Add an LED Circuit to your Costume #ElectronicHalloween

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Want to add LED’s to your Halloween costume this year? Check out this incredible easy and informative tutorial from Becky Stern!

Today I’m going to show you how to create a simple yet customizable LED and battery circuit that’s perfect for putting inside your next project. This is a great first soldering project! Follow along with the video to practice your technique.

The most basic LED circuit can be made by sandwiching the legs around a coincell battery. This is also a good way to identify the positive and negative legs of the LED since it will only light up one way. That’s because LEDs are diodes, which allow electricity to flow one way, but not the other. The positive side of the battery should be touching the positive, usually longer, leg of the LED.

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Adafruit electronic halloween dark HAPPY HALLOWEEN! Every day this month we’ll be bringing you ideas and projects for an Electronic Halloween! Expect wearables, hacks & mods, costumes and more here on the Adafruit blog! Working on a project for Halloween this year? Share it with us in the comments below, the Adafruit forums, Facebook, Discord, Instagram or Twitter— we’d love to see what you’re up to and share it with the world (tag your posts #ElectronicHalloween). You can also send us a blog tip! Tune in to our live shows, 3D hangouts with Noe and Pedro, Show and Tell and Ask an Engineer, featuring ideas for projects, costumes, decorations, and more!


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

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