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Xinyuan-LilyGO / LilyPi

MIT License
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Power on USB ports? #2

Open Juno63 opened 2 years ago

Juno63 commented 2 years ago

There seems to be no power (3.5V/5V) on the USB ports. Is there a special setting to activate the power on USB ports?

Juno63 commented 2 years ago

(GND an GPIO pins seem to work well).

Juno63 commented 2 years ago

LilyPi ILI9481 (GT911) version.

LilyGO commented 2 years ago

You need to switch between 3.3 and 5V

Juno63 commented 2 years ago

No, that is not the solution. There seems to be no 3.5V and no 5V either, LED between GPIO-pins and GND works, LED between USB POWER (3.5V/5V) and GND does not work.

LilyGO commented 2 years ago

Can you take a picture and see what you're measuring?

Juno63 commented 2 years ago

LilyPi_blink Using the basic Blink sketch on pin 25 (or 26) works fine. The red LED is blinking like it should. But the green LED, which is between GND and + (3.5V/5V) isn't blinking at all. This is the same when measuring with my multimeter: Pin 25 (high) to GND: 3.5V (or 5V). POWER to GND: 0 V.

LilyGO commented 2 years ago

USB power switch in 5V 1 ?

Juno63 commented 2 years ago

I tried. Doesn't work. There is no power at all on POWER (3V3/5V).

LilyGO commented 2 years ago

How about using Type-C power?

Juno63 commented 2 years ago

That is what I am trying to do with this USB 3.1 Type-C Screw Terminal Block Connector. But there is no power at all on the POWER pin (3V3/5V).

LilyGO commented 2 years ago

1

Juno63 commented 2 years ago

How to connect i2c sensors to USB port if there is no power on USB power pin?

jaccoT commented 2 years ago

in setup just ttgo->turnOnUsb();

this activates the USB ports.

jwktje commented 2 years ago

What is the maximum amperage we can get from the USB ports?