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220 ohm resistor |
x 2 | |
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27k ohm resistor |
x 2 | |
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2N222 NPN Transistor |
x 2 | |
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Slide Switch DPDT 5mm width |
x 1 | |
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91uF electrolytic capacitor |
x 2 | |
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D5mm Green LED |
x 3 | |
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D5mm Red LED |
x 4 |
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.
Snowman Ornament
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
Attribution-ShareAlike (CC BY-SA) License
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Raspberry Pi 5 7 Inch Touch Screen IPS 1024x600 HD LCD HDMI-compatible Display for RPI 4B 3B+ OPI 5 AIDA64 PC Secondary Screen（Without Speaker）
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