thanks for the suggestions, but there are a couple more constraints. this is to trigger an external camera that accepts 0-12V trigger and needs ~100 uA of current. ideally i'd just like to avoid an external circuit and especially the power supply for such board. the perfect solution would be a board and a ethernet cable plugged into that board.
the signal needs to be clean and be close to 12V (if a sound card is used, is it possible to specify the output voltage?)
i'd like to keep the cost to under $100.
aravind.
On 3/15/06, John Demme <[EMAIL PROTECTED]> wrote:
I would be pretty trivial to build use an op amp to get up to the 12V. Plus, with a sound card, you get two channels (more if you have 5.1 on your computer)... Writing the software to output waveform data to the sound card would be interesting... Better yet, you could probably just use a program to generate an x Hz waveform in wav format and dump that to the device.
