Please suggest the connector part number for interfacing the extension ports.
Also what is port name for the UART? /dev/tty**?
The UART is running at 1.8V. I assume to interface with an arduino, a logic level shifter such as https://shop.pimoroni.com/products/sparkfun-logic-level-converter-bi-directional?utm_medium=cpc&utm_source=googlepla&variant=7493045377&gclid=COLv6bC58dICFRBmGwod6a4CBA
will do, right?