LED message display schematic

This simple Christmas LED lights decoration circuit allows for the creation of an 18 LED flasher to adorn a Christmas tree. The circuit incorporates white, blue, and red LEDs that flash in a festive pattern. The circuit is designed to operate...

Circuit Diagram for a 12V LED Lamp

The color of the LED makes a significant difference. The type and size of the LED, such as 3mm or 5mm, and the power source are crucial factors to consider. More information is required for accurate calculations. A basic electrical...

White LED Lights Circuit

This white LED floodlight illuminates your porch with cool white light. The circuit features a simple and energy-saving design, with a low current consumption. The LED floodlight circuit typically consists of a power supply, a control circuit, and the LED array...

1.5V Light emitting diode flasher circuit

With a 1.5V battery supply, the integrated circuit LM3909 can drive the light-emitting diode NSL5027. The 300μF electrolytic capacitor acts as a timing capacitor, which limits the flash speed to approximately 1Hz. The circuit utilizes the LM3909, a popular LED flasher...

10 Step LED Circuit

Each time switch S1 is closed the count on the CD4017 advances by 1 step and the corresponding LED turns on. When the maximum count plus 1 is reached for each circuit the cycle is restarted and repeats. The circuit utilizes...

LED Stroboscope with EG1951-ND

The rotary switch is available for $5.00USD as of 2003 from DigiKey under part number EG1951-ND or EG1952-ND. It is a real pain to operate this circuit without a proper switch. You can put multiple 4017 ring counters in series...

KIT CAR Lights circuit

This custom mod gives your computer the personality of KITT, the computerized car from Knight Rider TV fame. The project is a light display which imitates the dot in KITT's hood. It looks like the scanning eye of the car's...

Bar-Mode Lights Sequencer

The terminal of R7, indicated by an arrow, must be connected to the desired output pin of IC2 or IC3 to select the number of LEDs or clusters that will form the bar. For instance, to drive seven LEDs or...

7Segment Common LED UV Exposure Box

7-Segment Common LED UV Exposure Box Circuit Diagram. Features: Utilizes Stan Ocker's circuit design, employing a PIC16F84 microcontroller to count and display the time. The 7-Segment Common LED UV Exposure Box Circuit is designed for applications requiring precise timing and display...