Node.Js, Socket.IO, Physical Interface, Screen Recording

Here is a screen capture of the demo application that I have been, and will be, discussing.  It's a simple example but demonstrates a fair amount of functionality behind the scenes.

• The "ADC Test Session" demonstrates the app reading voltage levels from an ADC via I2c and displaying a graph of both the realtime data and of a high water mark achieved over a second. 
• The "Joystick Test Session" demonstrates the app reading voltages from a joystick via the same ADC as above and detecting a button push via a GPIO.

Some of the things that I will be discussing include the following:

1. Node.Js Async Processing Example
2. Node.Js Web Page Processing (Using 'html' Library)
3. Using Socket.IO to animate a client side graph
4. Integrating a Realtime Clock and an ADC via I2c
5. Integrating a Joystick via I2c with a GPIO detected button

Sample code for my demo application can be found on GitHub.