diff --git a/LICENSE b/LICENSE
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index 0000000..341c30b
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,166 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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diff --git a/README.md b/README.md
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+++ b/README.md
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+# Arduino IDE based CCITT CRC16 calculator - uCRC16Lib #
+
+## What is this repository for? ##
+
+Tiny and cross-device compatible CCITT CRC16 calculation.
+
+Supports any microcontroller.
+
+
+
+## Usage ##
+
+This library is used with only static methods, you don't need to (and can't) initialize any class object.
+
+You have these methods:
+ - *uCRC16Lib::calculate(char * data_to_be_encoded, uint16_t size);* : Returns CRC16 in a uint16_t
+ - *uCRC16Lib::crc_ok* : uint16_t with CRC16 value of "T 0xD9 0xE4" (without spaces)
+
+## How do I get set up? ##
+
+You can get it from Arduino libraries directly, searching by uCRC16Lib.
+
+For manual installation:
+
+ * Get the ZIP from releases link: https://github.com/Naguissa/uCRC16Lib/releases
+ * Rename to uCRC16Lib.zip
+ * Install library on Arduino
+
+## Examples ##
+
+Included on example folder, available on Arduino IDE.
+
+
+
+## Who do I talk to? ##
+
+ * [Naguissa](https://github.com/Naguissa)
+ * https://www.foroelectro.net/electronica-digital-microcontroladores-f8/utimerlib-libreria-arduino-para-eventos-temporizad-t191.html
+
diff --git a/contributors.txt b/contributors.txt
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--- /dev/null
+++ b/contributors.txt
@@ -0,0 +1,2 @@
+Naguissa - https://github.com/Naguissa
+
diff --git a/examples/uCRC16Lib_example/uCRC16Lib_example.ino b/examples/uCRC16Lib_example/uCRC16Lib_example.ino
new file mode 100644
index 0000000..e19b3e0
--- /dev/null
+++ b/examples/uCRC16Lib_example/uCRC16Lib_example.ino
@@ -0,0 +1,61 @@
+/**
+ * Tiny and cross-device compatible CCITT CRC16 calculator library - uCRC16Lib - Example
+ *
+ * @author Naguissa
+ * @url https://www.github.com/Naguissa/uCRC16Lib
+ * @url https://www.foroelectro.net
+ */
+
+#include "Arduino.h"
+#include "uCRC16Lib.h"
+
+
+
+
+void setup() {
+    Serial.begin(57600);
+    while (!Serial) {
+      ; // wait for serial port to connect. Needed for Leonardo only
+    }
+
+	uint16_t crc;
+	char string[40];
+	string[0] = 'T';
+	string[1] = (unsigned char)0xd9;
+	string[2] = (unsigned char)0xe4;
+	string[3] = NULL;
+
+	Serial.print("The crc of \"T\" is 0xD9E4. crc16 returned ");
+	Serial.println(uCRC16Lib::calculate(string, 1), HEX);
+	Serial.println();
+
+	Serial.print("The crc of \"T 0xD9 0xE4\" is ");
+	Serial.print(uCRC16Lib::calculate(string, 3), HEX);
+	Serial.print(". The value of crc_ok is ");
+	Serial.println(uCRC16Lib::crc_ok, HEX);
+	Serial.println();
+
+	strcpy(string, "THE,QUICK,BROWN,FOX,0123456789");
+	Serial.print("The crc of \"");
+	Serial.print(string);
+	Serial.print("\" is 0x6E20. crc16 returned ");
+	Serial.println(uCRC16Lib::calculate(string, strlen(string)), HEX);
+	Serial.println();
+
+	string[0] = (unsigned char)0x03;
+	string[1] = (unsigned char)0x3F;
+
+	Serial.print("CCITT Recommendation X.25 (1984) Appendix I example:");
+	Serial.print("\tThe crc of 0x03 0x3F is 0x5BEC. crc16 returned ");
+	Serial.println(uCRC16Lib::calculate(string, 2), HEX);
+	Serial.println();
+
+	Serial.println(" - END -");
+	Serial.println();
+
+}
+
+
+void loop() {
+}
+
diff --git a/extras/data sources.txt b/extras/data sources.txt
new file mode 100644
index 0000000..898fbef
--- /dev/null
+++ b/extras/data sources.txt	
@@ -0,0 +1,2 @@
+Base algorithm
+ - http://www.drdobbs.com/implementing-the-ccitt-cyclical-redundan/199904926
diff --git a/library.properties b/library.properties
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--- /dev/null
+++ b/library.properties
@@ -0,0 +1,11 @@
+name=uCRC16Lib
+version=1.0.0
+author=Naguissa <naguissa@foroelectro.net>
+maintainer=Naguissa <naguissa@foroelectro.net>
+sentence=Tiny and cross-device compatible CCITT CRC16 calculator library - uCRC16Lib
+paragraph=Supports any architecture
+category=Data Processing
+url=https://github.com/Naguissa/uCRC16Lib
+architectures=*
+includes=uCRC16Lib.h
+
diff --git a/src/uCRC16Lib.cpp b/src/uCRC16Lib.cpp
new file mode 100644
index 0000000..02ba918
--- /dev/null
+++ b/src/uCRC16Lib.cpp
@@ -0,0 +1,50 @@
+/**
+ * Tiny and cross-device compatible CCITT CRC16 calculator library - uCRC16Lib
+ *
+ * @copyright Naguissa
+ * @author Naguissa
+ * @email naguissa@foroelectro.net
+ * @version 1.0.0
+ * @created 2018-04-21
+ */
+#include "uCRC16Lib.h"
+
+/**
+ * Constructor
+ *
+ * Nothing to do here
+ */
+uCRC16Lib::uCRC16Lib() {}
+
+
+/**
+ * Calculate CRC16 function
+ *
+ * @param	data_p	*char	Pointer to data
+ * @param	length	uint16_t	Length, in bytes, of data to calculate CRC16 of. Should be the same or inferior to data pointer's length.
+ */
+uint16_t uCRC16Lib::calculate(char *data_p, uint16_t length) {
+	uint8_t i;
+	uint16_t data;
+	uint16_t crc = 0xffff;
+
+	if (length == 0) {
+		return (~crc);
+	}
+
+	do {
+		for (i = 0, data = (uint16_t) 0xff & *data_p++; i < 8; i++, data >>= 1) {
+			if ((crc & 0x0001) ^ (data & 0x0001)) {
+				crc = (crc >> 1) ^ uCRC16Lib_POLYNOMIAL;
+			} else {
+				crc >>= 1;
+			}
+		}
+	} while (--length);
+	crc = ~crc;
+	data = crc;
+	crc = (crc << 8) | (data >> 8 & 0xFF);
+	return (crc);
+}
+
+
diff --git a/src/uCRC16Lib.h b/src/uCRC16Lib.h
new file mode 100644
index 0000000..242827b
--- /dev/null
+++ b/src/uCRC16Lib.h
@@ -0,0 +1,29 @@
+/**
+ * Tiny and cross-device compatible CCITT CRC16 calculator library.
+ *
+ * @copyright Naguissa
+ * @author Naguissa
+ * @email naguissa@foroelectro.net
+ * @version 1.0.0
+ * @created 2018-04-21
+ */
+#ifndef _uCRC16Lib_
+	#define _uCRC16Lib_
+
+	#include <Arduino.h>
+
+	#define uCRC16Lib_POLYNOMIAL 0x8408
+
+	class uCRC16Lib {
+		public:
+			static uint16_t calculate(char *, uint16_t);
+			const static uint16_t crc_ok = 0x470F;
+
+		private:
+			// Static library, no need to construct objects
+			uCRC16Lib();
+
+	};
+
+#endif
+