Sorry, I don't know if I should post topic in "Project Guidance".
I am new to electronic, although I learnt some idea in my secondary school.
I want to ask how to protect the Uno Board from circuit damage.
Will the board burnt easily??? such as because of Back Voltage mentioned in chapter 9 of the Starterkit's book.
And so the damage will damage to my connected PC??
As I am going to finish the last chapter of the book, and I will be left alone to start my thing, so want to know what measures I can do for the Uno board.
"back voltage" - I guess that refers to the reverse voltage spikes caused by switching off inductive loads such as motors, relays and solenoids. Use a reverse polarised diode across the load for that.
There are many other things that can damage your Arduino - from electrical to mechanical to environmental - so unless you are specific there's not much we can say about it.
Still you should add a link to the specific text as I for one have never even seen a starter kit other than in online advertisements, so still no idea what exactly you're referring to.
wvmarle:
"back voltage" - I guess that refers to the reverse voltage spikes caused by switching off inductive loads such as motors, relays and solenoids. Use a reverse polarised diode across the load for that.
There are many other things that can damage your Arduino - from electrical to mechanical to environmental - so unless you are specific there's not much we can say about it.
Thanks. I misunderstand people here are most start Arduino from the Starterkit, and so understand what I mentioned.
The term "back voltage" is also mentioned from the Starterkit book.
Yes, the book mentioned installing the diode parallel to the dc motor.
I started by browsing Taobao and kinda randomly picking up some parts (which mostly turned out useful). I knew more than enough about programming and electronics when starting with Arduino to not be interested in a starter kit.
Others worked with AVR processors well before the Arduino brand or starter kits even existed.
Schools often use Arduinos in their teaching - again no starter kit involved for those folks.
Some people may indeed have started from a starter kit, and many that did start with a starter kit had a different one than you had, as there are numerous different starter kits out there.
Anyway, you can never expect people to start the way you did, or to know anything at all about your project. You will have to provide all that info in detail when asking questions.
totohk:
ok, thanks. I edited my topic title and contents.
Updating the title can be useful but please don't make significant changes to earlier Posts as it makes a nonsense of the responses that have already been written. Put new material in a new Reply.
And, as @wvmarie has said, provide as much info as you can. The people with the most experience from which to help you are those who are least likely to have begun with a starter kit.