Hello, I want to powering my USB hub for Raspberry Pi with this DIY. Please I want to know if is possible or not. Thank you
It is doable however the USB hub must provide current protection circuit in case of power surge malfunction.
The picture is not accurate as you are using the USB input for both USB connection and power.
As per the USB 2.0 spec the maximum current accepted for the USB port is 500 mA.
Recommended is to use a powered USB hub with all the required components.
Spec Current Voltage Power
USB 1.0 150 mA 5 V 0.75 W
USB 2.0 500 mA[a] 5 V 2.5 W
USB 3.0 900 mA[b] 5 V 4.5 W
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