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Sound Synchronized LED Video Tutorial
It is possible to synchronize the LEDs so that the speakers continue to play loudly while the LEDs are not always illuminated during music playback. The individual has a solid understanding of electrical concepts and is seeking a method to...
Bicolour LED flasher circuit
This circuit is similar to various published flasher circuits that utilize the IC 555 as a free-running multivibrator. The primary distinction is in the method of flashing bi-color LEDs. When the output at pin 3 of the IC 555 goes...
Wave Joule Thief circuit
A series of LEDs that turn on and off in a precise sequence, creating a calming and hypnotic effect. Various LED chaser, scanner, and sequencer circuits exist, utilizing discrete transistors, logic integrated circuits (ICs), or microcontrollers. However, a common limitation...
5 DOT LED LINEAR LEVEL METER DRIVER
The KA2284 is a monolithic integrated circuit designed for 5-dot LED level meter drives with a built-in rectifying amplifier. It is suitable for both AC and DC level meters, such as VU meters or signal meters.
The KA2284 integrated circuit is...
Solar LED light schematic
Purchase a 1W white LED and utilize a mobile phone battery to create a small lamp. A lampshade can be made from a glass-like milky white plastic bottle. The LED emits light through a radiating plate, which has two leads...
LED Chaser
General There are many 9V chaser circuits that seem to waste about 7V when driving LEDs that are only about 2V. This project is unique, because it uses only two inexpensive alkaline battery cells totaling 3V for power. Since most...
120 Volt 4 LED Light Circuit Schematic Diagram
If the AC supply is 220 volts, which resistor should be replaced and with which one? Since 220V is twice that of 110V, the resistance value needs to be doubled accordingly. It is suggested to replace the 9.1kΩ resistor with...
LED Series Resistor Calculator
All LEDs require some form of current limiting. Connecting an LED directly to the power supply will burn it out almost instantly. Overdriving, even briefly, will significantly reduce its lifespan and light output. Fortunately, driving a single or a string...
LED Hat
This unique hat is a product of a procrastination project. During the study break for final exams, an invitation was received for a friend's hat-themed birthday party. With little else to occupy time (aside from studying), the decision was made...