So I managed to diminish my RPi model A power consumption to the impressive mark of 70mA (underclock + replacing the 3v3 regulator). Low current is important because it is a mobile app (robot/car controlled by SSH). Now I want to add Webcam and Edimax WiFi dongle.
Both worked well with a USB hub connected to the RPi. The problem is that the hub, with nothing connected, pushes the total current above 200mA.
Is there any better solution than consuming additional 130mA just for a hub? Is it worth an attempt to buy a model B and reduce consumption by removing ethernet?