General LED Information

Build a 555 timer LED beacon circuit. Short flash, long pause. Interactive calculator with schematic, breadboard layout, and BOM.

Build a breathing/fading LED circuit with a 555 timer and transistor. Interactive calculator, smooth animation preview, circuit diagrams.

Build an alternating LED flasher with a 555 timer. Interactive calculator, animated preview, circuit diagrams.

Learn to build a blinking LED circuit with a 555 timer IC. Interactive calculator, animated preview, circuit diagram, and step-by-step guide.

How to Wire a Switch: Basic Connections How to wire a switch is a key skill, and this simple guide shows the basics. Learning this is vital for many electronic projects. Here, we assume you have an LED, a power supply, and a switch. Your goal is to connect all the parts so you can turn your LED on and...

How to Convert mA to Amps (Milliamps to Amps) Quick Answer: To convert milliamps (mA) to amps (A), divide by 1,000. Example: 20 mA ÷ 1,000 = 0.020 A. This guide will show you exactly how to convert mA to Amps. This is also known as converting from milliamps to amps. It is a very easy calculation to do once...

Step-by-step guide to wiring LEDs in parallel. Covers individual resistors per LED, shared resistor risks, current calculations, and power supply sizing. Includes formulas and diagrams.

Beginner guide to wiring a single LED with a current-limiting resistor. Covers the resistor formula (R = (Vs - Vf) / If), power calculations, and a practical car LED wiring example.

Three methods to identify LED polarity on through-hole LEDs: leg length (longer = positive), flat edge on the housing (flat = negative), and internal structure (larger piece = cathode).

How to identify polarity on surface-mount LEDs. Visual guide to cathode markings on 0402, 0603, 0805, and 1206 SMD packages including dots, notches, triangles, and flat edges.