MIDI control and power issue related question

Other Hardware Audio
1

Hi there,

I am having what I think may be a power issue. I am using 4x arduino type microcontrollers (2x Pro Micros and 2x Adafruit bluefruit feather LE's) on a single USB hub with a mac pro late 2013.

Each of these has 2x sensors (HC-SR04 pings sensor and RC522 RFID reader). Each circuit sends midi simultaneously. However, I find that one or two circuits continually become inactive and I need to replug the usb cable to bring them back to life. I'm guessing this is a power issue as the hub is unpowered?

Also, these circuits are spitting out loads of midi at a very high rate all the time, MIDI which is snet without a delay, though I'm not sure if this should be an issue, perhaps that could be the other cause.

Basically, I want advice on the correct type of hub to get to power this setup so I know that at least I can rule out a power related issue? I'd appreciate any tips! Many thanks :slight_smile:

2

Monoth:
Also, these circuits are spitting out loads of midi at a very high rate all the time, MIDI which is snet without a delay, though I'm not sure if this should be an issue, perhaps that could be the other cause.

Why are they sending out MIDI all of the time? MIDI Controllers should only send updates when you turn a knob or push a button, not all the time.

My cheap USB hubs sometimes stop working when a lot of devices are plugged in for a long time, especially when using an Arduino that I update a lot to (maybe because they switch USB types from CDC for upload to MIDI when running?). Just unplugging them usually solves the problem.

Pieter