diff --git a/index.js b/index.js
index 405ec86..82695a4 100644
--- a/index.js
+++ b/index.js
@@ -1,6 +1,9 @@
 import * as server from './server.js';
 import * as lights from './lights.js';
 
+const cfg = require('./config.json');
+
+global.cfg = cfg || {};
 
 server.recv(
   (res) => {
diff --git a/lights.js b/lights.js
index d5a331e..f6f891d 100644
--- a/lights.js
+++ b/lights.js
@@ -1,18 +1,21 @@
 import * as ws281x from 'rpi-ws281x'
 
-const cfg = require('./config.json');
+if (!global.cfg) {
+  const cfg = require('./config.json');
 
-const fade_ticks = cfg.fade_ticks || 10;
-var pixels = new Uint32Array(cfg.leds);
-var pixel_cache = new Uint32Array(cfg.leds);
-var next_pattern = new Uint32Array(cfg.leds);
+  global.cfg = cfg || {};
+}
+const fade_ticks = global.cfg.fade_ticks || 10;
+var pixels = new Uint32Array(global.cfg.leds);
+var pixel_cache = new Uint32Array(global.cfg.leds);
+var next_pattern = new Uint32Array(global.cfg.leds);
 var pattern = {}
 
 ws281x.configure({
-  leds: cfg.leds || 300,
-  brightness: cfg.brightness || 200,
-  gpio: cfg.gpio || 18,
-  stripType: cfg.type || 'grb'
+  leds: global.cfg.leds || 300,
+  brightness: global.cfg.brightness || 200,
+  gpio: global.cfg.gpio || 18,
+  stripType: global.cfg.type || 'grb'
 });
 
 export function set_pattern(pat) {
@@ -25,7 +28,7 @@ function tick_pattern() {
   var g = Math.floor(Math.random() * 100);
   var b = Math.floor(Math.random() * 100);
 
-  for (let i = 0; i < cfg.leds; i++) {
+  for (let i = 0; i < global.cfg.leds; i++) {
     if (i % 3 == 0) {
       next_pattern[i] = r;
       next_pattern[i + 1] = g;
@@ -36,7 +39,7 @@ function tick_pattern() {
 
 export function tick() {
   var changed = false;
-  for (let i = 0; i < cfg.leds; i++) {
+  for (let i = 0; i < global.cfg.leds; i++) {
     if (next_pattern[i] != pixels[i]) {
       changed = true;
       fade(i);