update

public/index.html

@@ -129,25 +129,20 @@
         </div>
     </div>
 
-    <button class="button" data-action="clear">clear all</button>
+    <button onclick="emit('clear')">clear all</button>
     <br>
-    <button class="button" data-action="hello">hello</button>
+    <button onclick="emit('hello')">hello</button>
     <br>
-    <button class="button" data-action="flash">flash</button>
+    <button onclick="emit('flash')">flash</button>
     <br>
-    <button class="button" data-action="temp">temp</button>
+    <button onclick="emit('temp')">temp</button>
 
     <script src="socket.io/socket.io.js"></script>
     <script>
         const client = io()
-        document.addEventListener('click', (event) => {
+        function emit(action) {
-            const item = event.target
+            client.emit('action', { action })
-            if (item.classList.contains('button')) {
+        }
-                const { action } = item.dataset
-                document.querySelectorAll('.led').forEach((led) => led.classList.remove('on'))
-                client.emit('action', { action })
-            }
-        })
         function turnon(led) {
             const { x, y } = led.dataset
             const action = led.classList.toggle('on') ? 'on' : 'off'

sensehat.js

@@ -8,7 +8,7 @@ app.use(express.static('public'))
 sense.setRotation(180)
 sense.lowLight = true
 
-const blue = [50, 50, 200]
+const blue = [0, 0, 100]
 flash()
 io.on('connection', (client) => {
     client.on('action', ({ action, x, y }) => {