Electronic Rock Scissors Paper circuit

Turning analog inputs into multi-switch digital inputs

There is an interest in creating an interactive LED game board or a "Stargate" DHD-type sci-fi prop, where each tile is illuminated from below by either a single white LED or an RGB combination. The goal is to make each...

Led Flasher with a BC547 NPN transistor

This is a novel flasher circuit using a single driver transistor that takes its flash-rate from a flashing LED. The flasher in the photo is 3mm. An ordinary LED will not work. The flash rate cannot be altered by the...

LED Christmas Star

This circuit can be used to construct an attractive Christmas Star. When we switch on this circuit, the brightness of lamp L1 gradually increases. When it reaches the maximum brightness level, the brightness starts decreasing gradually. And when it reaches...

led thermometer pcb

Any LED can be used for D1 - D10; however, blue LEDs require a higher voltage, which may result in them appearing dimmer compared to red, yellow, or green LEDs. If pin 9 of U2 is left disconnected, the circuit...

Single cell (1.5 Volt) LED flasher circuit

The LED is a fascinating component for amateur electronics hobbyists. The primary characteristic of an LED is that it requires a minimum of 3 volts to illuminate. Various circuits have been discovered to drive an LED using a single alkaline...

28 led clock timer

This is a programmable clock timer circuit that utilizes individual LEDs to signify hours and minutes. Twelve LEDs can be arranged in a circular formation to represent the 12 hours of a clock face, while an additional 12 LEDs can...

LED CHASER Sequencer

All LED negatives are connected to the "COM" pad, then through a 220 Ohm resistor to ground. There is no need for additional current limiting resistors, even with supply voltages up to 16 volts. The described circuit employs a simple yet...

simple and cheap dark detecting led

How can an LED be activated in low light conditions? This scenario, often referred to as the "nightlight problem," is applicable in various situations such as emergency lights, street lights, and even computer keyboard backlights. There are numerous solutions available....

one transistor led flasher

This is a one-transistor LED flasher circuit designed to flash a super bright LED. The circuit employs a single transistor as a driver, which receives the flash rate from LED 2, a self-flashing LED. The flash rate can be adjusted...