[Question]How to power the board using USB adapter

[griffinmt]

I have my esp-01s loaded with ESP3D and I can connect to it while plugged into USB programming adapter. But I need to connect it to my Ender 3 Pro using a 4.2.7 board and that will be via its USB micro port. But then the esp-01s gets no power. How do I supply the 5 volts needed while letting the data pass across in a serial mode?

[github-actions[bot]]

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[luc-github]

did you read the wiki ? the board is same as this one no ? https://github.com/luc-github/ESP3D/wiki/Creality-CR-10-Ender-3

[griffinmt]

Would plugging both the printer and the esp01s with adapter into a powered usb hub likely work?

[luc-github]

not sure will be same GND

[griffinmt]

The gnd and +5v should go all the way through the usb micro connector, would they not join up on the 4.2.7 board?

[luc-github]

try you will see, it won't damage if not

[griffinmt]

I have several raspberry Pi 4 systems. Wish I could run this code on it. They are just sitting around collecting dust. :-)
Thanks for your help.

[liqijian101]

The ESP chip can not communicate with the ender motherboard’s CH340 chip through the USB interface. There are two solutions, one is to fly a wire on the motherboard’s CH340 chip pin, and the other is to connect the motherboard to the USB port using a chip with the USB host function

here
https://b23.tv/dx8a07o