I'm hard at work on my tracked, one-armed, one-eyed robot SETH. (http://www.lynxmotion.net/viewtopic.php?f=20&t=7524
I've hit a small speed bump however. The camera I'm using, requires 3.3V, with a range from 3.27 to 3.33V. A bit impractical, so I'm building in the charging dock, which runs on 5V. (still waiting for what range it accepts) The current it draws is 420mA peak, and an average of 340mA in use. (so too heavy to run from botboard logic I think)
I have a 12V batt for the motors, and a 6V batt for the servo's and logic. I'd love to, however, run the logic independently without having to use another battery (I'd prefer NO human interaction to keep the thing running) so I'd like to put in a voltage converter from the 12V battery to the logic, which accepts 5.5V to ~10V. I'd also like the camera to run off of the 12V batt.
So if I'm lucky, the dock accepts something above 5.5V, and then I can run both from that one voltage converter.
This had me wondering though- how do you all run your accessories, power-wise? All those camera's, guns, doomsday devices and sensors must get their power from somewhere. So I'm wondering, how do those with vastly more experience than I handle it? Or am I the only one that worries about this and do you all just constantly swap out 5 different batteries every 20 minutes?
Any advice on how to handle my current predicament?
Food for thought!