Entertain your trick-or-treaters with one or more of the blinking-eyes board. Place in the bushes, shrubs or dark area to create the effect of a small creature watching you.

The two LEDs are normally "on" and periodically flick off. The "on" time is adjustable from about 1 second up to 5 seconds. It really does look like something is watching you! The LED spacing can be adjusted to create an effect of creatures of varying size.

Place three or more in an area to create an even more spectacular effect. Adjust each board to blink at a different rate for a truly eerie experience.

Educational too! The board is operated by a popular 555 timer chip operating in "astable" mode. The adjustable potentiometer and a capacitor act as a RC time base to determine the 'on' time of the circuit. Once that timer triggers, a discharge event happens through the capacitor and a second resistor (not adjustable) of smaller value to breifly turn ff the LEDs and creating a 'blink' effect. For electronics teachers, this board makes the perfect and inexpensive theory of operation item for classroom use. Available here fully assembled but we can create a partially assembled kit for you as well. Please contact us of you are interested.

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