I posted this on Adafruit’s forums and they suggested I ask here, so here goes:
I just received an Arduboy from Adafruit. It powers up and plays the default game it shipped with quite nicely. But when trying to load new software onto it, it will not show up.
I’ve tried two different computers (linux and win10), and two different USB cables (the one it shipped with, and another one I had for my Android device). I’ve put the latest version of the Arduino IDE software on both computers, added the necessary account permissions to myself for accessing serial devices, followed the FAQ from the Arduboy website, but nothing shows up when plugging the Arduboy in. In the Arduino software, with Arduino Leonardo selected, the “port” menu remains grayed out. On the linux machine, there is no dmesg output when plugging the Arduboy in, which tells me the Arduboy itself is probably defective. I do get dmesg output when plugging the Android in. The cables both seem to work fine when plugging in the Android device I have. Of the LEDs on the Arduboy, only the red light lights up when the unit is plugged in. The green and yellow(?) LEDs never light up.
For comparison, I have an Arduino Nano as well, which shows up fine on both machines (albeit with a different USB connector).
If there’s anything else to try, or any other information I should post, please let me know, otherwise I think I’ve got a bad unit, stuck playing Sirene and nothing else