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1  Using Arduino / General Electronics / Re: Problems with l293ne on: April 15, 2012, 04:43:15 pm
Thank you for your reply, I tested it a while ago and it was the grounds what was wrong. Anyway, I dindnt know about the diodes, so I will change the schematics.

Thank you again
2  Using Arduino / General Electronics / Re: Problems with l293ne on: April 15, 2012, 12:13:10 pm
Sorry, I did not notice that the connections could not being tracked ;-)

Thank you!
3  Using Arduino / General Electronics / Problems with l293ne on: April 15, 2012, 11:21:55 am
Hi everybody, I amdeveloping the l293ne ic to control a simple motor. What I have made so far is to join with solder the ic on a stripboard as you can see in the picture. Before join the stripboard I checked it and it worked, but now it doesnt. Can anyone check my connections in order to see if I have something wrong.

Thank you very much in advance and sorry for any inconvenience.

Enrique
4  International / Español / Re: Tutoriales electronica y Arduino on: April 09, 2011, 10:51:55 am
Gracias, voy a ver y os comento que tal
5  International / Español / Tutoriales electronica y Arduino on: April 08, 2011, 03:23:22 pm
Hola a todos,

me he hecho con una placa Arduino, pero la verdad es que soy bastante nuevo en esto y en electronica. En ocasiones esta falta de conocimientos es un problema a la hora de intentar probar o entender algun esquematico explicado en tutoriales. Alguien conoce algun videotutorial sobre electronica (por ejemplo, uso de transistores, condensadores, para que sirven ambos, diodos, etc) aplicada a la placa Arduino??
He visto unos bastante buenos en ingles ( http://jeremyblum.com/ ) pero si estuviesen en español mucho mejor ya que necesito entenderlo todo bastante bien.

Gracias por la ayuda y enhorabuena por el foro. Vi el documental y es impresionante.
6  Using Arduino / General Electronics / Re: kind of transistor for small dc motor on: April 08, 2011, 08:53:20 am
Thank you for explain it me so patiently. I will try with one of them ;-)
7  Using Arduino / General Electronics / Re: kind of transistor for small dc motor on: April 08, 2011, 05:57:50 am
but the motor only need 450 mA and you speak about 5 A
8  Using Arduino / General Electronics / Re: kind of transistor for small dc motor on: April 08, 2011, 05:45:41 am
I am interested on how do you know is TIP120? where do you look for? what is the way to know a specific transistor? thanks for your answers
9  Using Arduino / General Electronics / Re: kind of transistor for small dc motor on: April 08, 2011, 05:23:20 am
Mine is the first one: http://www.bitsbox.co.uk/motors.html

As I can see, I need 450 mA to feed the motor and Arduino´s pin only provide 40 mA. Right?
10  Using Arduino / General Electronics / Re: kind of transistor for small dc motor on: April 08, 2011, 05:16:40 am
Sorry, I didnt write details for the motor. Is a 3v motor so I think I dont need a transistor, do you agree?
11  Using Arduino / General Electronics / kind of transistor for small dc motor on: April 08, 2011, 04:42:50 am
Hi everybody,

first of all, thank you for this great forum which help me to intro to Arduino.

I want to control a small dc motor with a pin from Arduino. I saw a schematic here http://www.hispavila.com/3ds/atmega/motorescc_files/motorcc_tr.gif and I am wondering how can I know the kind of the transistor for this power (5v)? Also, why do I have to put a resistor in front of the Arduino's pin? It is protection? I know they are electronic questions.

Thanks in advance!
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