Navio+ UART TX RX logic voltage

Navio / Edge Hardware
1

I was wondering if anyone can help me with my question on the logic level voltage of the TX and RX UART breakout on the Navio+. I see a 5v power supply pin but is the TX and RX level shifited 5V or is it 3.3v. I ask as I have a UartSBee from SeeedStudio and I can select the logic voltage on it but if its 3.3V RX and TX I need to find a way to supply it with 3.3V, plus I don’t want to fry it.

Thank you in advance for your help.

2

All logic levels on df13 ports are 3.3V, supply is 5V as stated on the board.

3

Thank you so much, I just wanted to check before I go and fry anything.

4

Is this also the case with the Navio2? I assume it is as the 3dr radios use 3.3v logic for rx/tx.

Dale

5

Dale,

Yes, we simply route the UART from the Raspberry Pi. Logic levels are 3.3V.