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I have a Pi4 that I have connected to a 7" touchscreen. The touchscreen is powered by a microUSB cable, the Pi4 is then powered through the GPIO, per the instructions. I keep getting the low power yellow lightning bolt.

Can I run the Pi4 off its own power supply through the USB-C port, and the touchscreen off its own MicroUSB port, after disconnecting the power supply to the GPIO? Or is there a better solution to fixing the low power signal?

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    You can run two separate power supplies. Just pull off the dupont wires. – Dougie Jan 17 '20 at 21:27

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