Unknown USB Device

[LIVESKILLER]

I really like your project and can't wait to make one myself. I directly used UART to flash your bin file. I also installed the driver from Arduino_STM32. However, the Device Manager still shows an "Unknown USB Device". Is there a way to fix this, or do I have to use the ino file?

[CoretechR]

Hi, honestly I always went and installed the bootlader first and then uploaded the Arduino sketch. Maybe flashing the bin file alone is not enough.

[LIVESKILLER]

Hi, honestly I always went and installed the bootlader first and then uploaded the Arduino sketch. Maybe flashing the bin file alone is not enough.

Thank you for your reply. I think I’ll just follow your steps carefully. There’s one more question: in the BOM table generated from your .brd file, the 1µF and 2.2µF components are listed with a 0805 package, but the BOM table you provided specifies 0603. I’ve checked and the pads seem suitable for both 0805 and 0603 packages. Could you please advise which one I should follow?

[CoretechR]

I have only used 0603 parts myself but you could use both 0603 or 0805 in that case. The different pads might be a mistake from copying Sparkfun's library parts.

[LIVESKILLER]

I have only used 0603 parts myself but you could use both 0603 or 0805 in that case. The different pads might be a mistake from copying Sparkfun's library parts.

I'm very happy to say that I've successfully lit up the keyboard and it's now working properly. Since this keyboard comes with a built-in screen, I've been thinking we should make the most of this feature. Is it possible to use "Keybon Companion" to display the computer's status on the keyboard—like real-time CPU usage, memory, temperature, and more? Alternatively, could it show stock prices or weather? If it had these functions, it would definitely be very popular.

[CoretechR]

Great to hear that you got your Keybon to work!
The features you describe are definitely possible with this hardware. You could probably even display videos on the screens.
But I am afraid you would have to implement this yourself ;)