[arm-allstar] RPi3 LEDs acting weird

Larry larry at thunderbolt.net
Mon Jan 1 17:03:13 EST 2018


The solution to my blinking LED ...  As always Doug you were 
right...Power Supply.

I was using my bench supply while building a few new Pi nodes. 
Supposedly it has more than enough current. I Had checked the Voltage 
many times and was always set for 5.15 V out
when feeding the Pi3.  Current regulation must be flaky as the Pi's Red 
LED would stay on steady whenever the USB FOB ptt was active and passing 
audio.

Solution was to drag out one of the Ebay Chinese 12 volt to 5 volt 3 amp 
converter and hook it to 12 volts from the bench supply.
Flip the switch and the Pi3 Red LED is rock solid.

Love those little ebay converters. For the price you can't go wrong.

Larry - N7FM



On 01/01/2018 08:48 AM, "Doug Crompton via arm-allstar" wrote:
> Larry,
>
>   It sounds like you have a power supply problem. The red light on the Pi
> should not go out during normal operation. It also possibly could be a bad
> SD card or a bad image load.
>
>
> *73 Doug*
>
> *WA3DSP*
>
> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>
>
> On Mon, Jan 1, 2018 at 3:57 AM, "Larry via arm-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
>> I get to ask the the first dumb question of the year.... yea!
>>
>> I have a Pi 3 node installed with the early 1.5 version of hamvoip
>> software.
>> It has always been updated to the latest as soon as a notice appears.
>>
>> Node works just fine but the Pi LEDS are acting weird.
>>
>> Red power LED is on the green LED next to it blinks off and on about 12
>> times.
>> The red LED then turns off and back on. The cycle repeats it's self over
>> and over as long as the node is powered.
>>
>> Anyone ever seen this or is there something significant about the LED
>> cycling? Watchdog indicator or ???
>> I Just built up another RPi3 this evening and it doesn't do this.
>>
>> Larry - N7FM
>>
>>
>> _______________________________________________
>>
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>>
>> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>
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>



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