How To: Hungry for a Light Snack? Try Making These Gummy LEDs (aka Nerd Candy)
LEDs have slowly become the standard for DIY lighting projects because they consume less power and last way longer than regular light bulbs do. Light-emitting diodes have no filament, meaning they generate their light solely by the movement of electrons in a semiconductor material.Because of their efficiency and versatility, we see them everywhere: from clocks and calculators to cars and traffic lights. So why is it that when I see some LEDs, I completely disregard their usefulness and instead think of how much they look like candy? Image via accustrata.com These specific LEDs, which sit on the smaller side of the spectrum, look like some type of gummy. The fact that LEDs have a wide range of colors doesn't help either. If only I could find out what it is about the LEDs in particular that makes them look so yummy.Hmmmmm.WAIT. I GOT IT! Image via thecampuscompanion.com I knew there had to be a direct link. The small LED lights look exactly like DOTS, the vegan gum drops that have been in circulation since the mid-1940s. A few toothpicks and a box of DOTS and you've got an edible LED!If that's not geeky enough, you can always check out this tutorial by Adafruit's Becky Stern, which teaches you how to make your very own edible LEDs from molds. Image via adafruit.com Check out the video to watch Becky go through the process step by step, or scroll down to see a breakdown. Please enable JavaScript to watch this video.
You'll need the following tools and supplies for the first half of the recipe:LED lights Mold box Glue Food-safe silicone Scale Rubber gloves The first step is building a mold box (from any materials you have) that can fit in you freezer. Make sure the box is sealed tightly with glue, so that no mold will leak out of it. Once it's built, you'll want to place the LED lights all across the inside of the box. Image via adafruit.com Then you'll put on the gloves follow the instructions for the food safe silicone you're making. Get it mixed up as quickly as you can—the mold can start to harden in no time. Once the mold is prepared, pour it into the mold box and let it distribute evenly. Image via adafruit.com Check the mold box for any leaks. If it's fine, let it cure for 24 hours. The next day, you can break apart the mold box take out the silicone mold. You'll then want to bake the mold for 4 hours at 212°F, then wash it with regular dish soap. Image via adafruit.com Once you're done with this, you can start on the second (and more fun) half of the project. For this part, you'll need the following:Ingredients:3 packets gelatin powder 1 box Jell-O (any flavor) 2 teaspoons Ascorbic acid powder (or vitamin C tablets, crushed) 1/3 cup cold water Tools/parts:2 cup stovetop-safe glass measuring/mixing cup Silicone spatula/wooden spoon Deep pan for double boiler Plastic wrap Candy syringes 3D printed legs (any clear type of toothpick) First, pour 1/3 cup of cold water into a mixing cup and mix in the gelatin slowly. Wait until the solution becomes almost like Play-Doh. Put plastic wrap over the mixing cup and let it sit for 10 minutes. Image via adafruit.com Turn on the heat for your double broiler and add the red gelatin to the mixing cup. Next, add a teaspoon of acerbic acid, in order to give it a bit of a sour taste. Make sure you add it at the end, because the heat can change the taste quickly. Image via adafruit.com Put it in fridge quickly. Once it firms up, put the solution in the mold with the candy syringes and place whatever you'd like as the legs for each LED. Becky used 3D printed legs but you can use something like a clear toothpick, since not many people have access to 3D printers. Image via adafruit.com Pop the mold into the freezer for a few minutes so that it's easy to take out the LED's and you're done! Image via adafruit.com You can find more details and a link to download the model for the 3D printed legs over on the Adafruit tutorial.
Images by The Campus Companion, Accustrata
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