[SGVHAK] Arduino power question

[David Flynn via HAK]

I don’t think there is an issue.  I plug USB into things with their own power all the time, haven’t had a problem.

Dave Flynn
Oxford V.U.E., Inc.
office (626) 256-6557
cell (626) 893-6654
dflynn at oxfordvue.com



> On Dec 15, 2017, at 11:11 PM, Claude Felizardo via HAK <hak at sgvhak.net> wrote:
> 
> Dave,
> 
> I have powered my Arduino with the standby power from the ATX power supply. My concern is possibly damaging my laptop if I leave the USB cable connected while receiving power via the 5v pin on the board.  Is there anything I can do to prevent current loops?
> 
> Claude
> 
> 
>> On Dec 15, 2017, at 4:40 PM, David Flynn via HAK <hak at sgvhak.net> wrote:
>> 
>> I haven’t done it, but yes, you should be able to power the Arduino from the standby power by connecting it to the 5v directly (needs only about 40ma) and turn the main on with it. A real-time clock with a battery would be a good thing to add too.
>> 
>> Sounds like a fun project.
>> 
>> Dave Flynn
>> Oxford V.U.E., Inc.
>> office (626) 256-6557
>> cell (626) 893-6654
>> dflynn at oxfordvue.com
>> 
>> 
>>