SparkFun Forums

[Twlim]

I loaded and tried everything as per guidelines, including installing the FTDI drivers. But I the usbserial port is not available.

[TS-Brandon]

Can you try a full system restart, then plug in the board before starting the Arduino IDE?

Have you tried multiple USB cables?

[Twlim]

Thanks. Will try using different cable.

Does Apple includes the FTDI driver already or do we still need to download and install from FTDI site as per Sparkfun advisory. I notice this advisory was a few years old.

I checked that the FTDI .kext after downliaded is installed in /Library/Extensions. Is this correct or should in /System/Library/Extensions?

Read that if Apple already includes FTDI driver. Will this be conflicting?

Btw, I see another driver FTDIkext.kext in the /Library/Extensions. Is this a valid driver?

[Twlim]

Edit - I use a new thicker cable and it detects a port - cu.usbserial-1410. Thanks.
btw, the blue light on pin 13 keeps blinking. Is this normal?

[TS-Brandon]

The boards are programmed with a Blink sketch in production, so the blinking is normal.

[Twlim]

Thanks. What is the recommend transfer rate to use. I notice that the USB C connection can be very fast. I had to lower it to be able to load to the board from my Mac.

[TS-Brandon]

460800 worked on my Mac but it can differ for other users. I would suggest trying different speeds until you get a successful upload.

[Twlim]

Thanks Brandon. All is good now