diff --git a/Cargo.lock b/Cargo.lock
index a424553..e3599a9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -309,6 +309,17 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee8025cf36f917e6a52cce185b7c7177689b838b7ec138364e50cc2277a56cf4"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "gio"
 version = "0.9.1"
@@ -345,9 +356,9 @@ dependencies = [
 
 [[package]]
 name = "glib"
-version = "0.10.2"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f11a45bde4cf9567653a14ff96cdbb01e6d2a89651746dbc118319dfdac433e"
+checksum = "0c685013b7515e668f1b57a165b009d4d28cb139a8a989bbd699c10dad29d0c5"
 dependencies = [
  "bitflags",
  "futures-channel",
@@ -539,9 +550,9 @@ dependencies = [
 
 [[package]]
 name = "nix"
-version = "0.14.1"
+version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c722bee1037d430d0f8e687bbdbf222f27cc6e4e68d5caf630857bb2b6dbdce"
+checksum = "dd0eaf8df8bab402257e0a5c17a254e4cc1f72a93588a1ddfb5d356c801aa7cb"
 dependencies = [
  "bitflags",
  "cc",
@@ -617,9 +628,9 @@ checksum = "d36492546b6af1463394d46f0c834346f31548646f6ba10849802c9c9a27ac33"
 
 [[package]]
 name = "png"
-version = "0.16.7"
+version = "0.16.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dfe7f9f1c730833200b134370e1d5098964231af8450bce9b78ee3ab5278b970"
+checksum = "3c3287920cb847dee3de33d301c463fba14dda99db24214ddf93f83d3021f4c6"
 dependencies = [
  "bitflags",
  "crc32fast",
@@ -627,6 +638,12 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+
 [[package]]
 name = "proc-macro-crate"
 version = "0.1.5"
@@ -713,6 +730,28 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "rand"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a76330fb486679b4ace3670f117bbc9e16204005c4bde9c4bd372f45bed34f12"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core 0.6.0",
+ "rand_hc",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.6.0",
+]
+
 [[package]]
 name = "rand_core"
 version = "0.3.1"
@@ -728,6 +767,24 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c33a3c44ca05fa6f1807d8e6743f3824e8509beca625669633be0acbdf509dc"
 
+[[package]]
+name = "rand_core"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8b34ba8cfb21243bd8df91854c830ff0d785fff2e82ebd4434c2644cb9ada18"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "rand_hc"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3190ef7066a446f2e7f42e239d161e905420ccab01eb967c9eb27d21b2322a73"
+dependencies = [
+ "rand_core 0.6.0",
+]
+
 [[package]]
 name = "rdrand"
 version = "0.4.0"
@@ -763,9 +820,9 @@ checksum = "96fe57af81d28386a513cbc6858332abc6117cfdb5999647c6444b8f43a370a5"
 
 [[package]]
 name = "serialport"
-version = "3.3.0"
+version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b8d3ecaf58010bedccae17be55d4ed6f2ecde5646fc48ce8c66ea2d35a1419c"
+checksum = "22f37409d980045734250d679750bdf11bd875fec5bb5417dd21bb75d04d31a1"
 dependencies = [
  "CoreFoundation-sys",
  "IOKit-sys",
@@ -876,6 +933,7 @@ dependencies = [
  "gtk",
  "libmath",
  "png",
+ "rand 0.8.0",
  "serialport",
 ]
 
@@ -909,6 +967,12 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 
+[[package]]
+name = "wasi"
+version = "0.9.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
diff --git a/Cargo.toml b/Cargo.toml
index 7f7395d..a4d263e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,9 +8,10 @@ edition = "2018"
 
 [dependencies]
 libmath = "0.2.1"
-serialport = "3.3.0"
+serialport = "4.0.0"
 gtk = "0.9.2"
 gio = "0.9.1"
-glib = "0.10.2"
-png = "0.16.7"
+glib = "0.10.3"
+png = "0.16.8"
 cairo-rs = { version = "0.9.1", features = ["png"] }
+rand = "0.8.0"
diff --git a/src/graph.rs b/src/graph.rs
index 95e278f..468dc45 100644
--- a/src/graph.rs
+++ b/src/graph.rs
@@ -1,5 +1,6 @@
 use gtk::prelude::*;
 use gtk::DrawingArea;
+use rand::prelude::*;
 use std::rc::Rc;
 
 pub struct Graph {
@@ -8,7 +9,21 @@ pub struct Graph {
     scale_x_end: f64,
     scale_y_start: f64,
     scale_y_end: f64,
-    points: Vec<(f64,f64)>
+    lines: Vec<Line>
+}
+
+pub struct Line {
+    points: Vec<(f64,f64)>,
+    color: (f64, f64, f64)
+}
+
+impl Line {
+    pub fn new(r: f64, g: f64, b: f64, points: Vec<(f64,f64)>) -> Self {
+        Line {
+            points,
+            color: (r,g,b)
+        }
+    }
 }
 
 impl Graph {
@@ -17,7 +32,7 @@ impl Graph {
         scale_x_end: f64,
         scale_y_start: f64,
         scale_y_end: f64,
-        points: Vec<(f64,f64)>) -> Rc<Graph> {
+        lines: Vec<Line>) -> Rc<Self> {
 
         let graph = Rc::new(Graph {
             area,
@@ -25,7 +40,7 @@ impl Graph {
             scale_x_end,
             scale_y_start,
             scale_y_end,
-            points
+            lines
         });
 
         let graph_tmp = Rc::clone(&graph);
@@ -76,12 +91,15 @@ impl Graph {
 
         ctx.set_line_width(2.0);
         ctx.set_line_cap(cairo::LineCap::Round);
-        for p in graph.points.iter().skip(1).enumerate() {
-            let xp = graph.points[p.0];
-            ctx.move_to(((cell_size as f64)*(xp.0 - graph.scale_x_start))/h_scale + 40.0, height - ((cell_size as f64)*(xp.1 - graph.scale_y_start))/v_scale - 20.0);
-            ctx.line_to(((cell_size as f64)*(p.1.0 - graph.scale_x_start))/h_scale + 40.0, height - ((cell_size as f64)*(p.1.1 - graph.scale_y_start))/v_scale - 20.0);
+        for line in graph.lines.iter() {
+            ctx.set_source_rgb(line.color.0, line.color.1, line.color.2);
+            for p in line.points.iter().skip(1).enumerate() { 
+                let xp = line.points[p.0];
+                ctx.move_to(((cell_size as f64)*(xp.0 - graph.scale_x_start))/h_scale + 40.0, height - ((cell_size as f64)*(xp.1 - graph.scale_y_start))/v_scale - 20.0);
+                ctx.line_to(((cell_size as f64)*(p.1.0 - graph.scale_x_start))/h_scale + 40.0, height - ((cell_size as f64)*(p.1.1 - graph.scale_y_start))/v_scale - 20.0);
+            }
+            ctx.stroke();
         }
-        ctx.stroke();
     }
 
     fn draw_boxes(ctx: &cairo::Context, area_width: f64, area_height: f64, src_x: f64, src_y: f64, cell_size: f64, color: f64) {
diff --git a/src/lib.rs b/src/lib.rs
index 9cc01c0..ef43a34 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,22 +1,24 @@
 mod graph;
 
 use gtk::prelude::*;
-use graph::Graph;
+use graph::{Graph, Line};
 
-use std::sync::Arc;
+use std::sync::{Arc, Mutex};
 
 pub enum Status {
     JAGRIT, SAYAN, AVRODTIH
 }
 
 pub struct Config {
-    status: Status
+    status: Status,
+    bondrate: i32
 }
 
 impl Config {
     pub fn new() -> Config {
         Config {
-            status: Status::AVRODTIH
+            status: Status::AVRODTIH,
+            bondrate: 9600
         }
     }
 }
@@ -25,41 +27,66 @@ enum Message {
     UpdateLabel(String),
 }
 
-pub fn build_ui(app: &gtk::Application, config: Arc::<Config>) {
+pub fn build_ui(app: &gtk::Application, config: Arc::<Mutex::<Config>>) {
     let builder = gtk::Builder::from_file("ui/main_window.glade");
 
     let win = builder.get_object::<gtk::ApplicationWindow>("win").expect("Resource file missing!");
     win.set_application(Some(app));
+    let bar = builder.get_object::<gtk::Statusbar>("status_bar").expect("Resource file missing!");
 
-    let graph = Graph::new(
+    let _ = Graph::new(
         builder.get_object::<gtk::DrawingArea>("draw_area").expect("Resource file missing!"),
-        0.0, 100.0,
-        0.0, 100.0,
-        vec![(10.0,10.0),(20.0,20.0)]
+        0.0, 30.0,
+        0.0, 50.0,
+        vec![
+            Line::new(1.0,1.0,1.0,vec![(10.0,10.0),(20.0,20.0)]),
+            Line::new(1.0,0.0,1.0,vec![(15.0,15.0),(50.0,25.0)])
+        ]
     );
 
     win.show_all();
 
+    let bondrate = builder.get_object::<gtk::ComboBoxText>("log_area").expect("Resource file missing!");
+    
+    let tmp_bar =  bar.clone();
+    let tmp_config = Arc::clone(&config);
+    bondrate.connect_changed(move |cbx| {
+        match tmp_config.lock() {
+            Ok(mut config) => 
+                config.bondrate = match cbx.get_active_text() {
+                Some(txt) => txt.to_string().parse::<i32>().unwrap_or(9600),
+                None => 9600 
+            },
+            Err(_) => {
+                tmp_bar.push(1, "Failed to change bondrate!");
+            }
+        }
+    });
+
     let (sender, receiver) = glib::MainContext::channel(glib::PRIORITY_DEFAULT);
     
     let tmpconfig = Arc::clone(&config);
     std::thread::spawn(move || {
-        match tmpconfig.status {
+        match tmpconfig.lock().unwrap().status {
             Status::JAGRIT => {
                 sender.send(Message::UpdateLabel(String::from("jagrit"))).unwrap();
             }, Status::SAYAN => {
-                sender.send(Message::UpdateLabel(String::from("sayan"))).unwrap();
+                
             }, Status::AVRODTIH => {
                 sender.send(Message::UpdateLabel(String::from("avrodhit"))).unwrap();
             }
         }
     });
 
-    let bar = builder.get_object::<gtk::Statusbar>("status_bar").expect("Resource file missing!");
+
+    let log_area = builder.get_object::<gtk::TextView>("log_area").expect("Resource file missing!");
     receiver.attach(None, move |msg| {
         match msg {
             Message::UpdateLabel(text) => {
                 bar.push(1, &text);
+                let buf = log_area.get_buffer()
+                .expect("Couldn't get window");
+                buf.insert(&mut buf.get_end_iter(), &text);
             },
         }
         glib::Continue(true)
diff --git a/src/main.rs b/src/main.rs
index d7ce8f8..7476050 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,12 +1,12 @@
 use gio::prelude::*;
 use std::env::args;
-use std::sync::Arc;
+use std::sync::{Arc, Mutex};
 
 fn main() {
     let app = gtk::Application::new(Some("sng.trangm"), Default::default())
     .expect("Failed to initiate gtk");
 
-    let config = Arc::new(trangam::Config::new());
+    let config = Arc::new(Mutex::new(trangam::Config::new()));
 
     app.connect_activate(move |app| {
         let config = Arc::clone(&config);
diff --git a/tests/serial_port_test.rs b/tests/serial_port_test.rs
index 61f6926..0ac4c33 100644
--- a/tests/serial_port_test.rs
+++ b/tests/serial_port_test.rs
@@ -1,13 +1,14 @@
 use std::io::prelude::*;
 use std::io::BufReader;
+use std::time::Duration;
 
 #[test]
 fn start() {
     let ports = serialport::available_ports();
     println!("{:?}",ports);
 
-    let p = serialport::open("/dev/ttyUSB0")
-    .unwrap();
+    let p = serialport::new("/dev/ttyUSB0", 9600).timeout(Duration::from_millis(10))
+    .open().expect("Failed to open port");
 
     let mut read = BufReader::new(p);
     let mut buf = String::new();
@@ -15,7 +16,7 @@ fn start() {
         match read.read_line(&mut buf) {
             Ok(_) => 
             {
-                print!("{} seconds", buf.parse::<f64>().unwrap() / 60.0);
+                print!("{}", buf);
                 buf.clear();
             },
             Err(_) => {}
diff --git a/ui/main_window.glade b/ui/main_window.glade
index 123d8bf..4a294d2 100644
--- a/ui/main_window.glade
+++ b/ui/main_window.glade
@@ -191,8 +191,7 @@
                 <property name="visible">True</property>
                 <property name="can-focus">False</property>
                 <child>
-                  <object class="GtkComboBox">
-                    <property name="width-request">200</property>
+                  <object class="GtkComboBoxText">
                     <property name="visible">True</property>
                     <property name="can-focus">False</property>
                   </object>
@@ -229,6 +228,25 @@
                 <property name="homogeneous">True</property>
               </packing>
             </child>
+            <child>
+              <object class="GtkToolItem">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <child>
+                  <object class="GtkComboBoxText">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <items>
+                      <item id="&lt;Enter ID&gt;" translatable="yes">9600</item>
+                    </items>
+                  </object>
+                </child>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="homogeneous">True</property>
+              </packing>
+            </child>
           </object>
           <packing>
             <property name="expand">False</property>
@@ -263,7 +281,7 @@
                 <property name="vexpand">True</property>
                 <property name="shadow-type">in</property>
                 <child>
-                  <object class="GtkTextView">
+                  <object class="GtkTextView" id="log_area">
                     <property name="visible">True</property>
                     <property name="can-focus">True</property>
                     <property name="monospace">True</property>
diff --git a/ui/main_window.glade~ b/ui/main_window.glade~
index 123d8bf..4a294d2 100644
--- a/ui/main_window.glade~
+++ b/ui/main_window.glade~
@@ -191,8 +191,7 @@
                 <property name="visible">True</property>
                 <property name="can-focus">False</property>
                 <child>
-                  <object class="GtkComboBox">
-                    <property name="width-request">200</property>
+                  <object class="GtkComboBoxText">
                     <property name="visible">True</property>
                     <property name="can-focus">False</property>
                   </object>
@@ -229,6 +228,25 @@
                 <property name="homogeneous">True</property>
               </packing>
             </child>
+            <child>
+              <object class="GtkToolItem">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <child>
+                  <object class="GtkComboBoxText">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <items>
+                      <item id="&lt;Enter ID&gt;" translatable="yes">9600</item>
+                    </items>
+                  </object>
+                </child>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="homogeneous">True</property>
+              </packing>
+            </child>
           </object>
           <packing>
             <property name="expand">False</property>
@@ -263,7 +281,7 @@
                 <property name="vexpand">True</property>
                 <property name="shadow-type">in</property>
                 <child>
-                  <object class="GtkTextView">
+                  <object class="GtkTextView" id="log_area">
                     <property name="visible">True</property>
                     <property name="can-focus">True</property>
                     <property name="monospace">True</property>