diff --git a/Cargo.toml b/Cargo.toml
index 9789221..65d03bf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,8 +11,11 @@ config = "0.13.3"
 ctrlc = "3.4.0"
 env_logger = "0.10.0"
 helios-dac = { version = "0.1", default-features = false, features = ["native"] }
+	   	       
 log = "0.4.18"
 redis = "0.23.0"
 ron = "0.8.0"
 serde = { version = "1.0.163", features = ["derive"] }
 toml = "0.7.4"
+homography = { git = "https://github.com/azazdeaz/homography" }
+nalgebra = "0.32.2"
diff --git a/src/device/dummy.rs b/src/device/dummy.rs
index 8a9ed9b..e4c9e42 100644
--- a/src/device/dummy.rs
+++ b/src/device/dummy.rs
@@ -1,6 +1,7 @@
 use crate::device::{Device, Status, PlaybackState};
-use crate::errors::{LJError, LJResult};
+use crate::errors::LJResult;
 use crate::point::Point;
+use log::debug;
 
 pub struct DummyDevice {
     state: PlaybackState
@@ -27,7 +28,8 @@ impl Device for DummyDevice {
 	        line: Vec<Point>,
 	        speed: u32,
 	) -> LJResult<()> {
-		Ok(())
+	    debug!("Draw Line at speed {speed} : {:?}", line);
+	    Ok(())
 	}
 
 	fn stop(&mut self) -> LJResult<()> {
diff --git a/src/redis_ctrl.rs b/src/redis_ctrl.rs
index e7e80fa..ee2efe7 100644
--- a/src/redis_ctrl.rs
+++ b/src/redis_ctrl.rs
@@ -113,6 +113,7 @@ impl RedisCtrl {
 	    // Get new EDH
 	    let edh : String = self.connection.get("/EDH/0")?;
 	    let edh : Vec<Vec<f32>> = from_str(&edh)?;
-	    Ok(EDH { matrix: edh })
+	    let edh = EDH::new(edh)?;
+	    Ok(edh)
 	}
 }
diff --git a/src/worldstate.rs b/src/worldstate.rs
index 41eeef7..38b1bd0 100644
--- a/src/worldstate.rs
+++ b/src/worldstate.rs
@@ -1,13 +1,19 @@
 use crate::point::Color;
-
+use nalgebra::base::Matrix3;
+use crate::errors::LJResult;
 #[derive(Debug, Default)]
 pub struct EDH {
-	pub matrix: Vec<Vec<f32>> //Matrix3
+	pub matrix: Matrix3<f32>
 }
 
 
 impl EDH {
-
+    pub fn new(vec: Vec<Vec<f32>>) -> LJResult<EDH> {
+	let matrix = Matrix3::new(vec[0][0], vec[0][1], vec[0][2],
+				  vec[1][0], vec[1][1], vec[1][2],
+				  vec[2][0], vec[2][1], vec[2][2]);
+	Ok(EDH { matrix })
+    }
 }
 
 #[derive(Debug, Default)]
@@ -20,6 +26,6 @@ pub struct WorldState {
 	pub color: Color
 }
 
-impl WorldState{
+impl WorldState {
 
 }