psu and usb

MIDIbox SEQ
1

Hello, first post here. Thanks TK and everyone involved for this fantastic project!

 

I’m building a SEQ v4 with aout powered by +/-15v and 5v power one linear supplies and I’m wondering if it’s possible to use the usb on the STM32F4 to send midi while it’s connected to the external psu.

2

Hello, welcome to the forum! That shouldn’t be a problem, just leave J17 open/not jumpered.

3

Yes it is possible. Just make sure that there IS NOT a jumper fitted at J17 on the Core PCB. This jumper connects USB bus power to the 5V power input on the core. If you have the jumper fitted , connected a 5V external supply and USB you will end up with two power supplies and may case damage to sometgong.

4

Thanks guys! I was afraid to try it.

Now on to getting this thing finished.