USB Control
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Is there a way to control Voltage output of a USB Port. I'm trying to connect a custom made circuit through USB and send power on request to it.
I don't know but if you can the answer would be here http://www.usb.org/developers/docs/
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Is there a way to control Voltage output of a USB Port. I'm trying to connect a custom made circuit through USB and send power on request to it.
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AFAIK a USB can only supply a maximum of 5V anyway and I think it's fairly constant, that's why big devices such as printers have to be plugged into the mains.
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Yeah... 5V is plenty ...however, I need to know if I can trigger the supply voltage on and off somehow. I don't need the USB to supply me with any power, but just act as a switch. I haven't had much time to research this, thanks for the replies so far.
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I'm pretty sure that the power is supplied constantly in most cases, it'd probably be wiser to use the data line and when it's on transmit 0xff continuously and when you want off transmit 0x00.
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Interesting. If I recall correctly the Data lines supply 3.3V when transmitting and 0 when not ? If so that's great. Now I have to find away to communicate with the USB Port itself via code. Thanks for the replies.