Optimus 4-Digit Stopwatch DIY Kit
Price in Sri Lanka

This product is a compact and easy-to-use 4-digit electronic counter module designed for event counting, timing demonstrations, and general-purpose digital display applications. It uses four CD4026 decade counter/7-segment driver ICs to display values from 0000 to 9999 on bright LED displays, making it ideal for both educational and practical use. The module features an onboard 555 timer that generates automatic clock pulses for continuous counting, along with push-buttons controls for pausing and resetting. Its simple design, stable regulated power supply, and clear visual output make it suitable for electronics learners, project builders, and anyone needing a straightforward numerical counter system. 

Key Features

• Pause button to temporarily stop the clock
• Reset button to quickly return to 0000
• 4-digit display that counts up to 9999
• 555 timer gives steady clock pulses for accurate counting
• Works on a stable 5V supply with the 7805 regulator
• Dimensions: 8.6cm x 5cm 

Typical Applications

• As a digital stopwatch
• Timing experiments or activities
• DIY electronics projects requiring a simple counter
• Training and educational kits for learning digital electronics and counters