Open Laser Show DAC
The Open Laser Show DAC is an Open Source Hardware/Software project.
It implements a Laser Show DAC (Digital to Analog Converter) that uses the ILDA standard laser projector connector. The one exception that it uses singled ended color signals.
If you would like a history of this project and how it got to this point please go to the DAC History Page. The history page details the origin of the idea and its progression over the years.
This board is built as an Arduino Shield. It requires a Arduino 2009 (Duemilanove) or compatible Arduino micro-controller board.
Bare PCB Boards can be ordered from OSHPark.com
I have uploaded and shared V3 and V4 for easy ordering: https://oshpark.com/profiles/cfavreau
Compatible Software List:
- Laser Show eXpress (LSX) - and maybe some other DrLava Software
- Spaghetti
- Mamba Black
- Anything else that supports the OLSC API or MLD API
- Arduino IDE
Currently there are 2 versions of the board supported:
Rev4
OLSD V4 Arduino Shield Prototype
Click HERE to visit the Rev4 Page.
Specifications:
- Scan Rates: 1 kpps to 30 kpps
- XY Resolution: 12 Bits
- Color Resolution: 5 bits (for a total of 32,768 colors)
- Colors: Red, Green, Blue outputs
- TTL Shutter Output
- Built in test patterns accessible by button.
Rev3
OLSD V3 Arduino Shield on Freeduino
Click HERE to visit the Rev3 Page.
Specifications:
- Scan Rates: 1 kpps to 30 kpps
- XY Resolution: 12 Bits
- Color Resolution: 3 bits (for a total of 512 colors)
- Colors: Red, Green, Blue outputs
- TTL Shutter Output
- Built in test patterns accessible by button.
So what are the big differences between Rev4 and Rev3? Here is the list:
- Rev4 has a XY Precision Voltage Reference for a more stable picture.
- Rev4 has more colors! 32k vs. 512
- Rev4 has more free IO pins so you can do more with your arduino!
A driver DLL, stand alone test program, and an Arduino Library are provided to make it work. Plus since this is an open source project, all materials are provided to reproduce the board.
There are a few one off versions of the board too. Here is a list so far with links to their respective pages:
- Laser Harp (based on a Rev3 Board)
- V4A (only a couple made)
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