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Project Idea
thumbnail Have you ever seen clothing with built-in lights? This might sound like something out of a science-fiction movie, but electronic textiles (or e-textiles for short) really exist. Instead of using hard surfaces for circuits (like what goes inside your computer or cell phone), e-textiles weave electrical parts like batteries, wires, and lights directly into clothing that you can wear to make the clothing do fun, interesting things like light up, respond to sound, or even serve medical purposes… Read more
Elec_p077
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires special electronic components designed for use with e-textiles. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety No issues
Project Idea
thumbnail Have you ever seen moths buzzing around bright lights at night? What about animals that always crawl into dark places, under rocks or furniture? This type of behavior is called phototaxis — movement toward (or away from) a light source. In this project you will build your own biologically inspired robot critter that mimics this behavior. Basing your design on the popular and simple BristleBot robot, you will make a robot with two light sensors for "eyes" and two motors that help it steer… Read more
Robotics_p012
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Time Required Average (6-10 days)
Prerequisites Some familiarity with electronic circuits and using breadboards will be very helpful, though not required, for this project. Using a soldering iron is also helpful but a work-around is offered in the Procedure.
Material Availability This project requires certain parts from an electronics store or online retailer. See the Materials and Equipment list for details.
Cost Average ($40 - $80)
Safety If you use a soldering iron for this project remember that soldering irons get extremely hot and can cause burns if they touch your skin. They can also become a fire hazard if left unattended. Science Buddies recommends using lead-free solder, especially in homes with pets or small children.
Project Idea
thumbnail Global warming, climate change, melting ice caps—these are all big events that have an impact our environment. What can we do to help reduce the impact? We can reduce, reuse, and recycle. What can cities do to help? Cities can eliminate waste by saving energy. Cities around the world are switching from incandescent traffic signals to LED traffic signals to save energy and money. That's because LEDs are more efficient than incandescent lamps, which means that LEDs produce more light… Read more
Energy_p003
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Time Required Long (2-4 weeks)
Prerequisites Prior experience with using a digital multimeter
Material Availability Specialty items (see Materials list)
Cost High ($100 - $150)
Safety Since this science project deals with electricity, adult supervision is recommended. The LEDs used in this project are used in traffic signals and are very bright. Do not look directly at the LED when it is in operation and be sure to wear your sunglasses. Be sure to wear safety goggles when operating power tools.
Project Idea
thumbnail Do you like playing with squishy play dough or modeling clay? Wouldn't it be cool if you could add lights, sound, or even motion to your play dough creations? In this science project, you will make play dough that conducts electricity, which will allow you to connect lights, motors, and buzzers! This science project is the first in a three-part series on "squishy circuits," which can all be done with the same materials. We recommend doing the science projects in order. Read more
Elec_p073
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires a Squishy Circuits Kit and ingredients to make conductive and insulating play dough. See the Materials and Equipment list for details
Cost Low ($20 - $50)
Safety Ask for an adult's help when using the stove to make the conductive play dough. Never connect the battery pack's terminals directly to each other; this is called a short circuit and can make the batteries and wires get very hot. Do not connect the LEDs directly to the battery pack without using play dough; this will burn out the LEDs.
Project Idea
thumbnail Do you like making things with play dough or modeling clay? Wouldn't it be cool if you could add a bunch of lights to your creations? In this science project, you will make play dough that conducts electricity, and we will introduce you to some new types of circuits so you can add more lights to your artistic creations. This science project is the second in a three-part series on "squishy circuits," which can all be done with the same materials. We recommend doing the science projects in order. Read more
Elec_p074
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Time Required Average (6-10 days)
Prerequisites You should understand the Introduction material in Make Your Play Dough Light Up, Buzz, & Move!—the first science project in the "Electric Play Dough" series—before doing this science project.
Material Availability This science project requires a Squishy Circuits Kit and ingredients to make conductive and insulating play dough. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Ask for an adult's help when using the stove to make the conductive play dough. Never connect the battery pack's terminals directly to each other; this is called a short circuit and can make the batteries and wires get very hot. Do not connect the LEDs directly to the battery pack without using play dough; this will burn out the LEDs.
Project Idea
thumbnail LEDs (light-emitting diodes) are electronic components that convert a portion of the electrical energy flowing through them into light. How does the intensity of the light produced vary with the current flowing through the LED? To find out, you'll build some simple circuits to vary the current flowing an LED. You'll also build a simple light-to-voltage converter circuit to measure LED output. Read more
Elec_p037
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Time Required Short (2-5 days)
Prerequisites Understanding of Ohm's Law.
Material Availability Specialty items
Cost Average ($50 - $100)
Safety No issues
Project Idea
thumbnail Wouldn't it be nice to avoid those nasty electric shocks you get after you've walked around on carpet and then shake a friend's hand, or all those crazy flyaways you get after brushing your hair? These are caused by static electricity. In this science fair project, you will build a super-sensitive charge detector to investigate the positive and negative electric fields created by static electricity. The detector can sense invisible electric fields, so try this science fair project to avoid the… Read more
Elec_p050
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Time Required Short (2-5 days)
Prerequisites You should be familiar with the concepts of atoms, electrons, and voltage. Familiarity with building circuits with a breadboard is helpful, but not required.
Material Availability Readily available
Cost Average ($40 - $80)
Safety No issues
Project Idea
thumbnail Imagine telling your friends about your latest science project: using a battery to make a light turn on. You might get some blank stares...sounds a little boring and basic, right? Now tell them you will do it with a potato! Yes, you can actually turn fruits and vegetables into electric power sources! Batteries power many things around you, including cell phones, wireless video game controllers, and smoke detectors. In this science project, you will learn about the basics of battery science and… Read more
Energy_p010
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires specialty electronics items. A Science Buddies kit is available. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Do not eat the potatoes after they have been used as batteries.
Project Idea
thumbnail While you are probably quite familiar with battery-powered flashlights and watches, did you know there are motion-powered electronic devices—including some flashlights and watches—that can seemingly run forever without needing new batteries? The secret involves using magnets that generate electricity when they move around near a metal wire. In this science project, you will build your own simple motion-powered electrical generator that can power a series of tiny lights. Read more
Energy_p009
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires some specialty electronic components. A kit is available from the [# Link Name="Energy_p009.16" Value="HtmlAnchor" #]. The Time Required estimate includes time for gathering specialty materials. The actual project only takes 1 day.
Cost Average ($40 - $80)
Safety

Neodymium magnets are very strong and can pinch your fingers when they come together. You should keep them away from pets and small children because they can cause serious harm if ingested. As with any magnet, you should keep them away from computers, cell phones, and credit cards.

Adult supervision is required when using a hobby knife.

Project Idea
thumbnail Do you enjoy sculpting animals and other three-dimensional creations with play dough and modeling clay? Imagine adding lights to a house you've built, or glowing eyes on a dinosaur you've created. There are countless possibilities! In this science project, you will make play dough that conducts electricity so you can add lights to your three-dimensional creations. This science project is the third in a three-part series on squishy circuits, which can all be done with the same materials. We… Read more
Elec_p075
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Time Required Average (6-10 days)
Prerequisites This science project requires understanding the Introduction material in the first two "Electric Play Dough" science projects: [# ProjectIdea Name="Elec_p073" Value="HtmlAnchor" HtmlText="Make Your Play Dough Light Up, Buzz, & Move!" #] and [# ProjectIdea Name="Elec_p074" Value="HtmlAnchor" HtmlText="Rig Your Creations with Lots of Lights!" #]
Material Availability This science project requires a Squishy Circuits Kit and ingredients to make conductive and insulating play dough. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Ask for an adult's help when using the stove to make the conductive play dough. Never connect the battery pack's terminals directly to each other; this is called a short circuit and can make the batteries and wires get very hot. Do not connect the LEDs directly to the battery pack without using play dough; this will burn out the LEDs.
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