Components

	220 ohm resistor	x 2
	27k ohm resistor	x 2
	2N222 NPN Transistor	x 2
	Slide Switch DPDT 5mm width	x 1
	91uF electrolytic capacitor	x 2
	D5mm Green LED	x 3
	D5mm Red LED	x 4

Description

Snowman Ornament

This project utilizes a basic circuit, the astable multivibrator to flash green and red LEDs on the charging and discharging of the two capacitors. To have a faster frequency lower the capacitance and inversely for a lower frequency blink. The slide switch is used to easily turn the ornament on or off instead of disconnecting a 9V battery. Through testing it was found that the max amount of green LEDs could be 3 and 4 red leds, of course there are ways to optimize this.

Download Gerbers

Nov 29,2019

801 views

Snowman Ornament

A snowman shaped ornament to hang on the tree, uses a simple astable multivibrator to blink red and green LEDs using a 9V battery for power.

801

8.50 (1)

Published: Nov 29,2019

Download Gerber file 6

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