I’ve just assembled my new MidiBoy and powered it on in bootloader mode (Blokas logo appears fine), but my Windows 10 PC keeps giving me the error message “USB Device Not Recognised”.
The device appears as “Unknown USB Device (Device Descriptor Request Failed)” in Device Manager. I’ve tried uninstalling the device / reinstalling drivers / powering on & off, etc but nothing helps.
I have installed Arduino IDE 1.8.13, which included various USB drivers.
I’ve also tried a few other things:
- different USB cables
- different Windows 10 PC (gives same error)
- tested other Arduino boards on my PC (these work fine)
- re-soldered components
- tested solder joints with multimeter
- attempted with and without 9v battery power
… but nothing I do seems to work. I’m about to throw this thing out the window!
Has anyone got any suggestions please?!