I picked up a few of the nano’s and one of them does not show up when I plug it in, the other seems to work fine. Is it a dud? What can I try to get it to work? I’ve reset it, plugged and unplugged many times, tried different cables (all known to work with other devices)… The power light is on and the blue light is flashing as if “blink” was installed.
You’re probably missing the CH340 driver your Mac needs to recognize the board as a serial device.
Please see [this guide for direction on installing the correct driver. Once you’ve installed the driver, we recommend rebooting your computer to make sure the driver has installed. Once you log in again, the board should generate a port when plugged in.](https://learn.sparkfun.com/tutorials/how-to-install-ch340-drivers)
Sorry, I didn’t include that in the list of things I’ve tried. Already tried that and if you notice I have one that does work, so it’s probably not a driver issue.
Ah, I missed the fact that the others worked.
Can you PM me your order number?