about uart spitting garbage

[rrryy39]

Hi everyone I am new here. I recently got the board and everything but when trying to read serial line I got stuck. I purchased a really good serial to usb converter which support baud rate is 921600 (moxa uport 1150) but still got garbage. TX has 3.3v, any tips on debugging this? Thanks in advance.

[manny]

What board did you get?

The (moxa uport 1150) is a converter to RS232 depending on the board this is not correct. RS232 has signals with low of -3 to -12V and high signal of 3 to 12V. Most boards use uart that uses signals between 0 and 3.3 or 5V

[rrryy39]

I ordered the foccci evcc charging board through JLCPCB, and flashed the Clara software into it.

[manny]

In that case I think your cable will not work.

RS232 and uart are different

The foccci board uses 3v3 instead of 5V
So you need a different usb adaptor. If you google "usb to uart" there are a lot of cheap boards.

Maybe you have a arduino? That can be used as a adaptor as well.