--- a/rust/src/fridge.rs	Sat Dec 24 00:14:58 2016 +0800
+++ b/rust/src/fridge.rs	Tue Dec 27 00:51:28 2016 +0800
@@ -1,16 +1,65 @@
+use std::io;
+use std::time::Duration;
+
+use futures::Future;
+use tokio_core::reactor::Timeout;
+use tokio_core::reactor::Handle;
+
 use types::*;
 
-pub struct Fridge<'a> {
-    params: &'a Params,
+pub struct Fridge {
+    params: Params,
+    temp_wort: Option<f32>,
+    temp_fridge: Option<f32>,
+
+    // timeouts to wake ourself up again
+    //overshoot_timeout: Option<Future<Item=(), Error=io::Error>>,
+    //fridgeoff_timeout: Option<Future<Item=(), Error=io::Error>>,
+    wortvalid_timeout: Option<Timeout>,
 }
 
-impl<'a> Fridge<'a> {
-    pub fn new(p: &'a Params) -> Fridge<'a> {
-        Fridge { params: p }
+impl Fridge {
+    pub fn new(p: Params) -> Fridge {
+        Fridge { 
+            params: p,
+            temp_wort: None,
+            temp_fridge: None,
+            //overshoot_timeout: None,
+            //fridgeoff_timeout: None,
+            wortvalid_timeout: None,
+        }
+    }
+
+    fn tick(&mut self, handle: &Handle) {
+
     }
 
-    pub fn set_params(&mut self, p: &'a Params) {
+    pub fn set_params(&mut self, handle: &Handle, p: Params) {
         self.params = p;
+        println!("params {:?}", self.params);
+
+        self.tick(handle);
+    }
+
+    pub fn set_temps(&mut self, handle: &Handle, 
+                wort: Option<f32>, fridge: Option<f32>) {
+        self.temp_wort = wort;
+        self.temp_fridge = fridge;
+
+        if let Some(_) = self.temp_wort {
+            // set a new timeout, replacing any existing
+            let dur = Duration::new(10, 0); // XXX
+            let t = Timeout::new(dur, handle).unwrap();
+            /*
+            handle.spawn(t.and_then(|_| {
+                                self.tick(handle);
+                                Ok(())
+                            }).map_err(|x| ()));
+                            */
+            self.wortvalid_timeout = Some(t);
+        }
+
+        self.tick(handle);
     }
 
 }