Electronic circuit that send sms---help please, I am new on forum---

Is this what I need ?

**broken link removed**
**broken link removed**

It's certainly one option, although you could use any microcontroller to feed the GSM modem, it doesn't need to be an Arduino.

That Uno with a will do, though you can get them for half the price with the smd chip.
**broken link removed**

Th 800L is fairly recent and seems to be taking over from the 900 module on ebay.
Have seen a few such projects on the Ardunio forum using the 800L module, seems it very similar in respect of the AT commands.

However you might find using a full shield the easier option if you are not familiar with all the detail of those reduced board.
A shield is more expensive, though only needs a decent 5v 2a power supply to complete.
**broken link removed**

So can I buy this

**broken link removed**

And this

**broken link removed**

And it will work ?

I hope you have seen picture that I have posted earlier (shematic of what I need)

Those boards will work together, BUT you need some wiring /soldering to get them hooked up properly.
Also the Sim800L board needs a separate 5v power supply , as unlike the Arduino board it needs more power than the USB line can supply.

As already suggested a Sim900 shield would make construction easier.

No mention from you about programming , learning C++ and the AT commands; not the easiest task for a beginner.

Think you should address the points / good advice Cowboy mentions in his post #11.

Thanks for the advice but I would really like to learn about arduino...

so I will buy this **broken link removed** with arduino uno and try to connect it , if you have some advice or schematic how to connect it I would like that.

Yes, thats the type of shield I started with.

All the previous posts have offered some good links /tutorials. particularly the Tronixstuff link CowboyBob mentions; that should get you going with the code and boards.

Thank you all for answers , I will try to make it work