Soil moisture-sensing by hacking a solar light Contributors: Sarah Al-Mutlaq Share Use this URL to share: Share on Twitter Share on Facebook Share on Google+ In this tutorial, we are going to take a simple solar powered pathway light from a department store and rewire it to be a soil moisture sensor. The finished design will turn on an LED when the soil dries up. For this tutorial, I purchased a $2 solar pathway light from McGuckins Hardware, but most any standard solar pathway light should do the trick.
Understanding Air: Climate Change and Modeling Combustion with LEGO<sup>®</sup> Bricks OpenClose Lesson Summary Overview Air is a mixture of different molecules. Its composition is the result of chemical reactions, atmospheric motion, and emissions from a variety of sources, both natural and manmade. One of these emissions is carbon dioxide (CO2). LEGO Robotics - Applying STEM in the Classroom Halliburton and the Texas Tech University T-STEM Center in collaboration with the Whitacre College of Engineering, Electrical and Computer Engineering Department provided the opportunity for teachers to participate in a project-based learning curriculum centered on the 2012 Get Excited About Robotics (GEAR) competition challenge. During this five-day workshop, teachers began to build a solid foundation for moving robotics into more mainstreamed science, technology, engineering and mathematics curriculums. This website includes the curriculum used during the teacher workshop as well as serves as a basis for teachers to create their own LEGO Robotics programs. Throughout this curriculum, students investigate the components of LEGO robotics: LEGO Mindstorms NXT brick, LEGO Mindstorms Education software, design journaling, robot construction, programming and problem solving. This curriculum is designed for hands-on learning and the activities can be modified to fit any grade level.
A quick tutorial on implementing and debugging malloc, free, calloc, and realloc Let’s write a malloc and see how it works with existing programs! This tutorial is going to assume that you know what pointers are, and that you know enough C to know that *ptr dereferences a pointer, ptr->foo means (*ptr).foo, that malloc is used to dynamically allocate space, and that you’re familiar with the concept of a linked list. If you decide to work through this tutorial without really knowing C, please let me know what parts could use more exposition.
Science through LEGO Engineering The following four curricula are designed to introduce students (in Grades 3 to 5) to various science concepts through design-based LEGO projects. The first several lessons of each unit engage students in scientific explorations sometimes using the LEGO tool-set as a resource. The students are then charged with an open-ended design challenge where they use the science they learned alongside the engineering design process to design and build LEGO creations that meet criteria that the students can observe and test.
Wind Power: Creating a Wind Generator The lesson presented here focuses on the engineering design process and its use in identifying a question (solving a problem), developing a design or change in design, testing that design, observing and collecting data, analyzing the data recorded from the experiment, and forming a conclusion to perform another round of design. In this case, we are attempting to maximize the voltage obtained from a wind-driven turbine through the use of several experimental designs. You may want to review the following multimedia presentations to learn more about STEM and the engineering design process.
Understanding Air The lesson meets the following Chemistry Items of the Massachusetts State Frameworks for grades 6-8, Physical Sciences Strand: Elements, Compounds & Mixtures): 5. Recognize that there are more than 100 elements that combine in a multitude of ways to produce compounds that make up all of the living and nonliving things that we encounter.6. MIT Printable Robot The robot's design is based upon the idea of foldable robots - the 3D robot is made from a patterned 2D sheet, which is folded and then equipped with actuation mechanisms and electronics. This allows the robot to be created quickly at low cost and assembled easily, providing a platform on which students can experiment and learn about robots. For the AFRON 2013 design challenge, improvements have been made to the SEG's hardware in order to use a standard low-cost computing platform and make it more robust and adaptable, allowing for the easy addition of new sensors or other accessories. The software has also been overhauled to make it more accessible to first-time programmers and easy to use for any robot enthusiasts. Finally, a curriculum has been developed which teaches students the basics of behaviors and Finite State Machines while guiding them to implement these concepts on the SEG.
Stuff I find interesting 17 Jul 2014 If you don't know what libswarm is take a gander at Libswarm in a nutshell Just a quick demo showing off what libswarm can do with logging. I will be using code from this gist: Enchanting : Enchanting : Enchanting Enchanting Cards in Multiple Languages Enchanting cards are now available in: Thank you, translators, for your hard work! Enchanting v0.2 is out! Jul 9, 2014 - Enchanting v0.2.4.3 is out and now includes an updated Spanish translation. May 6, 2014 - Enchanting v0.2.4.2 is out, and now includes a Czech translation.
Soda Bottle Rocket LED Fireworks Originating in China, fireworks have been around since before the 16th Century and have been making people look to the night sky with delight. Firework formulas are closely guarded secrets handed down from generation to generation and the overall concept has not changed much over the centuries. Mix chemicals compounds, place them in a delivery device, light a fuse, and watch the fun. CEEO: Outreach In 2006, LEGO education partnered with the CEEO to establish LEGO Engineering Conferences. These are ideal for educators interested in immersing themselves in one-day, hands-on STEM workshops, facilitated by CEEO personnel and using LEGO Education robotics materials. Many organizations have hosted these conferences throughout the world, generating interest by local educators in STEM education. In 2008, 25 LEGO Engineering Conferences were held in locations ranging from Arizona to Australia and Japan.