Web platform USB power supply

See the latest version on the documentation wiki.

Markus Gritsch added a USB power supply jumper to his web platform:

I found it convenient to be able to power the Web Platform using my iPhone USB charger and a normal USB cable.  It is also convenient when presenting the board to friends and powering it using their computer.  Therefore I soldered a pluggable (via two DIL socket pins) connection from the USB power to the 3.3 volts regulator (picture attached).  I measured the consumed current which is about 200 mA, so when powering no additional hardware with the Web Platform it should be ok for most USB ports.

In a future revision of the board maybe a switch could be added to choose the power source, similar to the solution on the Seeeduino.

You can buy an assembled web platform for $40, including worldwide shipping.

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1 Comment

  1. Pretty cool!

    Ideally, though, the FTDI chip would be programmed with the current draw so that the host computer knows how much power is disappearing through that USB port.

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