user15817: I am planning to make an SMS notification to my phone with Arduino Uno via a push of a button.
I have an Arduino Uno C520A Embedded System. Is it possible to do so with this model ? If yes, which WIFI module should I get ? 
I just want to make an API request to the web through the push of a button.

user15779: It is possible if your provider has a sms gateway e-mail-address. Just google which it is for your provider (e.g. number@tmomail.net for T-Mobile (US)). And there should be a lot of tutorial about how to send an email with an arduino.
Every wifi-module with arduino support will work if your WiFi is a standart 3.6Ghz. And yes it should work with any arduino compatible microcontroller.

user13940: Arduino uno is only the processor, you will need a Ethernet shield or Wifi shield to connect to the internet.
I would suggest Ethernet as it is less pain to configure and no drop of connection.
Then you will need to buy a sms gateway, this one looks pretty cool as they have good http api.
By using the Arduino Ethernet sample, you will need to send a http request to the server when the button has been pressed.

15817: <p>I am planning to make an SMS notification to my phone with Arduino Uno via a push of a button.</p>

<p>I have an Arduino Uno C520A Embedded System. Is it possible to do so with this model ? If yes, which WIFI module should I get ? </p>

<p>I just want to make an API request to the web through the push of a button.</p>
 15779: <p>It is possible if your provider has a sms gateway e-mail-address. Just google which it is for your provider (e.g. number@tmomail.net for T-Mobile (US)). And there should be a lot of tutorial about how to send an email with an arduino.</p>

<p>Every wifi-module with arduino support will work if your WiFi is a standart 3.6Ghz. And yes it should work with any arduino compatible microcontroller.</p>
 13940: <p>Arduino uno is only the processor, you will need a Ethernet shield or Wifi shield to connect to the internet.
I would suggest Ethernet as it is less pain to configure and no drop of connection.</p>

<p>Then you will need to buy a sms gateway, <a href="http://www.smsglobal.com/http-api/" rel="nofollow">this one</a> looks pretty cool as they have good http api.</p>

<p>By using the Arduino Ethernet sample, you will need to send a http request to the server when the button has been pressed.</p>
