#node-myo

This is a prototype app that controls the Parrot Rolling Spider with MyoJS and PebbleJS

##Acknowledgments Without the open source projects and guidance from Chris Willians and Sandeep Mistry, this project would not have lifted from the ground (literally).

##Quick run down This Nodejs app:

• Creates a server and listens for AJAX calls from Pebble.
• Detects keypresses in terminal and controls the drone.
• Connects to Myo and allow dron control.
• Uses socket.io by the client UI to interact with the drone.

##Instructions

###Prerequisites

• Pebble
• Myo
• Bluetooth 4.0 enabled device
• Rolling Spider drone

###Running the PebbleJS app

Build pebbleapp/pebblejs.jsas an app in cloudpebble.net and push to your mobile

###Running the Node app

cd app && npm install

Running the app

npm start

Running the app without tunnel proxy (disabled PebbleJS)

npm run dev

Note: Make sure bluetooth is turned on and Myo USB receiver is connected

Drone discovery

To discover the ID and name of a certain drone, use app/lib/discovery.js

##GUI

A node express server is run, served with Jade templates. Open the following URL in your web browser

http://localhost:1337

The web page serves three purposes:

• Provide a Myo gestures representation, using a drone image.
• Provide the IMU data output by Myo (Gyrocope, Accelerometer and Orientation). Outputs the reading every 250ms.
• Provide calculated Pitch and Roll data
• Output selected commands/operations being called behind the scene e.g. SocketIO is connected, etc.

Note: This is still a work in progress. A lot of keypresses are not ported over to the GUI. For the time being, it only displays the following detected gestures from Myo: tilt left, tilt right, takeoff and land

##Controls

###Keys

Keys	Function
Escape button	Exit app
q	Exit app
Ctrl + C	Exit app
Space	Drone take off
a	Calibrate Myo starting point
x	Toggle lock. This toggles the drone to listen to Myo movements
z	Drone land
m	Emergency landing
h	Hover
b	Flips 360 back
h	Hover mode
t	Force takeoff
up arrow	Forward
down arrow	Backward
left arrow	Turn left
right arrow	Turn right

###Myo Gestures

Gestures	Function
Fist	Lock
Fingers spread	Unlock
Hand up	Drone flies up
Hand down	Drone flies down
Hand tilt left	Drone tilts left
Hand tilt right	Drone tilts right

###Pebble

Menu	Function
Ping	Test if it is able to reach the app service
Take off	Drone takes off
Land	Drone lands
Hover	Hover mode
Emergency	Emergency landing
Front flip	Flips 360 front
Back flip	Flips 360 back
Left flip	Flips 360 left
Right flip	Flips 360 right

##Known issues

• There is a small delay in time between nodejs calls and the drone responding to it.
• Unresponsive drone once it lands or crashed. The current fix is to reset the drone and restart the app