diff --git a/README.md b/README.md
index 2407ac7..fb0769c 100644
--- a/README.md
+++ b/README.md
@@ -45,9 +45,9 @@ Emits when a LPF2 Hub device is found.
 **Extends**: [<code>Hub</code>](#Hub)  
 
 * [BoostHub](#BoostHub) ⇐ [<code>Hub</code>](#Hub)
-    * [.setLEDColor(color)](#BoostHub+setLEDColor)
-    * [.setMotorSpeed(port, speed, [time])](#BoostHub+setMotorSpeed)
-    * [.setMotorAngle(port, angle, [speed])](#BoostHub+setMotorAngle)
+    * [.setLEDColor(color)](#BoostHub+setLEDColor) ⇒ <code>Promise</code>
+    * [.setMotorSpeed(port, speed, [time])](#BoostHub+setMotorSpeed) ⇒ <code>Promise</code>
+    * [.setMotorAngle(port, angle, [speed])](#BoostHub+setMotorAngle) ⇒ <code>Promise</code>
     * [.connect([callback])](#Hub+connect)
     * [.subscribe(port, [mode])](#Hub+subscribe)
     * [.unsubscribe(port)](#Hub+unsubscribe)
@@ -59,10 +59,11 @@ Emits when a LPF2 Hub device is found.
 
 <a name="BoostHub+setLEDColor"></a>
 
-### boostHub.setLEDColor(color)
+### boostHub.setLEDColor(color) ⇒ <code>Promise</code>
 Set the color of the LED on the Hub via a color value.
 
 **Kind**: instance method of [<code>BoostHub</code>](#BoostHub)  
+**Returns**: <code>Promise</code> - - Resolved upon successful completion of command.  
 
 | Param | Type | Description |
 | --- | --- | --- |
@@ -70,10 +71,11 @@ Set the color of the LED on the Hub via a color value.
 
 <a name="BoostHub+setMotorSpeed"></a>
 
-### boostHub.setMotorSpeed(port, speed, [time])
+### boostHub.setMotorSpeed(port, speed, [time]) ⇒ <code>Promise</code>
 Set the motor speed on a given port.
 
 **Kind**: instance method of [<code>BoostHub</code>](#BoostHub)  
+**Returns**: <code>Promise</code> - - Resolved upon successful completion of command. If time is specified, this is once the motor is finished.  
 
 | Param | Type | Description |
 | --- | --- | --- |
@@ -83,10 +85,11 @@ Set the motor speed on a given port.
 
 <a name="BoostHub+setMotorAngle"></a>
 
-### boostHub.setMotorAngle(port, angle, [speed])
+### boostHub.setMotorAngle(port, angle, [speed]) ⇒ <code>Promise</code>
 Rotate a motor by a given angle.
 
 **Kind**: instance method of [<code>BoostHub</code>](#BoostHub)  
+**Returns**: <code>Promise</code> - - Resolved upon successful completion of command (ie. once the motor is finished).  
 
 | Param | Type | Default | Description |
 | --- | --- | --- | --- |
@@ -196,9 +199,9 @@ Emits when a rotation sensor is activated.
 **Extends**: [<code>Hub</code>](#Hub)  
 
 * [WeDo2Hub](#WeDo2Hub) ⇐ [<code>Hub</code>](#Hub)
-    * [.setLEDColor(color)](#WeDo2Hub+setLEDColor)
-    * [.setLEDRGB(red, green, blue)](#WeDo2Hub+setLEDRGB)
-    * [.setMotorSpeed(port, speed)](#WeDo2Hub+setMotorSpeed)
+    * [.setLEDColor(color)](#WeDo2Hub+setLEDColor) ⇒ <code>Promise</code>
+    * [.setLEDRGB(red, green, blue)](#WeDo2Hub+setLEDRGB) ⇒ <code>Promise</code>
+    * [.setMotorSpeed(port, speed)](#WeDo2Hub+setMotorSpeed) ⇒ <code>Promise</code>
     * [.connect([callback])](#Hub+connect)
     * [.subscribe(port, [mode])](#Hub+subscribe)
     * [.unsubscribe(port)](#Hub+unsubscribe)
@@ -210,10 +213,11 @@ Emits when a rotation sensor is activated.
 
 <a name="WeDo2Hub+setLEDColor"></a>
 
-### weDo2Hub.setLEDColor(color)
+### weDo2Hub.setLEDColor(color) ⇒ <code>Promise</code>
 Set the color of the LED on the Hub via a color value.
 
 **Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)  
+**Returns**: <code>Promise</code> - - Resolved upon successful completion of command.  
 
 | Param | Type | Description |
 | --- | --- | --- |
@@ -221,10 +225,11 @@ Set the color of the LED on the Hub via a color value.
 
 <a name="WeDo2Hub+setLEDRGB"></a>
 
-### weDo2Hub.setLEDRGB(red, green, blue)
+### weDo2Hub.setLEDRGB(red, green, blue) ⇒ <code>Promise</code>
 Set the color of the LED on the Hub via RGB values.
 
 **Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)  
+**Returns**: <code>Promise</code> - - Resolved upon successful completion of command.  
 
 | Param | Type |
 | --- | --- |
@@ -234,10 +239,11 @@ Set the color of the LED on the Hub via RGB values.
 
 <a name="WeDo2Hub+setMotorSpeed"></a>
 
-### weDo2Hub.setMotorSpeed(port, speed)
+### weDo2Hub.setMotorSpeed(port, speed) ⇒ <code>Promise</code>
 Set the motor speed on a given port.
 
 **Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)  
+**Returns**: <code>Promise</code> - - Resolved upon successful completion of command.  
 
 | Param | Type | Description |
 | --- | --- | --- |
diff --git a/boosthub.ts b/boosthub.ts
index 4fdebc7..cebf104 100644
--- a/boosthub.ts
+++ b/boosthub.ts
@@ -58,6 +58,7 @@ export class BoostHub extends Hub {
      * Set the color of the LED on the Hub via a color value.
      * @method BoostHub#setLEDColor
      * @param {number} color - A number representing one of the LED color consts.
+     * @returns {Promise} - Resolved upon successful completion of command.
      */
     public setLEDColor (color: number | boolean) {
         return new Promise((resolve, reject) => {
@@ -93,6 +94,7 @@ export class BoostHub extends Hub {
      * @param {string} port
      * @param {number} speed - For forward, a value between 1 - 100 should be set. For reverse, a value between -1 to -100. Stop is 0.
      * @param {number} [time] - How long to activate the motor for (in milliseconds). Leave empty to turn the motor on indefinitely.
+     * @returns {Promise} - Resolved upon successful completion of command. If time is specified, this is once the motor is finished.
      */
     public setMotorSpeed (port: string, speed: number, time: number) {
         return new Promise((resolve, reject) => {
@@ -123,6 +125,7 @@ export class BoostHub extends Hub {
      * @param {string} port
      * @param {number} angle - How much the motor should be rotated (in degrees).
      * @param {number} [speed=100] - How fast the motor should be rotated.
+     * @returns {Promise} - Resolved upon successful completion of command (ie. once the motor is finished).
      */
     public setMotorAngle (port: string, angle: number, speed: number = 100) {
         return new Promise((resolve, reject) => {
diff --git a/wedo2hub.ts b/wedo2hub.ts
index 27f59a5..e3ec470 100644
--- a/wedo2hub.ts
+++ b/wedo2hub.ts
@@ -54,6 +54,7 @@ export class WeDo2Hub extends Hub {
      * Set the color of the LED on the Hub via a color value.
      * @method WeDo2Hub#setLEDColor
      * @param {number} color - A number representing one of the LED color consts.
+     * @returns {Promise} - Resolved upon successful completion of command.
      */
     public setLEDColor (color: number | boolean) {
         return new Promise((resolve, reject) => {
@@ -79,6 +80,7 @@ export class WeDo2Hub extends Hub {
      * @param {number} red
      * @param {number} green
      * @param {number} blue
+     * @returns {Promise} - Resolved upon successful completion of command.
      */
     public setLEDRGB (red: number, green: number, blue: number) {
         return new Promise((resolve, reject) => {
@@ -100,6 +102,7 @@ export class WeDo2Hub extends Hub {
      * @method WeDo2Hub#setMotorSpeed
      * @param {string} port
      * @param {number} speed - For forward, a value between 1 - 100 should be set. For reverse, a value between -1 to -100. Stop is 0.
+     * @returns {Promise} - Resolved upon successful completion of command.
      */
     public setMotorSpeed (port: string, speed: number) {
         return new Promise((resolve, reject) => {