Hi all,

We have a shuttler which we want to get up and running. As part of flashing the EFC (EEM FMC Carrier), we'd like to see the logs through the UART port. My understanding is we need a TTL-serial cable from the W3 pins (GND, TX, RX, P3V3) to usb. Would a serial cable at 5V power, but 3V logic still work? Or is there a large risk for damage? We currently have this cable: https://www.adafruit.com/product/70 which we would rewire to match the pins on the EFC.

Thanks!
AJ

Where did you get it from? M-Labs ones should be already flashed.

5 days later