2021-08-18 16:00:51 -06:00
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# comma serial
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2021-08-18 16:10:12 -06:00
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The comma serial gets you access to a low level serial console on your comma three, while providing a stable 12V to power the device.
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2021-08-18 16:00:51 -06:00
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The serial is available on the [comma shop](https://comma.ai/shop/products/comma-serial).
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## setup
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* Connect all three cables to the serial
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* Connect the USB A to your computer
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* Connect the USB-C to the OBD-C port on your comma three
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## usage
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```
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sudo screen /dev/ttyUSB0 115200
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```
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2021-08-23 12:32:43 -06:00
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or use `connect.sh` to run the previous command in a loop.
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The username and password are both `comma`.
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