Ultrasonic transducers and ultrasonic sensors are devices that generate or sense ultrasound energy. They can be divided into three broad categories: transmitters, receivers and transceivers. Transmitters convert electrical signals into ultrasound, receivers convert ultrasound into electrical signals, and transceivers can both transmit and receive ultrasound.
OK, that’s all for theory. Now let’s build the Robot itself.
But before that. What all components will you need?
Here is a list of all the components you will need to create this project:
We will add a Custom Cursor to our NextJS application. I will be using the custom index file provided by NextJS and add the custom cursor to it, but you can add the cursor to any file by following the same steps.
You can find the live demo over here.
Finishing off the basics first, we will quickly create a new Next Application and remove the unnecessary files from it.
npx create-next-app custom-cursor-demo
After the application is created remove, the api folder from pages directory and create a new directory named components (this is where we will add our custom…
We will build a simple system using Flutter for app, Firebase as backend and NodeMCU ESP8266 as the WiFi board to control an LED. You will be able to turn this LED on and off from anywhere around the world with just internet access, but after reading this article you will be able to understand, how you can control any electrical component with just a few minor tweaks in the code.
The system is pretty simple. We will send the command to control the LED from the app to Firebase Realtime Database. …