diff --git a/ac.js b/ac.js
index 4ede551..87b150d 100644
--- a/ac.js
+++ b/ac.js
@@ -11,6 +11,15 @@ var INT8_MAX =	 127;
 var UINT8_MAX =	 255;
 var UINT8_MAX2 = 0xFF;
 
+const AcMode = Object.freeze({"Heat":1, "Dry":2, "Cool":3, "Fan":7, "Auto":8})
+
+// var AcMode {
+//   Heat = 1,
+//   Dry =  2,
+//   Cool = 3,
+//   FanHi =  7,
+//   Auto = 8
+// }
 
 // Constants
 var AcTimes =
@@ -26,13 +35,7 @@ var AcTimes =
 // var AcTolerance = 5;  // Extra Percentage for the rest.
 };
 
-const enum AcMode {
-  Heat = 1,
-  Dry =  2,
-  Cool = 3,
-  FanHi =  7,
-  Auto = 8
-};
+
 
 var AcModeSize = 4;  // Nr. of Bits
 
@@ -82,7 +85,7 @@ var b = setBits(state[0],0,5,0x0);
 console.log("" + state.toString('hex'));
 setTemp(24);
 // console.log("" + state.toString('hex'));
-setMode(AcHeat);
+setMode(AcMode.Heat);
 // console.log("" + state.toString('hex'));
 setPower(true);
 // console.log("" + state.toString('hex'));
@@ -92,20 +95,20 @@ var rawTime = "38000,"+GenerateTimingString();
 console.log(rawTime);
 
 
-const request = require('request');
-request.post(
-  'http://192.168.1.126/ir',
-  { form: { code: rawTime,  type: 30} },
-  function (error, response, body) {
-      if (!error && response.statusCode == 200) {
-          console.log("GOT " + body);
-          //var m = model;
-          //res.render('accontrol', {model:{data:req.body, user:req.user, command:com[0], info:com[0].info}});
-      }else{
-        model.info = "Error executing command " + model.command.info + ". Server resturned:" + req.statusCode
-      }
-  }
-);
+// const request = require('request');
+// request.post(
+//   'http://192.168.1.126/ir',
+//   { form: { code: rawTime,  type: 30} },
+//   function (error, response, body) {
+//       if (!error && response.statusCode == 200) {
+//           console.log("GOT " + body);
+//           //var m = model;
+//           //res.render('accontrol', {model:{data:req.body, user:req.user, command:com[0], info:com[0].info}});
+//       }else{
+//         model.info = "Error executing command " + model.command.info + ". Server resturned:" + req.statusCode
+//       }
+//   }
+// );
 
 function GenerateTimingString()
 {
@@ -186,17 +189,16 @@ function setPower( on) {
 function setMode(mode) {
   // If we get an unexpected mode, default to AUTO.
   switch (mode) {
-    case AcFanHi:
+    case AcMode.Fan:
       setFan(AcFanHigh);break;
-      // FALLTHRU
-    case AcAuto:
-    case AcCool:
-    case AcHeat:
-    case AcDry:
+    case AcMode.Auto:
+    case AcMode.Cool:
+    case AcMode.Heat:
+    case AcMode.Dry:
         state[6] = setBits(state[6], kLowNibble, AcModeSize, mode);
       break;
     default:
-      setMode(AcAuto);
+      setMode(AcMode.Auto);
   }
 }
 
diff --git a/dht.js b/dht.js
index acdaa5c..fbc78df 100644
--- a/dht.js
+++ b/dht.js
@@ -90,10 +90,11 @@ passport.deserializeUser(function(id, cb) {
 var fs = require("fs");
 var http = require('http');
 var https = require('https');
-var privateKey  = fs.readFileSync('/etc/letsencrypt/live/iot.d-popov.com/privkey.pem', 'utf8');
-var certificate = fs.readFileSync('/etc/letsencrypt/live/iot.d-popov.com/cert.pem', 'utf8');
-var credentials = {key: privateKey, cert: certificate};
-
+try{
+var _privateKey  = fs.readFileSync('/etc/letsencrypt/live/iot.d-popov.com/privkey.pem', 'utf8');
+var _certificate = fs.readFileSync('/etc/letsencrypt/live/iot.d-popov.com/cert.pem', 'utf8');
+var credentials = {key: _privateKey, cert: _certificate};
+}catch(ex){console.log("can't load certificates.");}
 
 
 //!database
@@ -145,6 +146,9 @@ app.use(require('express-ejs-layouts'));//https://www.npmjs.com/package/express-
 
 // defining endpoints
 
+app.get('/', function(req, res){
+  res.redirect('/n/login');
+});
 //Authentication ++
 app.get('/login', function(req, res) {
   res.render('login', { user: req.user });
@@ -161,61 +165,80 @@ app.post('/login',
     res.redirect(req.session);
   }
   );
-
 app.get('/logout', function(req, res){
     req.logout();
     res.redirect('/n/login');
 });
 
 app.get('/accontrol', ensureLoggedIn, function(req, res){
-    console.log("viewing /accontrol as authenticated user:"+ req.user);
-    res.render('accontrol', { model: { user: req.user, data:{} }});
-  });
+  res.render('accontrol',{model:{data:req.body, user:req.user, command:"", info:""}});
+});
 
-  app.post('/accontrol', ensureLoggedIn, function(req, res){
-    var model = { model: {user: req.user, data: req.body} };
-    console.log("power:"+ req.body.power);
-    console.log("heat:"+ req.body.heat);
-    console.log("temp:"+ req.body.temp);
-    console.log("econo:"+ req.body.econo);
-    var where = {ac_power: req.body.power?true:false};
-    if(where.ac_power){
-      where.ac_mode = req.body.heat?"Heat":"Cool";
-      if(req.body.temp){ where.ac_temp = req.body.temp; }else{where.ac_temp = 23}
-
-      //where.ac_econo = req.body.econo?true:false;
-      //// if(req.body.turbo){ where.ac_turbo = req.body.turbo?true:false; }
-      //// if(req.body.swing){ where.ac_swing = req.body.swing?true:false; }
-      //// if(req.body.display){ where.ac_display = req.body.display?true:false; }
-      //// if(req.body.health){ where.ac_health = req.body.health?true:false; }
+var ac = require('./ac.js');
+app.post('/accontrol', ensureLoggedIn, function(req, res){
+  var model = { model: {user: req.user, data: req.body} };
+  console.log("power:"+ req.body.power);
+  console.log("heat:"+ req.body.heat);
+  console.log("temp:"+ req.body.temp);
+  console.log("econo:"+ req.body.econo);
+  ac.Tlc112.Init();
+  ac.Tlc112.SetPower(req.body.power);
+  ac.Tlc112.SetMode(req.body.heat? ac.Mode.Heat:ac.Mode.Cool);
+  ac.Tlc112.SetTemp( req.body.temp);
+  var code = ac.Tlc112.GetCommand();
+  request.post(
+    'http://192.168.1.126/ir',
+    { form: { code: code,  type: 30} },
+    function (error, response, body) {
+        if (!error && response.statusCode == 200) {
+            console.log("GOT " + body);
+            //var m = model;
+            //res.render('accontrol', {model:{data:req.body, user:req.user, command:com[0], info:com[0].info}});
+        }else{
+          model.info = "Error executing command " + model.command.info + ". Server resturned:" + req.statusCode
+        }
     }
-    data.DeviceCommand.findAll({ where: where }).then(function(com){
-      console.log("FOUND "+ com.length + " RESULTS");
-      if(com.length > 0)
-      {
-        model.command = com[0];
-        model.info = model.command.info;
-        console.log("executing command "+ model.info+ "");
-        request.post(
-          'http://192.168.1.126/ir',
-          { form: { cmd: "RAW:" + model.command.command } },
-          function (error, response, body) {
-              if (!error && response.statusCode == 200) {
-                  //console.log("GOT " + body);
-                  var m = model;
-                  res.render('accontrol', {model:{data:req.body, user:req.user, command:com[0], info:com[0].info}});
-              }else{
-                model.info = "Error executing command " + model.command.info + ". Server resturned:" + req.statusCode
-              }
-          }
-        );
-      } else 
-      {
-        model.info = "Command not executed. Found " + com.length + "commands"
-        res.render('accontrol', model);
-      }
-    });
-  });
+  );
+ 
+  // var where = {ac_power: req.body.power?true:false};
+  // if(where.ac_power){
+  //   where.ac_mode = req.body.heat?"Heat":"Cool";
+  //   if(req.body.temp){ where.ac_temp = req.body.temp; }else{where.ac_temp = 23}
+
+  //   //where.ac_econo = req.body.econo?true:false;
+  //   //// if(req.body.turbo){ where.ac_turbo = req.body.turbo?true:false; }
+  //   //// if(req.body.swing){ where.ac_swing = req.body.swing?true:false; }
+  //   //// if(req.body.display){ where.ac_display = req.body.display?true:false; }
+  //   //// if(req.body.health){ where.ac_health = req.body.health?true:false; }
+  // }
+  // data.DeviceCommand.findAll({ where: where }).then(function(com){
+  //   console.log("FOUND "+ com.length + " RESULTS");
+  //   if(com.length > 0)
+  //   {
+  //     model.command = com[0];
+  //     model.info = model.command.info;
+  //     console.log("executing command "+ model.info+ "");
+  //     request.post(
+  //       'http://192.168.1.126/ir',
+  //       { form: { cmd: "RAW:" + model.command.command } },
+  //       function (error, response, body) {
+  //           if (!error && response.statusCode == 200) {
+  //               //console.log("GOT " + body);
+  //               var m = model;
+  //               res.render('accontrol', {model:{data:req.body, user:req.user, command:com[0], info:com[0].info}});
+  //           }else{
+  //             model.info = "Error executing command " + model.command.info + ". Server resturned:" + req.statusCode
+  //           }
+  //       }
+  //     );
+  //   } else 
+  //   {
+  //     model.info = "Command not executed. Found " + com.length + "commands"
+  //     res.render('accontrol', model);
+  //   }
+  //});
+});
+
 
   app.get('/chart', ensureLoggedIn,
   function(req, res){
@@ -225,16 +248,7 @@ app.get('/accontrol', ensureLoggedIn, function(req, res){
 
 
 //Authentication --
-
-
-
-
-
-
-
-
-
-
+const { parse } = require('querystring');
 app.post('/dht/ping', (req, res) => {  (async (res) => {
   try {
     console.log("HEADERS:" + req.headers);      res.sendStatus(200);
@@ -243,32 +257,48 @@ app.post('/dht/ping', (req, res) => {  (async (res) => {
   }  })(res);
 });
 
+var moment = require('moment');
+
 app.use('/ir', bodyParser.text(), function(rq, rs) {
+  
+  console.log("");
+  console.log("");
+  console.log("");
+  console.log("");
+  console.log("IR request:"+rq.method );
   if(rq.method == "GET")
   {
-    //var t = moment.duration(parseInt(req.param('uptime')), 'milliseconds');
-    var _message = req.param('ip');
-    console.log("watchdog from " + _message);
-    res.send("You are alive!");
-  }else{  
-    console.log("REQ:"+rq.headers); 
-    console.log("BODY:"+rq.body);
-    rs.sendStatus(200);
+    var cmd = rq.param('command');
+    console.log("GET CMD:"+cmd );
+    switch(cmd)
+    {
+      case 'ping':
+        var t = moment.duration(parseInt(rq.param('uptime')), 'milliseconds');
+        var _message = rq.param('ip') + " uptime " + t.hours() + "h " + t.minutes() + "m " + t.seconds() +"s";
+        // var t = moment.duration(parseInt(rq.params.uptime), 'milliseconds');
+        // var _message = rq.params.ip + " uptime " + t.hours() + "h " + t.minutes() + "m " + t.seconds() +"s";
+        console.log("ping from " + _message);
+        rs.send("pong=ok");
+        rs.end('End\n');
+        console.log("response ended");
+        break; 
+      case 'on':
+        default:rs.send("OK");
+    }
+  }else {
+    let body = '';
+    rq.on('data', chunk => {
+        body += chunk.toString(); 
+    });
+    rq.on('end', () => {
+        console.log(">"+body);
+        var ob =  parse(body);
+        console.log(ob);
+        rs.end('ok');
+    });
   }
 });
 
-// app.post('/ir', (req, res) => {
-//   (async (res) => {
-//     try {
-//       //console.log(req.params);
-//       console.log("REQ:"+req.body);
-//       console.log(`post/${util.inspect(req.body,false,null)}`);
-//       res.sendStatus(200);
-//     } catch (error) {
-//       console.log("IR  Error:" + error); //..response.body);
-//     }
-//   })(res);
-// });
 
 app.get('/dht', (req, res) => {  (async (res) => {
   try {
@@ -330,11 +360,13 @@ app.get('/ac', (req, res) => {  (async (res) => {
 //Startup
 
 var httpServer = http.createServer(app);
+if(credentials){
 var httpsServer = https.createServer(credentials, app);
-
 httpsServer.listen(8443, () => {
   console.log('HTTPS server listening on port 8443');
 });
+}
+
 httpServer.listen(81, () => {
   console.log('HTTP server listening on port 81');
 });