Is there a way to view code output on a computer? What I’m looking for is a way to upload code to a Teensy then display on my computer in some kind of virtual environment what the LEDs would look like if they were actually connected.
That’s a good question.
Following for answers.
A few people have discussed “simulators” and “emulators” here before. Try searching the group for those terms, and post back here any links that you find useful!
http://www.vixenlights.com/
I am about to test software and have no idea how it works yet , and it the only windows and arduino program out there that I could find apart from expensive dmx controllers etc… 
You mean from the Teensy to the computer? You can easily do it with almost any visual programming languaje like C#. Also you can write the code and simulate it too
Would be nice, and probably not too difficult to do. But you have to emulate two things, the Teensy, and the NeoPixels. The NeoPixels would be rough I think. Maybe not?
I’d be interested in a NeoPixel emulator in and of itself. Create a strand or set emulated and hook those up to FastLED compiled in some sort of ARM Bochs/Qemu machine or something? Pry a lot more work than just debugging the Teensy, but interesting anyway.
@Kevin_Wagner Here’s something I was messing with to have a visual without having a strip hooked up.
https://plus.google.com/+MarcMillerTime/posts/EqtaXt8DPGw
@marmil Excellent! Thank you Marc, this is exactly what I was looking for.