Hello, I'm back for a last question.

I don't put any diode. If it useful, can you explain me how to put it on my system ? (don't forget that I have 2 coils). Thanks 

I made it! Finally, I used a "BSX46 8605". If someone want a schematic, it is with pleasure that I would post.

Thanks all and see you !

Oh, I know that I can buy but if you could see all I have you would understand that I can do differently.

Besides, I just found this in my tiroire:
http://www.datasheet.hk/download.php?id=1319109&pdfid=0F3F4291C12470EA80C2B124287E959E&file=0164\tip3107_4124013.pdf
and
http://www.fairchildsemi.com/ds/BD/BD135.pdf

Is that one of the two could replace the 2N2222 ? (I'm french and I find hard to read datasheet...)

I looked to a transistor which support 150mA and more but I didn't found.

Is it possible to use divers small transistors to add the current final ?

I found an other possibilities, use an optocoupleur.

I need some help to progress  .

Thanks for answer 

I remeasured the intensity. I found 106mA and 146mA (depending the direction). So BC547 is maybe to small, don't think so ?

Hello !
I use a relay which works with 100mA according to the datasheet but, in practice, I measured 130mA.
The relay : G2RK-1
Datasheet : http://doc.chipfind.ru/pdf/omron/g2rk1.pdf

First question : Is this relay work well with 230Vac ?

As you can see, it works with a double coil. Therefore, the schematic I'm trying to achieve is half of the full schematic.

I want to increase intensity of a digital port to use this relay. I found this :


But I don't have 2N2369. How to found an equivalent ? For example, I have a BC547, does it work ?

Thanks you !

PS: if I'm wrong in my reasoning, report it to me 

Thanks for your answer ! I used my Uno as an AVR programmer. I just removed the Atmega and it works well.
Now I can I can programming my Ethernet with my Uno ! 

Is it possible to program an Ethernet card with another Uno card connect via USB to the computer?

Someone would have a diagram?

Hello !
I try to connect my Arduino without any FTDI-USB. Which pin must I plug ?
Help me with this photography:


I have a normal USB cable with 4 pins (and a blindage):
Red: +5V
Black: ground
White: D-
Green: D+

Thanks

Must be taken to be learned 
Now I'll read the datasheet ! Thank you for answers !

Here is the datasheet :
http://docs-europe.electrocomponents.com/webdocs/06dd/0900766b806dda16.pdf

So what can I do  ?

Hello !
I just received my LCD. Except I think I burnt the backlight  ... I dare not do anything and I'd like your opinion.
I connect the 5V and Ground pin A on K. The screen is lit then immediately éteinds. I make a fatal mistake? If yes, which one?
Thanks.

I finally forced a bit and I cut the wires. These new photos to learn more:




I hope that someone can help me now