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How to make a water bottle rocket

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    Building water rocket is a fun and easy way to demonstrate Newton's third law, In every action, there's an equal and opposite reaction. All rockets are based on this principle. Materials : - Cork - play doh or clay - Bicycle pump - Bicycle pump valve - Tape - Thin stiff cardboard - Glue - Paper - Soda bottle ×2 Create the nose cone   •  Roll a piece of paper into a cone       wide enough to fit on the                   bottom of the bottle. Feel free to       use colored paper.                            •  Wrap the cone with tape so as           to make it more durable and             water-resistant. Add ballast to the rocket  The ballast gives weight to the rocket which makes the rocke...
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How to make a Fidget spinner.

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            Fidget spinners are all the rage right now, but you don’t have to buy one! We are going to show you how to make a fidget spinner with just a few supplies. The best thing about this project is that your kids can customize it to make cool fidget spinners that no one else has! How to Make a Fidget Spinner Here’s what you need to make a fidget spinner: 1. A thin cardboard 2. A pen 3. Scissors 4. Sandpaper 5. Hot glue 6. Bearing ×1 7. Bottle cap 8. Small screws ×9 9. Skewer 10. Exacto knife (cutter) 11. Ruler Step 1: Making the body            The body of the spinner is entirely made from cardboard.                            PROCEDURES a.  Place the bottle cap on the cardboard sheet and trace out the circle. ...
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How to make a paper ninja blade

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  In this post, I will show you how make a paper Ninja blade that slices through the air in just 5 minute. It's easy to make and requires "no gum" "no tape". Materials 1.  8 sheet of square paper. 2. Scissors  (optional).       Don't worry if you don't have a square paper as I will show you how to turn a rectangular paper into a square one. Skip step 1 & 2 if you have a square paper. Step 1 Fold the paper diagonally as show in the picture above. Step 2 Use the edges as a guide to cut off the lower rectangle. You can save it for another project. Now that you have a square paper, let start working. Step 3 Fold the paper in half. Crease it and unfold the paper. Step 4 Fold the paper diagonally and crease it. Repeat in the opposite direction and crease it again. Step 5 Unfold the paper and make an airplane fold. Crease it but don't unfold it. Step 6 Fold the paper again in half along the previous...
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Introduction to Rc airplane electronics

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                                                                                                     In this post about Rc airplane electronics. I will be talking about the main electronics of an rc airplane.    The main electronics are: 1. Transmitter 2. Receiver 3. Battery 4. Motor 5. Electronic Speed Controller(ESC) 6. Servo Transmitter    The transmitter is what you hold to control your airplane. This is usually the most expensive component that you will buy.  Most modern transmitters use a 2.4ghz frequency. These new ones have shorter antennas and are easier to work with than the older FM radio.  Transmitters have channels. Some have 2, 3, 4, 6 and 12 channels. ...
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