Need help with learning Arduino and electronics

Community General Discussion
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Hi I'm sarathi and I want to learn about IOT so I started to learn from Arduino but, I don't have any knowledge in electronics. Please help me with where I need to start learn electronics and is all electronics topics necessary? Which topics are I need to cover? is formula important?

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it depends what you want to do

which ones ?

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Well, I can't recommend any specific books that will address what you don't know (is it anything? Like what a resistor is, what Ohm's Law is, that basic?)

I can say that electronics is definitely hands-on. Do you have any electronics to experiment with? If not, a good starter kit would be the way to go.

Do you own a multimeter?

If it's books you're after, I'll leave that to other, wiser forum members who can advise specific titles better than I. I know there are a lot of educators in this forum so they would certainly have a better idea.

However, you will need some basic kit to get into it. You can't really learn electronics just reading about it.

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You can spend the rest of your life learning electronics and processors. But you can get a basic understanding in a few weeks. I would highly recommend you get a copy of the Arduino Cookbook and read it cover to cover. It has a lot of small projects, try any that interest you.

Start with a UNO or Nano, they can be purchased for a few bucks. The UNO is easier to prototype with when starting and it has been around about the longest.

First and most important is the Arduino is not a power source. It is fine with a few LEDs but never a motor or or anything inductive. There are also many on line tutorials on basic electronics, some poor many very good. Follow some of those.

I suggest you get several as the odds are high you will damage one or think one is bad, this gives you something to test with.

The most important thing is to relax, enjoy and have fun.

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I saw some formulas on LinkedIn but I can't get it some formulas like voltage divider, resistance finding, and so on.
I don't know which component is suitable for my circuit , how to choose it? Is there any tips?
Thanks for your reply

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I have kits for learning the main doubt how to choose components for my circuit and where to give wire connection, is there any tips?
Thanks for your reply

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I'm a IT student and programing concepts are easy to understand but the electronic concepts little hard for me because I didn't came from electronic or physics background. Thanks for your reply

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Hi @sarathi35 ,

Welcome to the forum..
Just starting out, fun..
This was my first book..
Getting Started in Electronics by III, Forrest M. Mims
My copy is from the late 80's..
Happy and surprised it's still available..

good luck.. ~q

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Thanks for your help

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Plenty of online calculators like these:
https://www.allaboutcircuits.com/tools/

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Thanks bro

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Hi I'm sarathi I need help with how to choose transistors, ICs and capacitors. All are looks same I can't get to understand which one is I need choose? Transistors and IC is the biggest doubt, please help me with that.

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I can understand how its a daunting task to select a transistor from the 10's of thousands available.

The key is to know what you need the transistor to do. Consider, you walk out to the tool shed to get a tool. There is at least 100 tools, which do you pick?

I don't know if this helps or not but it is reality.

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That cannot be completely answered. Choosing the parts depends on what you are building and what your circuit requirements are. You can use a transistor or MOSFET or IC to turn a LED on and off. What you need to know how much current it will require and what voltage it needs vs what you have. You will need a resistor in series to limit the current unless it is built in (some ICs do this). A transistor or MOSFET will turn it on or off.

Switching inductive loads is similar but you need additional protection because when a charged inductor is open circuited (turned off) the magnetic field collapsed reversing the polarity. This will generate basically an unlimited voltage that will rise until limited by external circuitry IE fly-back diode. Do some tutorials on basic electronics, this will probably help.

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Yes you are right thanks for your reply

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Thanks for your reply I will do

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I have merged your topics due to them having too much overlap on the same subject matter @sarathi35.

In the future, please only create one topic for each distinct subject matter and be careful not to cause them to converge into parallel discussions.

The reason is that generating multiple threads on the same subject matter can waste the time of the people trying to help. Someone might spend a lot of time investigating and writing a detailed answer on one topic, without knowing that someone else already did the same in the other topic.

Thanks in advance for your cooperation.

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Some people learn by reading on the internet; some, by being mentored, and some need the formalism of classroom education and labs for hands-on reinforcement of the classroom teachings. If you fit the latter description, you might be best to look around in your community. Is there a local college, trade school, etc. that runs classes that might help you? Is there a local maker group where you can seek assistance? Because internet learning is good for some, but not everyone.

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I understand, I do not do the math either but use online calculators. Here are the primary one3s I use:

These have been around a long time and work.

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