I have a nmea 0183 depth sounder I would like to connect to a Holybro Pixhawk 6c mini.
On most of the examples I can find on forum and in the documentation for connecting a NMEA 0183 device a RS 422 to TTL converter is used. As far as I can tell these converters use the voltage at vcc as the voltage for the TTL levels. Because the Pixhawk outputs 5 volt on the uart connector this means that 5 volt is also used on tx connector of the converter. I have been unable to find any confirmation that recent Pixhawk flight controllers (and specifically the 6c mini) can accept 5 volt on, for example, telem2.
Can anymore confirm that using 5 volt TTL is okay? Because then i can just use something like this: Amazon.com: NOYITO RS422 to TTL UART MCU Serial Port Signal Mutual Conversion Module with Over-Voltage Over-Current Protection (5V) : Electronics
Otherwise I would have to use the version for 3.3 volt. But then I would also have to supply that on with 3.3 volt at the VCC. Which would means I would have to add a voltage converter.
So in that case the question is: does anyone know a rs422 to TTL converter that accepts 5 volt as vcc but still uses 3,3 for the logical levels?
Thank you.