Plplaaoo 2 PCS Water Flowing Light Module,NE555 & CD4017 LED Chaser Kit, Pre-Assembled DIY LED Running Light Electronics Project Circuit Board for STEM Learning & Hobbyist Circuits(2.13 x 0.83in)

Specification:Item Type:Water Flowing LightVoltage:2.5~14.5VSize:5.4 x 2.1cm / 2.13 x 0.83in Thickness:1.6mmPackage List:2 x Module

• [Water Light Display] This Water Flowing Light Module creates a smooth cascade effect as ten LEDs light up one after another, mimicking the natural flow of water. The visual sequence offers an engaging display for electronics projects, classroom demos, or hobbyist setups without needing any programming or complex setup.
• [NE555 Timing Core] At the heart of this circuit sits the classic NE555 CD4017 Water Flow Effect Light, where the NE555 chip acts as a self-excited multivibrator to generate steady clock pulses. This foundational component handles the timing that drives the entire lighting sequence through its precise oscillation behavior.
• [CD4017 Counter Logic] The LED Chaser Kit uses a CD4017 decade counter to distribute clock signals across ten output pins, lighting each LED in turn. This digital logic chip ensures clean, sequential activation of the LED array, creating the characteristic running light pattern that defines this type of electronic display.
• [Speed Control Feature] An onboard potentiometer (R4) lets you dial in your preferred animation pace for this Electronic Circuit LED Running Light. Turn it slowly for a gentle ripple effect or speed it up for a more dynamic chase—no coding or extra tools needed to personalize the visual rhythm to your project's mood.
• [Oscillator Timing Details] This DIY Electronic Circuit LED Chaser Kit uses a charging cycle of 0.695(R2+R3+R4)C1 and discharging at 0.695(R4+R3)C1, where R4 directly controls the oscillator’s output frequency. The NE555’s clock signal continuously feeds into pin 14 of the CD4017, setting the pace for the entire LED sequence through this RC timing relationship.