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DIY smartphone notification light: Repurpose old earphones with a simple LED hack!

Learn how to create a simple DIY LED notification light for your smartphone by repurposing an old earphone jack and an LED ...
Hackaday

Forgetfulino Puts Back Up Of Source Inside The Binary

How often have you pulled out old MCU-based project that still works fine, but you have no idea where the original source ...
IEEE

Enhancing Light Extraction Efficiency in Micro-LEDs via Metal Photonic Crystals in the Passivation Layer and Air Photonic Crystals on the n-GaN Side

Abstract: Photonic crystals (PhCs), as a type of metamaterial, have attracted significant attention due to their ability to control light propagation to enhance the light extraction efficiency (LEE) ...
Circuit Digest

Build a Simple Optocoupler Tester Circuit for Fault Detection

Testing for failure with a multimeter is only partially effective, whereas a dedicated optocoupler testing circuit provides clear results in just seconds. For related tutorials and step-by-step build ...