Uploaded December 2015 | Updated September 2026, 40 minutes ago

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Learn the basics of LED (Light Emitting Diode) circuits and how to build your own circuits.

LED voltage chart:
thedoityourselfworld.com/img/Typical-LED-Voltage-And-Current-Requirements.jpg

Current limiting resistor calculator:
ledcalc.com

Resistor color code chart:
diyaudioandvideo.com/Electronics/ResistorColorCodes/E24ResistorColorCodes.gif