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How much power can the RaspberryPi give to the USB device? Maybe you need a separate powered USB hub.


It depends on the (micro-USB) power supply. For the Model B (with ethernet) a 5V 1A output is recommended.

At 2500mA this should be enough to supply 500mA to each of the 2xUSB ports.

Many popular mobile phone chargers are micro-USB and support 5V 1A upwards.


This might not be the best place for this, but since you're posting on here it may seem worthwhile. I noticed you were planning on doing a couple test runs of the machining/pressing process to work out any other bugs. Are these quantities being taken out of the initial batch of components? Should there be no errors in the design, will these devices be sold off with all the other "regular" ones? If not, is there any plans to get them out to more developers? Are there any other additional dev kits to be given out prior to their release?

Thanks!


I'm afraid I only draw pretty pictures and I'm not part of the foundation or engineering team so I know as much as has been publically posted.

I imagine the 100 being made up now come from the common pool of parts. However, yields of the components and the manufacturing process could affect the initial batch size. Then again, the foundation may have accounted for this :)




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