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1  General Category / General Discussion / Re: Arduino newbie on: August 16, 2012, 06:23:35 pm
Ok after experimenting with leds and buzzers I gave it a go with a hobby motor specifically this.
Before i even started i was confused since i could not find anyone on google powering up such a motor.
Correct me if i am wrong, as far as i understand i can only power it to a fixed speed since there is not the third yellow wire which allows you to control its speed.
So if i want to power it AND control its speed do i need to use any kind of transistor or a bridge (dont really know what each does or is used for)?
And finally, lets say it will only run on a specific speed. Will the speed be determined by the resistor i will use? For example the bigger resistor i use the slower it will run because of the current block. Am i correct?
2  General Category / General Discussion / Re: Arduino newbie on: July 31, 2012, 05:54:01 pm
Thank you i understood it and just fixed it!  smiley
3  General Category / General Discussion / Re: Arduino newbie on: July 31, 2012, 08:34:05 am
Ok just got the jumper wires!
Tried a simple led project on my breadboard like this.

The actual code is the same with the blink example but pin has changed to 12.
That resistor is 220 ohms.
The led  is blinking, however when i added a 470 ohm resistor instead of that 220 ohm it would blink the same bright.
Why is that? Shouldn't the brightness decrease? I tried pulling off the resistors in both cases while the led was blinking but no difference.
Even if i didnt put any resistor it would blink the same.
4  General Category / General Discussion / Re: Arduino newbie on: July 27, 2012, 08:51:42 am
Cables are "fat", i guess i will buy from the store and finally have a project moving on smiley-fat
5  General Category / General Discussion / Re: Arduino UNO or Leonardo? on: July 26, 2012, 07:00:59 pm
If you are a begginer like me i would reccomend you the UNO.
As others said, it's basic and has less bugs.

Whatever you choose good luck have fun smiley-wink
6  General Category / General Discussion / Re: Arduino newbie on: July 26, 2012, 03:04:17 pm
Thank you for the fast response!
I think i will give it a try since they can be used even if it does not fit the uno.
As for the future i think i will buy from the local store, as i will probably have the components by tommorow.

Thanks i will post as soon as i get my first project running smiley
7  General Category / General Discussion / Re: Arduino newbie on: July 26, 2012, 02:10:13 pm
Ok i ordered some basic things except for the jumper wires.
Question: I have a computer power supplier that won't be used anymore.
Is it possible that i cut the small cables and use them as jumper wires or is it different from the usual ones?
8  General Category / General Discussion / Arduino newbie on: July 12, 2012, 10:31:53 am
Hello! I just bought the arduino uno rev3 and completed the blinking example, plus i used an external led on pin 13 with the small leg on the gnd pin, run the same code and both leds blinked as expected.
I am about to buy some hardware however i have no idea about electronics, so i would be greatful if someone would give me little info on
what to buy to start led projects like led arrays etc. As far as i know i will need a breadboard(kind? size? price?), some leds(i got some covered) wires(what kind?)
resistors(what kind?).

Also i have a small display with 14 pins(as far as i searched most people use 16 pins at least so i don't know if i can make use of it), 8 resistors(560   560R   Green, blue, brown, gold
532Ω - 588Ω),some buttons and switches. In the near future i will post some photos of my hardware.

Thank you!
(I could not find any better section for this topic, if it is on the wrong part of the forum let it be moved.)

Photos of my current gear:

A board
LCD Display(14pins)
LEDS-Resistors(as i said above)
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