I'm building a projects thats running on a arduino pro micro. I need it to create a http get response and then have it to read the response and give me certain part of the json response. What module is compatible with my arduino and capable of doing this? It has to be wifi.
Anyone?
The ESP8266 is a great chip. If your project doesn't need more than 11 I/O pins, you may not even need the Pro Micro.
What are the other requirements?
Pieter
I need the pro micro because I need the atmega capability of acting as a keyboard.
Can this one do the job?
Ya, though that's a rather pricey source. Similar modules are like $4 or so on ebay, including shipping.
Old model too, with only 1Mb flash.
The ESP-12 has 4Mb.
Leo..
I'd recommend an ESP-12 or ESP-07 or similar (+breakout board). They give you access to all the GPIO pins.
Pieter
Wawa:
Old model too, with only 1Mb flash.
The ESP-12 has 4Mb.
Leo..
He means MB, not Mb 
Doh. Shouldn't post when you're not fully awake yet.
Need more coffee.
Leo..
I dnot need the gpio. Only the get request. They come fully working or I need to flash them with firmware? ( the I sent the link)
What library do u recommend?
andre123aei:
I dnot need the gpio. Only the get request.
Maybe not now, but you may need it in the future. There's no reason to choose an ESP-01 over an ESP-12.
Most modules come with AT firmware, but you can flash your own FW if you want to.
I'm not familiar with AT libraries.
Pieter
a...
the ESP8266 chip has the ability to connect to WiFi. the chip comes on many different boards. one has 8 pins and you have to provide power for it.
There is board called a NodeMCU that is more like a NANO in that it is a long chip and it has on-board power regulator and USB.
I think that all the inputs are 3.3volts on theses board, so simple switch detection and lighting LED's is not complicated. controlling transistors or FET's to control more voltage is also not hard.
a NodeMCU on e-bay is about $4.00 USD
if you only want the chip to be WiFi, you can buy the stripped down version the ESP-01 for about the same price.
one note about the node-mcu. version 1 and version 2 are made by the same people. version 2 is a little more narrow and can fit on a protoboard with exactly one row of holes available. the version 1 is too wide.
the version-3 is made by someone else and is a copy of the version1, being too wide for a protoboard.
There is also a similar board a WeMos D1 mini. these also have a usb connection so you can program these just like your Arduino.
there is also a WeMos D1 R1 this is the same shape as the UNO in case you want to go that way.
a note about the analogue. there is only 1 and it has a lot of restrictions. do not buy this chip for analogue use unless you take the extra time and effort to figure it out. in some of the variants, there is a voltage divider built in, but the adjoining pin (un-marked) bypasses one of the resistors. if you really want analog, get a separate analog chip
as a note this chip has been around for a short time, but there are lots of variations. some allow you to use only a very few pins, others offer a lot of pins. some have small memory, some have large memory.
if all you need to connect your existing project to wifi, I would search for a tutorial and if you find one you like, it will have code and a device that the author uses. I would recommend you use that as it would help you through each step, have code and someone who done the hard work for your.