AaronVAudio
Member
Hi, I'm nearing completion of building a foot pedal sample player and MIDI controller. It all functions when connected to my laptop by USB, albeit with some noise when playing samples, but when I try to connect it to other USB power, it doesn't function. It does part of the start up, but seems to get stuck before it gets to the point where it can play samples or send MIDI or respond in any way.
So, my questions are:
1) Is the noise an issue with USB power? Maybe a ground loop kind of thing?
2) Is there a way to run it off a USB power brick? Or should I build in a different power option? I was considering setting it up to run on a 9V pedal power supply (stepped down to 5V) so it can integrate with my other guitar pedals.
Here's the internals, and a clip of the noise issues.
https://www.youtube.com/watch?v=FkKzRurRfzo
So, my questions are:
1) Is the noise an issue with USB power? Maybe a ground loop kind of thing?
2) Is there a way to run it off a USB power brick? Or should I build in a different power option? I was considering setting it up to run on a 9V pedal power supply (stepped down to 5V) so it can integrate with my other guitar pedals.
Here's the internals, and a clip of the noise issues.
https://www.youtube.com/watch?v=FkKzRurRfzo