Price: $8.99
(as of Jun 03,2023 06:42:30 UTC – Details)
Pulse generator and external elements by NE555 multivibrator, when you press the button S1 when Q1 turns on, the output pulse NE555 3 feet, then five turns the output CD4017 output high, resistors and transistors by different combination, can drive seven LED light to indicate the number of points 1-6 points
Note:
Manual measurement, with small error. Please check size in detail before purchase.
Real colors may slightly differ from the pictures, as it depends on specific monitor settings and light brightness.
We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution.
Package Includes: 2Sets
The circuit board adopts FR-4 military grade A material. After repeated welding, the pad is not easy to fall off, and it is not easy to bend.Stable and reliable impedance.
Circuit mainly by the pulse generator and a decade counter circuit.
When a power-up, 7 LED will randomly display a number of points, players press the switch S1,7 all lit LED only after about 7 seconds LED light starts blinking, until finally showed stable points.
Supply Voltage:4.5-5V,Size: 74*35mm (length * width)
