasts, students, and hobbyists who want to develop real-world circuit assembly and soldering skills. Powered by an STC8G1K17 + TM1638 chip combo and housed in a sleek PS transparent plastic shell, this kit delivers a rewarding build experience and a genuinely useful finished product.

⚠️ Please Note: This kit is intended for buyers with prior circuit assembly experience. We guarantee all components are in good condition before shipment, but successful assembly depends on the builder's skill level. Please read all instructions carefully before beginning. Batteries are NOT included.

Made in Mainland China.

Key Features

Multi-Function Calculator: Supports addition, subtraction, multiplication, division, square root, decimal-to-hexadecimal conversion, hexadecimal-to-decimal conversion, five-ring resistance conversion, and four-ring resistance conversion.
8-Digit LED Display: 7-segment, 8-digit LED digital tube display — available in red, green, or blue display styles.
51 Microcontroller Platform: Built around the STC8G1K17 MCU with TM1638 display driver — ideal for learning embedded systems and circuit design.
Compact & Portable: Dimensions: 121mm (L) × 73mm (W) × 28mm (H) / 16mm thin profile.
Low Power: Powered by 2× AAA (No. 7) batteries (3V total) — batteries not included.
Transparent Shell: PS transparent plastic enclosure lets you see the internal PCB — great for learning and display.
Perfect for Training: Ideal for school electronics labs, soldering practice, STEM education, and DIY hobbyists.

Specifications

Brand	LOTHYE
Chip	STC8G1K17 + TM1638
Display	8-digit LED digital tube (7-segment)
Display Colors	Red / Green / Blue
Power Supply	2× AAA (No. 7) batteries, 3V (not included)
Shell Material	PS transparent plastic
Dimensions	121mm × 73mm × 28mm (16mm thin)
Condition	New
Origin	Mainland China

What's in the Box?

All electronic components for the calculator kit (PCB, chips, resistors, capacitors, buttons, LED tube, shell)
Batteries NOT included

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Frequently Asked Questions

Q: Is this LED calculator kit suitable for beginners with no soldering experience?

A: This DIY microcontroller calculator kit is best suited for individuals who already have some experience with circuit assembly and soldering. While it is a fantastic learning tool for electronics students and hobbyists, complete beginners may find the build challenging. It is strongly recommended to read all instructions thoroughly and practice basic soldering techniques before starting.

Q: What batteries does the LED digital tube calculator kit require?

A: The kit is powered by 2× AAA (No. 7) batteries providing a total of 3V. Please note that batteries are NOT included in the package and must be purchased separately.

Q: What functions does the finished microcontroller calculator support?

A: Once assembled, the calculator supports a wide range of functions including addition, subtraction, multiplication, division, square root calculation, decimal-to-hexadecimal conversion, hexadecimal-to-decimal conversion, five-ring resistance color code conversion, and four-ring resistance color code conversion — making it a highly practical tool for electronics students and engineers.