diff --git a/sensehat/index.html b/sensehat/index.html
index f96f06b..3f9c58f 100644
--- a/sensehat/index.html
+++ b/sensehat/index.html
@@ -129,24 +129,23 @@
         </div>
     </div>
 
-    <button onclick="client.emit('action', {action:'clear'})">clear all</button>
+    <button onclick="client.emit('operation', {action:'clear'})">clear</button>
     <br>
-    <button onclick="client.emit('action', {action:'hello'})">hello</button>
+    <button onclick="client.emit('operation', {action:'hello'})">hello</button>
     <br>
-    <button onclick="client.emit('action', {action:'flash'})">flash</button>
+    <button onclick="client.emit('operation', {action:'flash'})">flash</button>
     <br>
-    <button onclick="client.emit('action', {action:'temp'})">temp</button>
+    <button onclick="client.emit('operation', {action:'temp'})">temp</button>
     <div id="rpis"></div>
 
     <script src="http://pi/sensehat/socket.io/socket.io.js"></script>
     <script>
         const client = io.connect('ws://pi', { path: '/sensehat/socket.io', })
-        client.on("message", (message) => console.log(message))
-        // function turnon(led) {
-        //     const { x, y } = led.dataset
-        //     const action = led.classList.toggle('on') ? 'on' : 'off'
-        //     client.emit('action', { action, x, y })
-        // }
+        function turnon(led) {
+            const { x, y } = led.dataset
+            const action = led.classList.toggle('on') ? 'on' : 'off'
+            client.emit('operation', { action, x, y })
+        }
         // client.on('leds', (array) => {
         //     const leds = document.querySelectorAll('.led')
         //     for (let y = 0; y < 8; y++) {