Quote from: in2tactics on June 17, 2017, 06:07:45 AM

Quote from: Namrok on June 17, 2017, 04:18:17 AM

So, possibly stupid question, but I'm new to this.

I'm currently running a pair of 2PACs at 150MHz with Raspberry Pi controlling them. I can tell ample power is a constant issue. I have one clearly substandard USB hub that is powered, but only has a 2 amp power supply. If I try to run both 2PACs on it, eventually one drops out. I can however run 1 off the Pi unit itself, and one off the hub. But that is less than ideal, especially since I'd like to clock them higher.

I have another powered USB hub that is not compatible with Raspberry Pi, but which has a 3 amp power supply. On a scale from "Go for it" to "You're gonna fry you 2PACs", how bad of an idea is it to just use the 3 amp power supply with the hub that normally uses a 2 amp power supply?

Alternately, I did order a Sipolar 10 port HUB, so I could just wait for that to eventually show up from China, but I've caught the bug a bit...

I think there are a lot of unknowns with your question. It is hard to make a judgement call regarding your hub and 3A power supply. One of my concerns would be does your hub and power supply both use barrel connectors or micro/mini USB? If it uses a barrel connector, you need to ensure that your polarities match between the two and that they are the same size.

They both use barrel connectors, and the polarities are the same. I was slightly mistaken about two things however. One is 5V, 2A, and the other was 5V, 5A. Regrettably, I was also wrong about connector compatibility. One is just ever so slightly larger than the other.

I attempted to daisy chain them as well, and still no luck. The Pi doesn't recognize anything at all plugged into it.

I'll just have to wait for my sipolar 10 port to get here. It's encouraging to see other people have had good experiences with it.