diff --git a/src/custom_modules/VoidGPIO.js b/src/custom_modules/VoidGPIO.js
index 5c50031..baa4cdc 100644
--- a/src/custom_modules/VoidGPIO.js
+++ b/src/custom_modules/VoidGPIO.js
@@ -14,11 +14,13 @@ module.exports = {
         });
     },
     // Calls the GPIO Interface script to read a pin's state
-    readPin(pin, callback) {
-        exec(`python3 src/python/gpio_interface.py read ${pin}`, (error, stdout, stderr) => {
-            if (error) callback(error);
-            if (stderr) callback(new Error(stderr));
-            callback(null, stdout.trim());
+    readPin(pin) {
+        return new Promise((resolve, reject) => {
+            exec(`python3 src/python/gpio_interface.py read ${pin}`, (error, stdout, stderr) => {
+                if (error) reject(error);
+                if (stderr) reject(new Error(stderr));
+                resolve(stdout.trim());
+            });
         });
     },
     // Calls the GPIO Interface script to set a pin's state regardless of its current state
diff --git a/src/custom_modules/functions.js b/src/custom_modules/functions.js
index 09f9a8b..908287b 100644
--- a/src/custom_modules/functions.js
+++ b/src/custom_modules/functions.js
@@ -1,5 +1,6 @@
 const dotenv = require('dotenv').config();
 const debug = process.env.DEBUG === "TRUE";
+const config = require('./config.json');
 const { pins } = require('./config.json');
 const gpio = require('./VoidGPIO.js');
 const pinMap = new Map();
@@ -71,25 +72,29 @@ module.exports = {
     power: {
         start: {
             init() {
-                return new Promise((resolve, reject) => {
-                    // Check pin states
+                return new Promise(async (resolve, reject) => {
+                    // TODO: Check pin states?
 
-                    // Set pins to default states
+                    // T_DONE: Set pins to default states
                     module.exports.gpio.setDefaults().then(changes => {
                         module.exports.log(changes);
                     }).catch(e => console.error(e));
-                    // Power on igniter
-                    gpio.setPin(pinMap.igniter.board, 1, (err) => {
-                        if (err) reject(err);
-                    })
-                    // Wait for igniter preheat
-                     
-                    // Start exhaust
 
-                    // Finish igniter preheat
+                    // T_DONE: Power on igniter
+                    gpio.setPin(pinMap.igniter.board, 1).then(async () => {
+                        // T_DONE: Wait for igniter preheat
+                        await module.exports.sleep(config.power.start.exhaustDelay);
+                    }).catch(e => console.error(e));
+
+                    // T_DONE: Start exhaust
+                    gpio.setPin(pinMap.exhaust.board, 1).then(async () => {
+                        // T_DONE: Finish igniter preheat
+                        await module.exports.sleep(config.power.start.augerDelay);
+                    }).catch(e => console.error(e));
 
                     // Check for vacuum
                     
+
                     // Start auger
 
                     // Wait for fire