DIY electronics project
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The DIY 20 LED LM358 Sound Level Indicator Equalizer Kit comes with all necessary components to build a real-time sound level display, featuring an on-board microphone and 20 LEDs to visualize audio levels.

The CD4017 is a Johnson decade counter IC in a DIP package with 10 decoded outputs, capable of counting from 0 to 9. Operating from 3V to 15V, it offers low power consumption and reliable performance. Ideal for applications like digital clocks and sequencing circuits, the CD4017 is easy to integrate and widely used in DIY projects and educational electronics.

The NE555 Delay Timer Relay Switch Module offers adjustable time delays for controlling devices, featuring a built-in relay, ideal for automation and DIY electronics projects.
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