Posts

Make Concentrated Sulfuric from Battery Acid

Image
                                                                           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 battery acid, there will be 15ml of sulfuric acid (in 30% solution). Sulfuric acid is boiling at 337 0 C. (In 300 0 C, it will decompose slowly) But water is boiling at 100 0 C. So we can heat and remove water from solution.                 from Wikipedia.com Mass fraction H 2 SO 4 Density (kg/L) Concentration (mol/L) Common name 10% 1.07 ~1 dilute sulfuric acid 29–32% 1.25–1.28 4.2–5 battery acid (used in lead–acid batteries ) 62–70% 1.52–1.60 9.6–11.5 chamber acid fertilizer acid 78–80% 1.70–1.73 13.5–14 tower ac

Bi-color LED bulb

Image
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/

Salt Crystals

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

SPI OLED with Ardiuno

Image
                   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    ------->   D12     MOSI  ------->   D11     RES     ------->   D10     DC       ------->  D 9     CS       ------->  D 8 * However, my display worked without connecting GND and VCC. Compile and upload code to Arduino now we're going to upload the code for Arduino. to do this you need Arduino IDE , Adafruit-GF

Simple music generator with Um 66

Image
   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   

how to find is this food has protein

Image
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.

Let's make Oxygen H2O2 + KMnO4

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