Create STEM

 Smartphone Controlled RC Car      Hey!  So, this blog post would help you make a DIY  Rc car that can be controlled using a smartphone via just Bluetooth. The entire page is divided into 6 main sections that'll guide you through the process -           Required parts    Fundamentals     Important stuff to keep in  mind    The circuit diagram          The code      Connecting the car with the mobile app       # STEP 1 - REQUIRED PARTS  Motors  and wheels kit   link L298n motor driver   link Arduino uno  link 9V battery  HC05 bluetooth module  link Jumper wires  link Mini bread board  link #STEP 2 - UNDERSTANDING THE  FUNCTIONING             W hen we move the joystick in the smartphone the action is recorded and a signal is sent to the c...

  A rduino Remote Control Car Remote controlled toys have always captivated me. Thus, I decided to make a RC car of my own....😎.  It is pretty interesting to make, but a  look at the basics first...... Item list   - These can be easily picked from Amazon or other online stores     a. L298N Motor driver   -    Link     b . Joy stick                              -    Link  c . Arduino uno                      -    Link                         d . 9v battery                             -   Link     e. M otor and wheels         -   Lin k    f . Jumper wires        ...

 LCD KEYPAD DOOR LOCK USING AN ARDUINO   Hi ! how about locking your room using an LCD door lock. That would be nice, especially so if you want to lock out a pesky sibling. 😄 THIS IS WHAT YOU WOULD REQUIRE An Arduino Uno Micro Controller  16 x 4 LCD display  12 V DC solenoid door lock  Led Lights  Some jumper wires for the connections    9 V battery (an external power supply more closer to 12 V  would be better ) Relay  10k potentiometer 220 Ohm resistor 4 x 4 keypad  HOW DOES THIS DOOR LOCK WORK   🔐🔐🔐 When one enters the password for the door lock, the keys pressed match with the  default keys.  The solenoid lock is activated and the door lock opens.  Simultaneously, the LCD also displays a 'Welcome' message.   If the keys do not match the default password then the door lock remains closed. The LCD also displays 'Wrong Password' CIRCUIT DIAGRAM THE CODE  After setting up the circuit as shown a...

                                                Hand Battery : Harnessing electricity  Well !! You 👉👉 are also a battery !! A human powered one !! 😀😀😀Lets check this out. Item list   2 x cardboard covers  Copper plate   Aluminium foil  2 x jumper wires   A few paper clips   Multimeter  Procedure. Mount the copper plate on one of the cardboard covers and cover other cardboard cover with Aluminium foil.  Connect the two above prepared  plates to the multimeter test probes using the jumper wires. Set the multimeter to  the 200 milliampere setting.  Place one hand on each plate and observe the readings. If negative current is shown in the.meter, then simply reverse the connections of  the multimeter probes. You can even wet your hands with water (or sanitizer works the best) to make ...

   HARNESSING ELECTRICITY TO COMMUNICATE - MORSE CODE Morse code  is based on name of its inventor Samuel Morse and was used first in 1844. For well over 100 years it was extensively used for communication including during the World War 1 and World War 2. UNDERSTANDING MORSE CODE Here is a video to understand the Morse Code and you can also try a few android apps to get the hang of Morse Code STARTING THE PROJECT An excellent resource to understand the Morse Code  and execute this project of harnessing electricity to communicate is via the Microsoft Education Workshop site     https://www.microsoft.com/en-us/education/education-workshop/telegraph.aspx Collecting materials for the project was super cool. It's mostly available online via Amazon or other web portals. A simple Google search and would suffice. I used an Arduino Uno micro controller for the project but you can use a Microbit micro controller also. PROCESS Lets get started.....first...

Have you ever wondered how fast does light travel ? We can measure the speed of light in our home using just our home appliances through a simple(and tasty !!) activity. Item List For this you will be needing: 1. A microwave  2. A bar of chocolate ( eggs work too!!) 3. A ruler  4. and a calculator. Principle A Microwave oven as the name suggests uses microwaves to heat our food. These microwaves are a part of the Electro-Magnetic spectrum and lie between Radio Waves and Infrared Waves.     The interesting part is that these micro waves travel at the same speed as that of light. Viola! Calculating the speed of these micro waves would give us the speed of light. Now thankfully we have a handy equation to calculate this :-        Speed of Microwaves (Light) = Wavelength (  λ)   x  Frequency (  ν )          Experiment Frequency - You may find this at the back of your microwave (usually 2450 MHz) o...