diff --git a/.gitignore b/.gitignore
index 0e205d4..de3276d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 
 # Configuration file 
-Settings.*
+settings.*
 
 # Generated by Cargo
 # will have compiled files and executables
diff --git a/Cargo.toml b/Cargo.toml
index ccbd534..18f311d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,3 +14,4 @@ log = "0.4.18"
 redis = "0.23.0"
 ron = "0.8.0"
 serde = { version = "1.0.163", features = ["derive"] }
+toml = "0.7.4"
diff --git a/copyme.Settings.toml b/copyme.settings.toml
similarity index 76%
rename from copyme.Settings.toml
rename to copyme.settings.toml
index d0055a3..f440bc0 100644
--- a/copyme.Settings.toml
+++ b/copyme.settings.toml
@@ -18,3 +18,11 @@ id = 0
 # For Etherdream. IP of the DAC
 # [dac.etherdream]
 # url = "192.168.1.68"
+
+[[transformers]]
+[transformers.translate]
+x = 2000
+y = 2000
+[[transformers]]
+[transformers.replicate]
+Until = 48
diff --git a/src/conf.rs b/src/conf.rs
index a92dcff..fe5e762 100644
--- a/src/conf.rs
+++ b/src/conf.rs
@@ -1,13 +1,16 @@
 use config::Config;
 use serde::{Serialize,Deserialize};
-use crate::errors::LJResult;
+use crate::errors::{LJError,LJResult};
+use crate::transformer;
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Conf {
     pub laser_id: u8,
     pub debug: bool,
     pub redis_url: String,
-    pub dac: DacFamily
+    pub dac: DacFamily,
+    #[serde(default)]
+    pub transformers: Vec<TransformConf>
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
@@ -28,13 +31,49 @@ pub struct EtherDreamConf {
     pub url: String
 }
 
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub enum TransformConf {
+    #[serde(rename = "translate")] 
+    Translate(transformer::Translate),
+    #[serde(rename = "replicate")] 
+    Replicate(transformer::Replicate)
+}
+
+
 impl Conf {
     pub fn new(path: &str) -> LJResult<Conf> {
 	let settings = Config::builder()
             .add_source(config::File::with_name(path))
 	    .build()?;
         
-	let conf : Conf = settings.try_deserialize()?;
+	let conf : Conf = settings.try_deserialize().map_err(LJError::Config)?;
 	Ok(conf)
     }
+
+    pub fn get_transformers(&self) -> Vec<Box<dyn transformer::Transformers>> {
+	let mut v = vec![];
+	for t in &self.transformers {
+	    let t : Box<dyn transformer::Transformers> = match t {
+		TransformConf::Translate(t) => Box::new(*t),
+		TransformConf::Replicate(r) => Box::new(*r)
+	    };
+	    v.push(t);
+	}
+	v
+    }
+
+    #[allow(dead_code)]
+    pub fn dump() {
+	let conf = Conf { laser_id: 0,
+			  debug: true,
+			  redis_url: "redis://127.0.0.1:6379/".to_string(),
+			  dac: DacFamily::Helios(HeliosConf { id: 0 }),
+			  transformers: vec![
+			      TransformConf::Translate(transformer::Translate::new(2000.0,2000.0)),
+			      TransformConf::Replicate(transformer::Replicate::Until(48))
+			  ]
+	};
+	let s = toml::to_string(&conf).unwrap();
+	println!("{}", s);
+    }
 }
diff --git a/src/device/mod.rs b/src/device.rs
similarity index 90%
rename from src/device/mod.rs
rename to src/device.rs
index 70a3916..d85d95a 100644
--- a/src/device/mod.rs
+++ b/src/device.rs
@@ -2,7 +2,7 @@ use crate::point::Point;
 
 mod helios;
 
-use crate::conf::{Conf, DacFamily, EtherDreamConf, HeliosConf};
+use crate::conf::{Conf, DacFamily, /*EtherDreamConf, HeliosConf*/};
 use crate::device::helios::HeliosDevice;
 use crate::errors::LJResult;
 
@@ -29,7 +29,7 @@ pub struct Status {
 pub trait Device {
     fn status( &self ) -> Status;
     fn draw(
-	    &self,
+	    &mut self,
 	    frame: Vec<Point>,
     	speed: u32,
     ) -> LJResult<()> ;
diff --git a/src/device/common.rs b/src/device/common.rs
new file mode 100644
index 0000000..020ad4d
--- /dev/null
+++ b/src/device/common.rs
@@ -0,0 +1,31 @@
+
+/*
+self.protocol_version,
+self.le_state,
+self.playback_state,
+self.source,
+self.le_flags,
+self.playback_flags,
+self.source_flags,
+self.fullness,
+self.point_rate,
+self.point_count
+*/
+
+pub struct Status {
+    pub active: bool,
+    pub last_traced_at: String,
+    pub properties: Vec<String>
+}
+
+pub trait Device {
+    /**
+    fn intersect(&self, orig : &Vec3, dir : &Vec3) -> Option<Float>;
+    fn get_surface(&self, v : &Vec3) -> Vec3;
+    fn get_normal(&self, v : &Vec3) -> Vec3;
+    fn get_material(&self) -> &dyn Material;
+    **/
+
+    fn status( &self ) -> Status;
+
+}
diff --git a/src/device/helios.rs b/src/device/helios.rs
index a090209..f607bb8 100644
--- a/src/device/helios.rs
+++ b/src/device/helios.rs
@@ -5,10 +5,10 @@
 use helios_dac::{NativeHeliosDac, NativeHeliosDacController};
 use helios_dac::{
 	// Coordinate,
-	Color,
+	// Color,
 	DeviceStatus,
 	Frame,
-	Point as HeliosPoint,
+	// Point as HeliosPoint,
 };
 use crate::conf::HeliosConf;
 use crate::device::{Device, Status};
@@ -29,29 +29,29 @@ impl HeliosDevice {
 			return Err(Box::new(LJError::HeliosDeviceMissing));
 		};
 		let dac = device.open()?;
-		Ok(Self {
-			conf: (*conf).clone(),			dac,
-		})
+		Ok(Self { conf: (*conf).clone(), dac })
 	}
 }
 
 impl Device for HeliosDevice {
 	fn status(&self) -> Status {
-		return Status {
+		Status {
 			active: true,
 			last_traced_at: "now".to_string(),
 			properties: vec!["foo".to_string()],
-		};
+		}
 	}
 
-	fn draw(&self,
+	fn draw(&mut self,
 	        line: Vec<Point>,
 	        speed: u32,
 	) -> LJResult<()> {
-		while let Ok(DeviceStatus::NotReady) = self.dac.status() {}
+		while let Ok(DeviceStatus::NotReady) = self.dac.status() {
+		}
 
 		let points: Vec<helios_dac::Point> = line.into_iter().map(|p| p.into()).collect();
 		let frame = Frame::new(speed, points);
+		self.dac.write_frame(frame.clone())?;
 		Ok(())
 	}
 
diff --git a/src/errors.rs b/src/errors.rs
index 45363e5..ff40f33 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -1,11 +1,13 @@
 use std::error::Error;
 use std::fmt;
 use redis::RedisError;
+use config::ConfigError;
 
 pub type LJResult<T> = Result<T, Box<dyn std::error::Error>>;
 
 #[derive(Debug)]
 pub enum LJError {
+    Config(ConfigError),
     RedisConnect(RedisError),
     HeliosDeviceMissing
 }
@@ -15,6 +17,10 @@ impl fmt::Display for LJError {
 	use LJError::*;
 	
 	match self {
+	    Config(err) => {
+		write!(f, "unable to load config file: {err}")
+	    },
+
 	    RedisConnect(err) => {
 		write!(f, "unable to connect to redis server: {err}")
 	    },
diff --git a/src/lib.rs b/src/lib.rs
index 937f09a..b183c49 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,6 @@
-pub mod conf;
 pub mod redis_ctrl;
+pub mod conf;
 pub mod errors;
 pub mod device;
 pub mod point;
+pub mod transformer;
diff --git a/src/main.rs b/src/main.rs
index ea02ccf..e52ef28 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,20 +10,17 @@ mod transformer;
 mod device;
 
 use device::device_factory;
-
-
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
 use redis_ctrl::{RedisCtrl, Order};
 use conf::Conf;
-use errors::{LJError, LJResult};
+use errors::LJResult;
 use point::Point;
-use transformer::{Transformers, Translate, Replicate};
+use transformer::Transformers;
 use log::{LevelFilter, info, /* warn, */ error};
 use env_logger::Builder;
 
 const DEFAULT_CONF_FILE: &str = "settings.toml";
-const CENTER: (f32, f32) = (2000.0, 2000.0);
 
 pub fn main() {
 	match run_all() {
@@ -35,16 +32,18 @@ pub fn main() {
 }
 
 fn run_all() -> LJResult<()> {
-
 	// Setup configuration file and set up logs
 	let filename = std::env::args().nth(1).unwrap_or_else(|| {
 		DEFAULT_CONF_FILE.to_string()
 	});
+
 	let config = Conf::new(&filename);
 	init_logging(&config);
 	let config = config?;
 	info!("*** Starting up ***");
 
+	info!("{:?}", config);
+
 	// Setup Redis Service
 	let mut rs = RedisCtrl::new(&config.redis_url)?;
 
@@ -62,11 +61,7 @@ fn run_all() -> LJResult<()> {
 	//dbg!(tracer);
 
 	// Setup geometry transformers on points lists
-	// @todo use the config
-	let transformers: Vec<Box<dyn Transformers>> = vec![
-		Box::new(Translate::new(CENTER.0, CENTER.1)),
-		Box::new(Replicate::Until(48)),
-	];
+	let transformers = config.get_transformers(); 
 
 	// Dispatch based on redis requests
 	while running.load(Ordering::SeqCst) {
@@ -74,6 +69,7 @@ fn run_all() -> LJResult<()> {
 		if order != Order::Draw {
 			info!("Order: {:?}", order);
 		}
+
 		let frame = get_next_frame(&config, &transformers,
 		                           &mut rs, order == Order::Black)?;
 
@@ -113,6 +109,6 @@ fn get_next_frame(
 		line = transformer.apply(&line);
 	}
 
-	info!("Line: {:?}", line);
+	//info!("Line: {:?}", line);
 	Ok(line)
 }
diff --git a/src/transformer.rs b/src/transformer.rs
index 3728f94..564b981 100644
--- a/src/transformer.rs
+++ b/src/transformer.rs
@@ -1,60 +1,13 @@
+//pub mod common;
+mod translate;
+mod replicate;
+
 use crate::point::Point;
 
+// re-export transformers to be abe to use it directly from transformer::
+pub use translate::Translate;
+pub use replicate::Replicate;
+
 pub trait Transformers {
     fn apply(&self, point_list: &[Point]) -> Vec<Point>;
 }
-
-/// Translate
-
-#[derive(Debug,Clone,Copy)]
-pub struct Translate {
-    x: f32,
-    y: f32
-}
-
-impl Translate {
-    pub fn new(x: f32, y: f32) -> Self {
-	Self { x, y }
-    }
-}
-
-impl Transformers for Translate {
-    fn apply(&self, point_list: &[Point]) -> Vec<Point> {
-	point_list.iter()
-	    .map(| pt | {
-		Point { x: pt.x + self.x,
-			y: pt.y + self.y,
-			..*pt
-		}
-	    }).collect()
-    }
-}
-
-/// Replicate
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub enum Replicate {
-    Until(usize),
-    Times(usize)
-}
-
-impl Transformers for Replicate {
-    fn apply(&self, point_list: &[Point]) -> Vec<Point> {
-	let mut point_list2 = vec![];
-	match self {
-	    Replicate::Until(n) => {
-		while point_list2.len() < *n {
-		    point_list2.append(&mut point_list.to_vec());
-		}
-	    },
-	    Replicate::Times(n) => {
-		for _ in 0..*n {
-		    point_list2.append(&mut point_list.to_vec());		    
-		}
-	    }
-	}
-	point_list2
-    }
-}
-
diff --git a/src/transformer/replicate.rs b/src/transformer/replicate.rs
new file mode 100644
index 0000000..99258ae
--- /dev/null
+++ b/src/transformer/replicate.rs
@@ -0,0 +1,32 @@
+use crate::transformer::Transformers;
+use crate::point::Point;
+use serde::{Serialize,Deserialize};
+
+/// Replicate
+
+#[allow(dead_code)]
+#[derive(Serialize,Deserialize,Debug,Clone,Copy)]
+pub enum Replicate {
+    Until(usize),
+    Times(usize)
+}
+
+impl Transformers for Replicate {
+    fn apply(&self, point_list: &[Point]) -> Vec<Point> {
+	let mut point_list2 = vec![];
+	match self {
+	    Replicate::Until(n) => {
+		while point_list2.len() < *n {
+		    point_list2.append(&mut point_list.to_vec());
+		}
+	    },
+	    Replicate::Times(n) => {
+		for _ in 0..*n {
+		    point_list2.append(&mut point_list.to_vec());		    
+		}
+	    }
+	}
+	point_list2
+    }
+}
+
diff --git a/src/transformer/translate.rs b/src/transformer/translate.rs
new file mode 100644
index 0000000..a36f272
--- /dev/null
+++ b/src/transformer/translate.rs
@@ -0,0 +1,29 @@
+use crate::transformer::Transformers;
+use crate::point::Point;
+use serde::{Serialize,Deserialize};
+
+/// Translate
+
+#[derive(Serialize,Deserialize,Debug,Clone,Copy)]
+pub struct Translate {
+    x: f32,
+    y: f32
+}
+
+impl Translate {
+    pub fn new(x: f32, y: f32) -> Self {
+	Self { x, y }
+    }
+}
+
+impl Transformers for Translate {
+    fn apply(&self, point_list: &[Point]) -> Vec<Point> {
+	point_list.iter()
+	    .map(| pt | {
+		Point { x: pt.x + self.x,
+			y: pt.y + self.y,
+			..*pt
+		}
+	    }).collect()
+    }
+}