diff --git a/README.md b/README.md
index 9f31de4..a87a97d 100644
--- a/README.md
+++ b/README.md
@@ -1,32 +1,53 @@
 # CobraV2
 
+## Table of contents
+
+- [CobraV2](#cobrav2)
+  - [Table of contents](#table-of-contents)
+  - [Installation and compilation](#installation-and-compilation)
+    - [Serial monitor tool](#serial-monitor-tool)
+    - [Monitoring tool](#monitoring-tool)
+  - [Overview](#overview)
+    - [Arduino Sender Format](#arduino-sender-format)
+  - [Modules](#modules)
+    - [10 DOF IMU](#10-dof-imu)
+    - [L76K GPS](#l76k-gps)
+      - [NMEA Sentence](#nmea-sentence)
+    - [NRF24L01+](#nrf24l01)
+  - [Wiring](#wiring)
+    - [10 DOF IMU Sensor](#10-dof-imu-sensor)
+    - [L76K GPS Module](#l76k-gps-module)
+    - [NRF24L01+ Module](#nrf24l01-module)
+  - [Issues / features](#issues--features)
+  - [Sources](#sources)
+
 ## Installation and compilation
 
 ### Serial monitor tool
 
-```bash
+```shell
 git clone https://www.github.com/foglar/cobraV2.git
 cd cobraV2/serial_read
-
-go get "github.com/tarm/serial"
-
-# Building serial read code yourself
 go build .
 ```
 
-### Monitor tool
+> [!TIP]
+> You may have to delete `go.mod` file (if you have other go version) and `go mod init` the project.
+> To install all dependencies you can use `go mod tidy` command or you can mannualy install them by `go get [package]` command.
 
-```bash
+### Monitoring tool
+
+```shell
 git clone https://www.github.com/foglar/cobraV2.git
 cd cobraV2/monitor
-
-# Installing required packages
-go get "github.com/tarm/serial"
-# go get "github.com/gopxl/pixel/v2"
-
 go build .
 ```
 
+> [!IMPORTANT]
+> For cross-compiling you will need to specify a `CC` to compile c-based libraries for pixel2 library.
+> Example command: `CC=x86_64-w64-mingw32-gcc GOOS=windows GOARCH=amd64 CGO_ENABLED=1 go build .`
+> For more information see: [Pixel2 Wiki | Cross Compiling](https://github.com/gopxl/pixel/wiki/%5BWIP%5D-Cross-Compiling)
+
 Upload sender and reciever code on the 2 arduino's
 
 ## Overview
@@ -83,13 +104,12 @@ $GPGAA,HHMMSS.SS,llll.ll,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx
 | $GPGAA | HHMMSS.SS | llll.ll a | yyyyy.yy a | x | xx | x.x | x.x M | x.x M | x.x | xxxx | *hh |
 | $GPGAA | 170834 | 4124.8963, N | 08151.6838, W | 1 | 05 | 1.5 | 280.2, M | -34.0, M | blank | blank | *75 |
 
-Fix Quality:
-
-- 0 = Invalid
-- 1 = GPS fix
-- 2 = DGPS fix
-
-[more about nmea sentences](https://aprs.gids.nl/nmea/)
+> [!TIP]
+> Fix Quality:
+> 0 = Invalid;
+> 1 = GPS fix;
+> 2 = DGPS fix;
+> [more about nmea sentences](https://aprs.gids.nl/nmea/)
 
 ### NRF24L01+
 
@@ -153,3 +173,4 @@ Datasheets, documentation and sources
 - [NRF24L01+ Guide - Guide](https://navody.dratek.cz/navody-k-produktum/arduino-wifi-modul-nrf24l01.html)
 - [NRF24L01+ PA/LNA - Datasheet](doc/nrf24lo1-datasheet.pdf)
 - [NRF24L01+ PA/LNA - Demo code](https://img.gme.cz/files/eshop_data/eshop_data/10/775-034/prg.775-034.1.zip)
+- [Pixel2 (gui library)](https://github.com/gopxl/pixel)
diff --git a/monitor/gui/gui.go b/monitor/gui/gui.go
index daee599..6cd8671 100644
--- a/monitor/gui/gui.go
+++ b/monitor/gui/gui.go
@@ -5,17 +5,25 @@ package gui
 import (
 	"io"
 	"os"
-	"time"
 
 	"github.com/golang/freetype/truetype"
-	"github.com/gopxl/pixel"
-	"github.com/gopxl/pixel/pixelgl"
 	"github.com/gopxl/pixel/text"
-	"golang.org/x/image/colornames"
 	"golang.org/x/image/font"
 )
 
-func loadTTF(path string, size float64) (font.Face, error) {
+// Declare default font and font size
+const FONT string = "gui/JetBrainsMonoNerdFont-Medium.ttf"
+const SIZE float64 = 36
+
+func LoadFont() (*text.Atlas, error) {
+	face, err := LoadTTF(FONT, SIZE)
+	if err != nil {
+		return nil, err
+	}
+	return text.NewAtlas(face, text.ASCII), nil
+}
+
+func LoadTTF(path string, size float64) (font.Face, error) {
 	file, err := os.Open(path)
 	if err != nil {
 		return nil, err
@@ -37,39 +45,3 @@ func loadTTF(path string, size float64) (font.Face, error) {
 		GlyphCacheEntries: 1,
 	}), nil
 }
-
-func run() {
-	cfg := pixelgl.WindowConfig{
-		Title:  "Cobra Monitor",
-		Bounds: pixel.R(0, 0, 1024, 768),
-	}
-	win, err := pixelgl.NewWindow(cfg)
-	if err != nil {
-		panic(err)
-	}
-
-	face, err := loadTTF("gui/JetBrainsMonoNerdFont-Medium.ttf", 36)
-	if err != nil {
-		panic(err)
-	}
-
-	atlas := text.NewAtlas(face, text.ASCII)
-	txt := text.New(pixel.V(100, 500), atlas)
-
-	fps := time.Tick(time.Second / 120)
-
-	for !win.Closed() {
-
-		//txt.WriteString(data)
-
-		win.Clear(colornames.Black)
-		txt.Draw(win, pixel.IM)
-		win.Update()
-
-		<-fps
-	}
-}
-
-func GUI() {
-	pixelgl.Run(run)
-}
diff --git a/monitor/main.go b/monitor/main.go
index 4afa846..297bb26 100644
--- a/monitor/main.go
+++ b/monitor/main.go
@@ -1,33 +1,60 @@
 package main
 
 import (
-	//"fmt"
+	"log"
+
 	gui "foglar/monitor/gui"
-	//p "foglar/monitor/parse"
-	//"foglar/monitor/serial_read"
-	//"log"
+	"foglar/monitor/serial_read"
+
+	"github.com/gopxl/pixel"
+	"github.com/gopxl/pixel/pixelgl"
+	"github.com/gopxl/pixel/text"
+	"golang.org/x/image/colornames"
 )
 
-func main() {
-	//	 // Initialize serial connection
-	//		serialHandler, err := serial_read.NewSerialHandler()
-	//		if err != nil {
-	//			log.Fatal(err)
-	//		}
-	//
-	//		defer serialHandler.Close()
-	//
-	//		for {
-	//			// Read serial data
-	//			data, err := serialHandler.ReadSerial()
-	//			if err != nil {
-	//				log.Fatal(err)
-	//			}
-	//
-	//			fmt.Println("Received data:", data)
-	//			fmt.Println(p.Parser(data))
-	//	}
+func run() {
+	// Initialize serial connection
+	serialHandler, err := serial_read.NewSerialHandler()
+	if err != nil {
+		log.Fatal(err)
+	}
 
-	// Testing GUI interface
-	gui.GUI()
+	defer serialHandler.Close()
+
+	// Create window
+	cfg := pixelgl.WindowConfig{
+		Title:  "Cobra Monitor",
+		Bounds: pixel.R(0, 0, 1024, 768),
+	}
+	win, err := pixelgl.NewWindow(cfg)
+	if err != nil {
+		panic(err)
+	}
+
+	// Load font
+	atlas, err := gui.LoadFont()
+	if err != nil {
+		panic(err)
+	}
+
+	txt := text.New(pixel.V(100, 500), atlas)
+
+	// Window update
+	for !win.Closed() {
+
+		data, err := serialHandler.ReadSerial()
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		txt.WriteString(data)
+
+		win.Clear(colornames.Black)
+		txt.Draw(win, pixel.IM)
+		win.Update()
+	}
+}
+
+func main() {
+	pixelgl.Run(run)
 }
diff --git a/serial_read/go.mod b/serial_read/go.mod
index 442cbc8..943aaad 100644
--- a/serial_read/go.mod
+++ b/serial_read/go.mod
@@ -1,10 +1,10 @@
-module main
+module foglar/serial_read
 
-go 1.21.6
-
-require github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07
+go 1.20
 
 require (
-	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	golang.org/x/sys v0.16.0 // indirect
+	github.com/mitchellh/go-homedir v1.1.0
+	github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07
 )
+
+require golang.org/x/sys v0.17.0 // indirect
diff --git a/serial_read/go.sum b/serial_read/go.sum
index 15cdf1e..ae21701 100644
--- a/serial_read/go.sum
+++ b/serial_read/go.sum
@@ -2,5 +2,5 @@ github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07 h1:UyzmZLoiDWMRywV4DUYb9Fbt8uiOSooupjTq10vpvnU=
 github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
-golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
-golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=