Hello,
I’m trying to make a USB 2 USB with AT90USB1286. The reason to use AT90USB1286 is that it has a bigger eeprom for QMK with VIA enabled.
I’m a total noob when coming to circuit design. I only have experience working with Atmega32u4 in simple designs, so please go easy on me if I’ve made obvious mistakes.
I’ve tried 3 different designs but still not able to get it to work. This is the latest one. Kicad project attached.
When I plug into the USB it didn’t recognize the device and the MCU heated up quickly, it’s hot enough to burn my figure.
I’ve used PCBA service to rule out the possibility of my bad soldering.
I'm pretty much defeated and I can’t figure out why it’s not working with my limited knowledge in electronics. Can anyone help please?
