I'm trying to put together a telemetry video system on a race car. It will consist of 2-4 video cameras. Because of the environment, I need light and cheap components. I'm considering the following:
1) USB2 Webcams, into a USB hub.
2) Fire-i cameras, as they can be daisy chained into a firewire port. (Does anyone know of limitations/performance of multiple cameras on one port?
3) Several 'spy'/'pinhole' cameras, with analog inputs going into a multi channel pci card;
Whichever method I use, the input will have to be handled by a small processor (eg M10000 Mini-ITX).
Eventually, the data will also be transmitted real-time to the pits.
Does anyone know of any formus/howtos/sites where people have done this and reviewed different cameras?
Thanks for the link! I'll keep them in mind; however, I was looking for somewhat cheaper (under $100) cameras... is there a review of the X10, ebay mini cameras, etc somewhere?
Also, what dedicated hardware can you point me to? I've seen various setups that do a once-a-lap data 'dump', but I'm looking for continous transfer.
I wanted a PC because a) its cheaper, b) its fun to do it yourself, c) I will also run a GPS/accelerometer nav system as well as daq and a display.
i think a m10000 won't be enough cpu power to handle the multiplexing of the video though. i have seen some cards that do it though.
don't get the x10's. the quality on those really suck.
once a lap? it'd need to be a really really fast network connection. if u figure a lap is gonna be like 1 minute or 2 minutes, that's a 10+meg file that you'll want to transfer within a matter of a second (when the car passes within range of the receiver in the pit) maybe sometihng for 802.11a but then the range for the receiver is decreased.
Which cards would do the multiplexing? I want to get at least 25fps (recorded) from each camera.
As for the once a lap.. that's what old systems used to be like. I want to have a continous feed.