DIY Adjustable Speed NE555+CD4017 Running LED Light Soldering Project - UK Post

Product Description

DIY Adjustable LED Lamp Running Water Style

Specification:

Kit Name: NE555+CD4017 Water Lamp Kit
Power supply voltage: 2.5--14.5V
PCB size: 5.4cm*2.1cm
PCB thickness: 1.6mm

This kit is mainly composed of a clock generation circuit and a decimal counter circuit. It is a self-excited multi-vibrator with NE555 as the core. The power supply charges the capacitor C1 through R2, R3, and R4. When C1 starts to charge, the 2-pin of NE555 is still in Low level, so pin 3 of the output terminal is high level. When the power supply is charged to C1 to 2/3 of the power supply voltage through R2, R3, R4, the level of pin 3 of the output terminal changes from high to low, and the internal discharge tube of NE555 is turned on. , Capacitor C1 is discharged through R4, R3, NE555 pin 7, until the voltage across C1 is lower than 1/3 of the power supply voltage, NE555 pin 3 level changes from low level to high level. C1 is charged again, This cycle forms oscillations. The charging time is: 0.695(R2+R3+R4)C1, and the discharging time is: 0.695(R4+R3)C1. Adjusting R4 can control the output frequency of the oscillator. The clock oscillation signal of NE555 is continuously added to pin 14 of CD4017. There are 10 LEDs connected to the 10 output terminals of CD4017. When the 10 output terminals of CD4017 generate high level in turn under the action of the clock signal, D1--D10 will be lit in sequence, thus forming the effect of running water lights.

Adjusting R4 can adjust the flow speed of the LED light.

Information:

A circuit diagram is included but it is probably easier to use the photos as your guide as to which components go where on the PCB.

There is a demonstration video on this listing

There is also a tutorial assembly video available on YouTube:

https://www.youtube.com/watch?v=Jra0rFpwy1o

Please Note:

We can only guarantee that the products are in good condition on delivery and cannot guarantee 100% success after assembly. The assembly of the product requires the user to have some basic soldering skills

Be careful not to overheat any of the components or the printed circuit board connection points as this can cause faults to occur

Please see our store for a range of DIY soldering projects and other cool stuff!

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