diff --git a/heart.png b/heart.png
new file mode 100644
index 0000000..9a39b59
Binary files /dev/null and b/heart.png differ
diff --git a/server.js b/server.js
index b4a5263..5e1af4e 100644
--- a/server.js
+++ b/server.js
@@ -24,7 +24,7 @@ const sensehat = {
     led: {
         ...require('sense-hat-led').sync,
         /*
-            sleep(n) 暂停n秒
+            sleep(n) 暂停 n 秒
             clear()  清除所有
             clear(rgb) or clear([r,g,b])  填充颜色
             setPixel(x,y,r,g,b) or setPixel(x,y,rgb)  设置一个点
@@ -33,40 +33,36 @@ const sensehat = {
             getPixels() -> [[r,g,b]*64]
             flipH(redraw=true)  水平反转
             flipV(redraw=true)  垂直反转
-            setRotation(r, redraw=true)  设置旋转，r初始为0，r只能设置为0/90/180/270
-            getter rotation
-            getter and setter lowLight 默认为true
+            setRotation(r, redraw=true)  设置旋转，r 初始为 0，r 只能设置为 0/90/180/270
+            getter and setter rotation 默认为 0
+            getter and setter lowLight 默认为 true
+            getter and setter gamma = Array of length 32 containing Integers between 0 and 31
+            gammaReset()  恢复默认 gamma
+            loadImage(filePath, redraw=true)
         */
         get pixels() { return sensehat.led.getPixels() },
     },
 }
 
-sensehat.led.clear()
-sensehat.led.setPixels([
-    R, O, O, O, O, O, O, O,
-    O, _, _, _, _, _, _, O,
-    O, _, _, _, _, _, _, O,
-    O, _, _, _, _, _, _, O,
-    O, _, _, _, _, _, _, O,
-    O, _, _, _, _, _, _, O,
-    O, _, _, _, _, _, _, O,
-    O, O, O, O, O, O, O, O,
-])
-sensehat.led.lowLight = true
-sensehat.led.sleep(2)
-sensehat.led.lowLight = false
+// sensehat.led.clear()
+// sensehat.led.setPixels([
+//     R, O, O, O, O, O, O, O,
+//     O, _, _, _, _, _, _, O,
+//     O, _, _, _, _, _, _, O,
+//     O, _, _, _, _, _, _, O,
+//     O, _, _, _, _, _, _, O,
+//     O, _, _, _, _, _, _, O,
+//     O, _, _, _, _, _, _, O,
+//     O, O, O, O, O, O, O, O,
+// ])
+sensehat.led.loadImage('heart.png')
 
 console.log(sensehat.led.rotation)
-console.log(sensehat.led.lowLight)
 
 //         1| RPi Sense HAT API: 8001 | showMessage: [Function: showMessageSync],
 //         1| RPi Sense HAT API: 8001 | flashMessage: [Function: flashMessageSync],
 //         1| RPi Sense HAT API: 8001 | showLetter: [Function: showLetterSync],
 //         1| RPi Sense HAT API: 8001 | loadImage: [Function: loadImageSync],
-//         1| RPi Sense HAT API: 8001 | rotation: [Getter / Setter],
-//         1| RPi Sense HAT API: 8001 | gamma: [Getter / Setter],
-//         1| RPi Sense HAT API: 8001 | gammaReset: [Function: gammaReset],
-//         1| RPi Sense HAT API: 8001 | lowLight: [Getter / Setter]
 // 1 | RPi Sense HAT API: 8001 | }
 
 // socketio 服务