Opencockpits hardware question

[silverfibre]

Hi all,

I recently bought someone's old A320 cockpit project. It was a bit of a mess, but I now have inputs responding in the SIOC software, and LED's switching on and off. However the 7-segment display it rather dead.

The 7-segment displays are connected to an IOCard Display, which is connected to a Master card, which is then connected to the USB Expansion card.

My question is, does the Master card need to be supplied by a separate 5v power supply to the two 5v pins? I presume the USB's 5v might not be enough to drive everything.

Hoping someone might now as this hardware is quite old now.

Thanks,
Rob

[Jason L]

Yes, you need to supply power, the 5v over the USB is not enough.

[Joe Lavery]

Jason is correct, the USB port can only sustain a very small ammount of current. In fact connecting too many devices to a USB port can damage it permanently.

The point being that power supplies are so cheap these days it's not worth the risk.

Joe.