[arm-allstar] Heartbeat STOP ?

[David McGough]

Hi Luc,

What type of USB fob are you using?

I've had this problem in the past with various different adapters. My
problems were traced to power surges (like during lightning storms),
disrupting the USB bus.

For power surges, make sure you've got a solid ground path all the
way from the RPi power source to the radio/repeater. A single-point ground
is ideal to minimize ground loops. I use a lot of DMK URI adapters and
I also added a ground wire to all my adapters in production use, as can be 
seen here:

https://hamvoip.org/kenwood-TKR/P1030817.JPG
https://hamvoip.org/kenwood-TKR/P1030820.JPG

Minimize the length of the USB cables, carefully placing the RPi near 
the radio/repeater. Also, using a DC-DC 5V power supply for the RPi is the 
strategy I use, again tying the power supply negative lead to the 
single-point ground.  I'll locate photos showing my typical configuration.

For me, this methodology evolved over many years of trial and testing. 
Now, I've not any USB issues for several years.

73, David KB4FXC




On Fri, 10 Apr 2020, "Luc Drolet VE2LUQ via ARM-allstar" wrote:

> Hello everyone,
> 
> I have a little problem with a Repeater,
> sometimes the green LED stops "Heartbeat"
> and to put it back at heart beat I have to restart the Raspberry Pi to put it back on the air.
> 
> I don't understand why the heartbeat stops beating?
> 
> Thank you for your help
> 
> Luc
> VE2LUQ
> 
> 
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