[arm-allstar] simplified USB sound fob

[David McGough]

The CM1xy chips are 3.3V logic.


On Sat, 23 Dec 2017, "Robert Newberry via arm-allstar" wrote:

> I am troubleshooting a simplified usb sound fob from the hamvoip webpage. I
> bought a batch of these a long time ago and all have been great. I have one
> that I can not get to PTT. I've checked the 2n7000 to make sure it works.
> 
> I'm wondering if I am not getting anything from GPIO 13. How much voltage
> should I be seeing from GPIO 13 when it becomes active?
> 
> Thank you
> 
> N1XBM
> Apparare Scientor
> Paratus Communicare
> Allstar Node # 27086, 41540, 41812, 42086, 42658, 42657
> www.radioguysrepeaternetwork.com
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>