In a class of students, every Raspberry Pi that is started for the first time will be visible in the Bluetooth connections as "PerfectPi". This is inconvenient when you have a class of students. Students will not be able to tell if they've connected to their Raspberry Pi or to the controller of another student.
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- #728
- 19 Feb 2018
Leave them to figure out the problem themselves
As always, you should let them all start the phone and all of them to search for new Bluetooth devices and then all of them will see a number of different PerfectPi(s). They will start to ask questions like how and why. They will very soon understand that the names of all the controllers are the same and that they should change them.
Ask them if they know of a way to change the name of the controller
Probably some of them will figure it out. Probably some of them know it. Just ask them "How would you change the name". It is important for them to understand that this name is something that is written on the SD card. They must open the SD card, find the file on the SD Card where the name is written and change this name.
Lucky connection
A student could, by pure chance and luck, connect to his/her raspberry pi even though all the raspberries are with the same name. In a group of 10 students with 10 controllers, there is a 10% chance for this to happen. When a student connects he/she could change the name of the connection in the Bluetooth tab on the phone, but this change will be visible only to him and to nobody else. It will not be permenant for the controller. It will be just the connection renamed on the phone.
Курсове и занятия включващи този Урок
Този Урок е използван в следните курсове и занятия.
Perfect STEM course. Module 1 - Smart Car with Raspberry PI
Disassemble a remote control car. Change the brain of the car with a smart computer like Raspberry Pi. Build a smart device with artificial intelligence that you could control from your phone and that could freely navigate itself in the real world and on the Internet. Use your hands. Develop programs for your robot and your phone. Be curious and invent.
The perfect course lives up to its name. You move through the content, we check it and return feedback to you.
In the end, you should be able to better understand how to program and design smart devices that would make the world a better place. For everybody age 12+, 16+, 21+, 35+, etc. The hardware costs about 150$. It changes through the years so it might take some time for you to find it as Raspberry PI, motor drivers, power banks and h-bridges.. they change. Note that the course was designed to be led by a teacher with a decent knowledge in embedded hardware and software. This, on the other hand should not stop you, if you are curious.
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Configure Raspberry Pi name
When connecting to the Raspberry PI you will see it on your phone with a default name of "PerfectPi". You can change this name to something that you would like. Actually, you should change the name to something else to learn how this name could be changed. With this tutorial, you will learn some pretty interesting hacks and a thing or two about file system
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