Bluetooth is one of the most common ways for two devices to communicate. Every phone, tablet and laptop comes with built-in Bluetooth, as do several peripherals. So, with a little DIY work, you can do some wonderful things with this technology.
For any project on this list, you need to know the basics of home electronics. Electronics for and have the necessary tools handy. Some projects require special tools, as noted. And of course, always remember to take all the necessary precautions before you start.
1. Connect Arduino to Arduino via Bluetooth
The main project you need to master is to set up Bluetooth on an Arduino microcontroller and set it up to communicate wirelessly with another Arduino board. For this, Martin Curry has a great step-by-step guide linking two Arduino boards. as master and slave.
Naturally, you will need two Arduino boards and two Bluetooth receiver modules for this. To get started, start with his basic tutorial where he will teach you how to remotely control the LED lighting on an Arduino Slave via the Arduino Master.
Then move on to a more complex project where the slave measures the temperature outside and sends a signal to the master inside, who in turn displays the readings on the screen.
Learning the basics of setting up Bluetooth on two Arduino devices will open up a lot of possibilities for you, from beginner Arduino projects. strange Arduino projects
2. Wireless bulletin board for telephone messages
This might be the easiest and most rewarding project to start with. With an Arduino board, a few wires and an LCD screen, you can type text on your phone and display it on the screen. Similarly, you will have a wireless bulletin board.
This project does not require soldering or any additional skills, you will only connect cables to the parts. Even the code for the Arduino board is ready to download, and there’s a handy Android app you can get from the Play Store. This should all take no more than half an hour, and is the perfect way to get started with DIY electronic projects. Get Started with Electronic Projects
3. Add Bluetooth to your old wired headphones
If you have a pair of old wired headphones that are broken break don’t throw them away. This cool do-it-yourself tutorial will show you how to turn them into wireless headphones by adding Bluetooth, and also give you a new plug to connect a standard 3.5mm cable.
You’ll need a mini Bluetooth receiver, adapters for a DC jack and a 2.5mm to 3.5mm jack, and a pair of old headphones. You will also need a soldering iron and a multimeter, which you can find in any hack space.
In this project, you will take apart the headphones and the receiver and then solder them together. Then put everything into the speaker, make a hole for the 3.5mm jack and charging cable.
All of this won’t cost you more than $10, which is cheaper than even the most inexpensive Bluetooth headphones. we can recommend.