Cool Science Page

Recently, I ordered a Raspberry Pi Pico board for a project. But as this project need more time to start, and also these days are bored, I decided to make a simple gaming console from it. First of all I have never used RP board, so I had to do some studies. After reading on internet, I realize we can program raspberry pi with either using micropython or C++. As micropython is much easier I decided to use it.  First I downloaded the micropython bootloader from internet . Then, I plugged my board to the computer and I copied the downloaded file to the board.  From here, I need " Thonny " to upload and test my python code. So I downloaded it and installed. Then I started coding Test 1 - Simple Game For this test I decided to use 128*64 OLED and GY-521 Gyro module. I'm not going to use gyroscope, but I will use the accelerometer. Here is the description of my game. There is a ball, and it is the player object. Then, there are bombs and a cup cake. Player can move according to...

  A fter a long time, I'm going to start a project. Since I was very young, I always wanted to build a computer from scratch. Once I tried to do it with AVRs, but it didn't worked. While the covid-19 pandemic I could find some information about a CPU z80, which was used early computers. z80 CPUs are still available and, other chips like SRAMs, EPROMS can still find on eBay. So I decided to build my dream computer with this z80. So, I ordered some ICs with z80 two months ago, But I received them, in this year. So, I started my project in 2021. I have little experience with AVR and PIC microcontrollers, and Arduino. But I have never used a CPU like this before. So, my first step is trying  to write some little programs with this CPU. To control Inputs, Outputs, and Memory, I decided to use an Arduino Board. z80 CPU has 8bit data bus and 16bit address bus. with the control signal pins, I need at least 30 IO pins. If I had an Arduino Mega board, I could easily control this CPU. Bu...

Let's make mini "hoe". I started with a steel rod and then I made the blade by hammering. Then I sharped the blade and used an epoxy glue to bond it to a toothpick. To get the shine and the color of the toothpick, I used mineral oil and then coated with nail polish. Video

                This quick post shows you how to make cleaning agent for your home laboratory glassware. This will make you easy to clean your laboratory glassware rather than soap. It can also remove potassium permanganate stain Mix 30% hydrogen peroxide with concentrated hydrochloric acid for 1:1 ratio. Dilute the solution by adding water about 3:1 ratio. Use the solution to clean your glassware. It doesn't require to brush while cleaning. Warning : The solution contains acids and strong oxidizers.  

In this time I tried to grow a big crystal of copper sulphate.

The following video shows you a cool magic trick. You need only a matchbox striker. Just watch the video....

Hi there. In this post, I'm bring you a really cool experiment. The blue bottle experiment. This is actually not about a blue colored bottle. This is about a color changing solution. There is a bottle contain a liquid like water. When it shake, that liquid turns blue color. You will need.... 1 gram of Sodium hydroxide 5 grams of Glucose Methylene blue Methylene blue is used to treat fungal infections of fish . So you can find it from pet shops. Sodium hydroxide (also called caustic soda) can be found in hardware stores. Let's start. first mix sodium hydroxide with 20ml of water. Now keep is aside. Then get the glucose and add 40ml of water. Now add few drops from Methylene blue and mix the solution. And now pour the those two solutions to a volumetric flask. If you don't have a flask, just get a bottle. After few seconds the solution turns colorless. Now shake the flask. It turns blue and again after few seconds, it turns colorless. Just enjoy. ...

from arstechnica.com What do you think about that? Niels Bohr said that electrons were travelling in circular orbits. But today, we know that electrons are traveling in orbitals . I think before we answer the question, we have to talk about the structure of electrons. There are many energy levels in an atom. In each energy level, there are orbitals . There are four types of orbitals, we call s, p, d, f. When we talking about first energy level, there is only one “s” orbital. Then the second energy level, there are two orbitals called “s” and “p”. ( I’m only talking about s and p orbitals in this post. ) Every electron moving in their orbitals. So, we can’t tell where is the electron at the moment without catching it. But we can mark a specific area (That is what I called orbital.) and tell “the electron can be anywhere in this orbital.” In other words, the possibility of an electron can be from Wikipedia anywhere in orbital is one. By studying their wave funct...

            When I was 10yeas old, I read a book about funny experiments. Among every other experiments, there was a experiment about chemical garden. However I couldn't did it, because I haven't any idea about using chemicals. and also I had no way to find chemicals. By the January of this year I could gather some chemicals to do this experiment. I learned how to make sodium silicate at home. Then I got a chance to do this experiment.             In this experiment we are using some colorful salts to make our garden colorful. However I could use only three salts. They were copper sulfate, zinc sulfate and ferrous sulfate. I wanted to use nickel sulfate. But I failed to make them. Ok. Let's see what we need... The experiment processed in a test tube You will need :- A Beaker (or any other clear glass container) Sodi...

                                                                           Hello everybody. Now we are going to make concentrated sulfuric acid from battery acid. Also you can use other types of sulfuric acid. However concentrated sulfuric acid is extremely dangerous. So you must be careful when working with it.                                    In this experiment I used battery acid. It has 29% to 32% of sulfuric acid. It means, if we get 50ml of batt...

Hello everybody! I made my white color LED bulb into a bi-color LED bulb. To see how I made it, click the link bellow. http://www.instructables.com/id/White-LED-Bulb-Into-a-Bi-color-LED-Bulb/

Hi everybody. Since last month I tried make a large salt crystal. But I couldn't. However I could make small salt crystals.

                   Hi. Today I show you how to use OLED Display with Arduino UNO . first of all, you need an Arduino board and an OLED Display. OLED DISPLAY   There are many types of OLED displays by color & type of connection. In this   experiment, I   used a 128*64 blue color SPI OLED display. Arduino Board   In this    experiment,  I used Lakduino UNO    which is   an Arduino compatible board . But you can use any Arduino board for this like pro, Nano, Leonardo etc. Connecting Display to Arduino My OLED Display has 7pins.  OLED                  Arduino     GND   ------->   GND     VCC    ------->  3.3v     CLK    ------->...

   Hi, this is my school vacation. So I show you a simple circuit that makes music. Do you know what is um 66 ic. That is a small ic. It includes music tones. So, in this circuit we use this ic. List of electronic components Componet Quantity Ic UM66 1 2Sc828 1 100ohm 1 Circuit Diagram First time make it on a breadboard and check it. If it is working properly, you can make it on your own PCB or a dartboard. Pin configurations of UM66 and 2SC828 are given below. please add a comment   

hello there, in this post I show you how to find protein. what are you need:-             a solution from a food              sodium hydroxide             copperselfate             a test tube 1. add sodium hydroxide for food which you choose for this experiment 2. now add a little from coppersulfate. 3. if your food has protein, the solution maybe purple.

In this video i show you a way to make oxygen at home. Please add a comment.

Hello there, In this Halloween season, I made a mini game. It name is "The Halloween". I give you it free. I think you enjoy from playing this game. How to play It's very easy. you have to collect all the jack o lanterns. But,  you have to be careful with ghost. Download Please add a comment

Welcome. Today I show you how to transmit electricity without wires. (wireless)  This is a simple circuit that work with 3v. The Transmitter You need :- any kind of npn transistor that work with 3v (2SC828, D400, BC547) 1K resistor thin copper magnet wire (I found that from old transformer)                 Coil wind 30 turns from any magnet wire that you found.Now tap it by 15 t and it connect to positive of battery The Receiver You need :-     LED (any colour) magnet wire You Can Use It for..... Wireless battery charger Wireless Lamp