USB-UART 1.8V?

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alibob
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Joined: Sun Jan 08, 2017 8:49 am

USB-UART 1.8V?

Post by alibob » Sun Jan 08, 2017 8:55 am

Hi,

I would like to start a new project with GIMX. I'm hoping that this way I'm able to connect a LG DFGT driving wheel to my xbox 360. There I need a DIY usb cable, usb to serial.
And I'm using Odroid. Arm based like RPi, but there's some little differences. Example the UART line is 1,8V

http://odroid.com/dokuwiki/doku.php?id=en:usb_uart_kit
http://odroid.com/dokuwiki/doku.php?id= ... oport_uart

So my question is, is it even possible to use Odroid for this purposes? And if it is, then I might need the "voltage divider" mentioned in the RPi guide: https://gimx.fr/wiki/index.php?title=RPi =

Thank you for your help! :)

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Matlo
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Location: France
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Re: USB-UART 1.8V?

Post by Matlo » Sun Jan 08, 2017 10:45 am

1.8V is probably too low. The atmega32u4 may not consider it as a high level. An active logic level converter is probably required.
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