Latest LEDs Articles and Videos

ICs such as the BCR401U provide high-quality control of LEDs for applications that require something better than the…

ICs such as the BCR401U provide high-quality control of LEDs for applications that require something better than the typical series-resistor arrangement.

In this teardown, we will look at the internals of a motion-activated light which contains its own solar charging system.

In this teardown, we will look at the internals of a motion-activated light which contains its own solar charging system.

Biometric security comes standard for most smartphones. Can IR LEDs keep iris scanning a viable option?

Biometric security comes standard for most smartphones. Can IR LEDs keep iris scanning a viable option?

Let’s take a look at how to make your LED array more robust; we’ll use the PLEDxN series from Littelfuse as an example.

Let’s take a look at how to make your LED array more robust; we’ll use the PLEDxN series from Littelfuse as an example.

The Amazon Kindle Fire tablet is a 7" color tablet. This Teardown Tuesday opens one up and looks inside.

The Amazon Kindle Fire tablet is a 7" color tablet. This Teardown Tuesday opens one up and looks inside.

The AS7261 is a highly integrated sensor that provides optical measurements via a digital interface.

The AS7261 is a highly integrated sensor that provides optical measurements via a digital interface.

Researchers have developed double-heterojunction nanorods which can be biased to both send and receive light—in other…

Researchers have developed double-heterojunction nanorods which can be biased to both send and receive light—in other words, a device that is both an LED and solar cell, capable of emitting and absorbing light.

In this teardown, we look at the Hiluckey solar charger with an inbuilt lithium-ion battery.

In this teardown, we look at the Hiluckey solar charger with an inbuilt lithium-ion battery.

See what's inside a sound-activated LED for use in DJ environments.

See what's inside a sound-activated LED for use in DJ environments.

Using a custom framework (RIOT) to control an LED with a networked computer.

Using a custom framework (RIOT) to control an LED with a networked computer.

LED ring flashes and lights can be a valuable tool for photographers. In this tutorial, we are going to build our own…

LED ring flashes and lights can be a valuable tool for photographers. In this tutorial, we are going to build our own ring light out of LEDs!

Tracking an infrared light source is not as difficult as you might think; a 14-pin PICAXE, a stepper motor with a driver…

Tracking an infrared light source is not as difficult as you might think; a 14-pin PICAXE, a stepper motor with a driver IC, three phototransistors, and a few other components will do the trick.

When you have multiple LEDs with a common anode or common cathode, can you use just one current-limiting resistor?…

When you have multiple LEDs with a common anode or common cathode, can you use just one current-limiting resistor? Let’s take a look.

Freeze moments in time to easily produce extraordinary close-up pictures with your digital camera, an Arduino, and these…

Freeze moments in time to easily produce extraordinary close-up pictures with your digital camera, an Arduino, and these simple circuits.

In the final installment, we build our light-blade and assemble the electronics into the hilt.

In the final installment, we build our light-blade and assemble the electronics into the hilt.

In part 3, we compile the firmware and build the controller at the heart of the Saber, then do initial testing and diagnostics.

In part 3, we compile the firmware and build the controller at the heart of the Saber, then do initial testing and diagnostics.

In part 2 of the LED saber project, we'll assemble the power and audio systems.

In part 2 of the LED saber project, we'll assemble the power and audio systems.

The brightest blade in the world. Fluid sound effects generated in real time. Any colour, changeable on the fly. If you…

The brightest blade in the world. Fluid sound effects generated in real time. Any colour, changeable on the fly. If you want to know what it feels like to hold a Lightsaber, this project is the closest you can get today.

Recently researchers in South Korea have published their work on a new OLED stack in NPG Asia Materials journal. This new…

Recently researchers in South Korea have published their work on a new OLED stack in NPG Asia Materials journal. This new OLED is not only ultra-flexible but is also extremely efficient. What does this mean for new OLEDs? Are we going to see more OLEDs in products?