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Often times, we need to secure a room at our home or office (perhaps a secret dexter’s laboratory) so that no one can access the room without our permission and ensure protection against theft or loss of our important accessories and assets. There are so many types of security systems present today but behind the scene, for authentication they all relay on fingerprint,…
We previously built an Arduino based paper currency counting machine using a color sensor. Now in this project we are building an Arduino counting machine using IR sensors. This machine counts and sorts the coins in different sections with the help of an Infrared sensor. Here, an arrangement is made where IR sensors are placed to sense different coins, and Arduino UNO…
If you have ever worked with Batteries, SMPS circuits or other Power supply circuits, then often it would have occurred that you have to test your power source by loading it to check how it performs under different loading conditions. A device that is commonly used to perform this type of test is called a Constant Current DC Load, which allows us to adjust the output current…
Now day’s automation systems are everywhere whether its home, office or any big industry, all are equipped with automation systems. Restaurants/Hotels are also adopting recent automation trends and are installing robots to deliver food and tablets for taking orders. Using these digital menu cards like tablets, customers can easily select the items. This information will…
Arduino is very popular for building hobby projects and games, and we have previously used Arduino to build Snake game, Ping pong game, Space race game, etc. Today we are building one more popular game using Arduino- Buzz wire game or Steady hand game.
For this project, we will use an Arduino Uno, Buzzer, and two Aluminum wires. A 16x2 LCD is also…
WARNING!! The circuit diagram discussed in this project is only for educational purposes. Be advised that working with 220V AC mains voltage requires extreme precaution and safety procedures should be followed. Do not touch any of the components or wires when the circuit is in operation.
It is easy to turn…
RC cars are always fun to play with, I am personally a big fan of these remote-controlled Cars and have played (still do) with them extensively. Most of these cars today provide a huge torque to handle rough terrains, but there is something that was always lagging, its Speed!!.. So, in this project, we will build a totally different type of RC car…
RFID (Radio Frequency Identification) is an inexpensive and accessible technology. It can be used in many applications such as access control, security, asset tracking, people tracking, etc. You have seen the RFID Door Lock system in Hotels, offices, and many other places where you just have to place the card near RFID reader for a second and the door will be opened. We used…
ESP modules are popular for their Wi-Fi functionalities like ESP8266, ESP-12E, etc. These all are powerful Microcontroller modules with Wi-Fi functionalities. There is one more ESP module which is more powerful and versatile than previous ESP modules- its name is ESP32. It has Bluetooth and Wi-Fi connectivity and we already explained BLE capabilities of ESP32 and used ESP32…
Today almost everyone uses their mobile phones to listen to music, news, podcasts, etc. But not long ago we were all depending on local FM Radios to get the latest news and songs, slowly these Radios are losing popularity but in emergencies when the internet is down, radios place an important role to transmit information to the users. Radio signals are always present in the…
A simple Rain Detection System can be easily built by interfacing an Arduino with Rain Sensor. The sensor will detect any rainfall falling on it and the Arduino board will sense it and can perform required actions. A system like this can be used in many different fields, such as agriculture and automobile fields. Rainfall detection can be used to automatically regulate…
Fitness bands are getting very popular nowadays, which not only counts the footsteps but also tracks your calories burned, display heartbeat rate, showtime and many more. And these IoT devices are synced with the cloud so that you can easily get all the history of your physical activity on a smartphone. We have also built an IoT Based Patient Monitoring System where the…
