Pengu

Pengu-PCB

Using an Astable Multivibrator to light up different LEDS automatically, the LEDS as the eyes oscillate and flash after one another (Like they are winking)

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The Circuit

The Main components in my circuit includes 6 resistors, 2 capacitors, 2 transistors, and 8 LEDS. The circuit itself is basically an Astable multivibrator which is what causes the oscillation to occur. I originally intended to create a seperate Bistable multivibrator, however it did not work as expected so I connected the components from the bistable to create one big Astable circuit. Because of the Astable circuit type, it causes the LEDS to flash one after another in a pattern. An observation I made was that the pattern for the bottom LEDS can also swap if we were to reroute the wires to the opposite collector which was interesting to me.

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The Schematic

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Falstad Circuit link

I created the circuit using Falstad. Feel free to try it out!

https://is.gd/EEGnGU

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PCB Design

I chose to convert my Circuit into the design of a penguin. I used the main two LEDS part of the Astable circuit as the eyes for the penguin, and the other LEDS I attached as arms.

Front of the PCB-

Back of the PCB-