The Raspberry Pi can use a USB-to-RS232 serial adapter, as long as there are drivers for the adapter that work on the OS you are running on the Pi.
Alternatively, there are pins on the GPIO header that are connected to a UART on the Pi’s board (pins 6, 8 and 10). With a voltage level converter (e.g. MAX3232) that can convert from the 0-3.3v on the Pi to RS232 levels (-12, 0, +12v), you can use those pins to communicate with a device that has an RS232 port.
Best regards and 73,
Scott HS0ZLW
On 2Mar, 2016, at 13:25, R P ronenp@hotmail.com wrote:
(Please trim inclusions from previous messages) _______________________________________________ Hi there
Is there a way to have a Packet Node with Pi (or any other small size solution that will not require a PC) ?
If yes How do I connect TNC (serial port) to PI is the Pi support USB to serial external interface (like the profilic ones) ?
Or (preferred) something can be done to do the TNC on Sound card (can be an External sound card that connect to the USB of the PI)
Please Advice
Thanks Forward
Ronen - 4Z4ZQ
jttp://www.ronen.org