[arm-allstar] 13 V to 5V PI pwr supply

[Steve Wright]

On 14/10/15 04:22, James R. Pilgram wrote:
>
> From: James R. Pilgram 
> Sent: Tuesday, October 13, 2015 5:45 AM
> To: arm-allstar at hamvoip.org 
> Subject: Re: [arm-allstar] 13 V to 5V PI pwr supply
>
> Tonight I was setting up a Raspberry Pi2 with a simplex CDM750 and converted usb fob getting all kinds of screwy problems. The Fob was going in and out and failing. 
>
> In my case, I was using a Astron SS-25 switching power supply to power the radio and one of the 12 to 5 volt switching modules to power the Pi. The radio was going crazy, the fob was going crazy, the Pi was going crazy and the supply crow-barred. I grabbed another supply, A Samlex SEC1223 switching supply and got the same issues. We were having a similar issue with another node on Maui only he was using a DMK-URI and a switching supply Powering a 12 to 5 volt module and a simplex radio from the same supply. 

Sounds like you have a PSU with an isolation problem, or a noisy
groundloop somewhere.

Swap out various PSUs until it goes away.


Steve