###Getting started###

* [Spectrometry Overview](/tool/spectrometer)
* [Details](/wiki/video-spectrometer)
* [Software](/wiki/spectral-workbench)
* [Usage](/wiki/spectral-workbench-usage)
* [Calibration](/wiki/spectral-workbench-calibration)
* [Construction](/wiki/video-spectrometer-construction)

###FAQ###

**What's "wavenumber" vs "wavelength"?**

Wavenumber is the inverse of wavelength, and some scientists prefer it (depending on what their background is). It means the # of waves per distance -- I believe we're using lines per centimeter. Wikipedia has a kind of esoteric but detailed explanation: http://en.wikipedia.org/wiki/wavenumber 

###Troubleshooting###

If you have trouble, you can post questions to the mailing list by [signing up on this site](/user/register), which will subscribe you. You can also post requests for help to Github at: https://github.com/jywarren/spectral-workbench/issues/new

Look over the issues listed here, and see if your problem already exists, or is already answered:

###[Spectral Workbench Issue Tracker](https://github.com/jywarren/spectral-workbench/issues?labels=client&sort=created&direction=desc&state=open&page=1)###

###Known issues###

**Linux app wont boot** - this may be due to the absence of the GSVideo library. Copy the folder called "libraries" from your /spectral_workbench/ directory into your Processing "sketchbook". It should contain the GSVideo library and the ControlP5 library. Now restart Processing or reopen the app. 

##Please consider these questions in your request:##

* Did you launch the platform-specific version in the Mac OS X or Windows folders, or run it from within Processing (http://processing.org)?
  * If you're having trouble, please try the Processing version, as it generates more useful error output.
* If you run it in Processing (processing.org) can you copy and paste the debug output from the Processing window and post/send it? That's much easier to diagnose.
* Do you have a webcam and does it work normally in Photo Booth (mac), Cheese (linux), VLC (windows and linux) or whatever webcam app Windows has?
  * Did you close other webcam-using applications and free up your webcam before launching Spectral Workbench?

###Windows###

* Do you have QuickTime installed? http://www.apple.com/quicktime/

Follow [these instructions](https://github.com/jywarren/spectral-workbench/issues/56) for full installation on Windows XP and Windows 7. (If you have time to tidy these instructions up and copy them into this wiki, even better!)

###Mac OS X###

* What version of Mac OS X are you using? 
* If you see a grey screen, does a your webcam light up for a moment? There is a bug where a popup window asks you to choose a camera, but it can't come to the front because the app is fullscreen. You might try apple-tab once you see the green light come on.