diff --git a/src/custom_modules/VoidGPIO.js b/src/custom_modules/VoidGPIO.js
index baa4cdc..b52909c 100644
--- a/src/custom_modules/VoidGPIO.js
+++ b/src/custom_modules/VoidGPIO.js
@@ -2,15 +2,13 @@ const { exec } = require('child_process');
 
 module.exports = {
     // Calls the GPIO Interface script to toggle a pin's state opposite of its current state
-    togglePin(pin, callback) {
-        exec(`python3 src/python/gpio_interface.py toggle ${pin}`, (error, stdout, stderr) => {
-            if (error) {
-                callback(error);
-            }
-            if (stderr) {
-                callback(new Error(stderr));
-            }
-            callback(null);
+    togglePin(pin) {
+        return new Promise((resolve, reject) => {
+            exec(`python3 src/python/gpio_interface.py toggle ${pin}`, (error, stdout, stderr) => {
+                if (error) reject(error);
+                if (stderr) reject(new Error(stderr));
+                resolve();
+            });
         });
     },
     // Calls the GPIO Interface script to read a pin's state
diff --git a/src/custom_modules/functions.js b/src/custom_modules/functions.js
index a272bca..af65c92 100644
--- a/src/custom_modules/functions.js
+++ b/src/custom_modules/functions.js
@@ -47,16 +47,14 @@ module.exports = {
             for (const pin of pins) {
                 switch (pin.mode) {
                     case 'OUT':
-                        gpio.togglePin(pin.board, err => {
-                            if (err) throw err;
+                        gpio.togglePin(pin.board).then(() => {
                             module.exports.log(`Toggled ${pin.key}`);
-                        });
+                        }).catch(e => console.error(e));
                         // Wait 1000ms before toggling again.
                         await module.exports.sleep(1000);
-                        gpio.togglePin(pin.board, err => {
-                            if (err) throw err;
+                        gpio.togglePin(pin.board).then(() => {
                             module.exports.log(`Toggled ${pin.key}`);
-                        });
+                        }).catch(e => console.error(e));
                         break;
                     case 'IN':
                         gpio.readPin(pin.board).then(state => {
diff --git a/src/main.js b/src/main.js
index adb8749..ef12670 100644
--- a/src/main.js
+++ b/src/main.js
@@ -24,7 +24,7 @@ setInterval(() => {
 
 comms.on('stateChange', (change) => {
     console.log(`State change detected: ${change.name}`);
-    gpio.togglePin(config.states[change.name].pin, change.on).then(() => {
+    gpio.togglePin(config.states[change.name].board).then(() => {
         console.log(`Pin ${config.states[change.name].pin} set to ${change.on}`);
-    });
+    }).catch(e => console.error(e));
 });
\ No newline at end of file