close #11 and fix bugs on timers

Took 1 hour 14 minutes

package.json

@@ -25,6 +25,7 @@
     "@types/rpi-gpio": "^2.1.1",
     "@types/rpi-ws281x-native": "^1.0.0",
     "@types/serialport": "^8.0.2",
+    "@types/sharp": "^0.31.1",
     "axios": "^1.2.0",
     "buffer": "^6.0.3",
     "cookie-parser": "^1.4.6",
@@ -42,7 +43,8 @@
     "pug": "^3.0.2",
     "rpi-gpio": "^2.1.7",
     "rpi-ws281x-native": "^1.0.4",
-    "serialport": "^10.5.0"
+    "serialport": "^10.5.0",
+    "sharp": "^0.31.3"
   },
   "devDependencies": {
     "nodemon": "^2.0.20",