Evening, I have been using this forum for many weeks to help with the construction of my laser projector! You can check out my small progress here:
https://youtu.be/WNaIoATPM7Y
It's a cliche Cmedia USB DAC with DC modification, some opamps and a couple of resistors. I designed a PCB and ordered it from China about 7 weeks ago but i have recently got frustrated with the delays so i bought a breadboard on Monday from the internet to construct the system to have a mess around with.
I have 5 coming so will have a couple left over, I plan to do another revision with my findings, but i used my own schematic on the breadboard so hopefully all is in order . If you would like a board hit me up. Im from the UK probably wont be prepared to ship internationally... but if you are desperate ill be sure to hear from you.
Here is the PCB:
The PCB contains an Arduino which will also allow me to display patters as I have added a dual channel SPI DAC. The source (either from USB DAC OR SPI DAC) is selected with 2 transistors; turning either pair on or off. The Arduino will also read the R G B signal and set a TTL output, but im not sure how well this going to be as the sampling frequency is probably sub 100k but we will soon find out when the laser module arrives.
I have so far looked into making .ild files with various pieces of software and then converting to a .wav file with laserboy which has been great! I was planning on creating a tiled application so the user could select which file to play at parties etc. But I was wondering what pieces of software you can recommend to mess around with?
I ideally was looking for something that lets you select patters, generate patters on the fly almost like windows media player's visualisation. I see that lots of the members have dedicated cards, but is there any drivers that allow me to output the audio real-time instead of having to save ild and converting them manually.
My second question, i hear people talk about q2000 etc etc or cards from professional suppliers. Cheeky question, but has anyone managed to create the firmware for a micro processor of any sort? would be great to use the professional software real time instead of exporting ild files.
I look forward to your responses! I am also creating an instructable when i have some down time. Ill be sure to post it!
Thank you for the all the tips and tricks. I was very pleased with my results today!