[time-nuts] webcam app to watch for and time stamp changes

Magnus Danielson magnus at rubidium.dyndns.org
Sun Mar 3 07:11:57 EST 2013


On 03/03/2013 10:00 AM, Poul-Henning Kamp wrote:
> Content-Type: text/plain; charset=ISO-8859-1
> --------
> In message<657D7F7CC03849419A2A90752E6A60A6 at pc52>, "Tom Van Baak" writes:
>
>> When playing with watches a while ago I tried to pick up any 32
>> kHz signal but failed. Those with 1 Hz stepper motors were easy,
>> but LED or LCD displays were too electro/magnetic/acoustic quiet
>> for me to ever detect anything.
>
> Most LCD and LED clocks have a shielding metal-coating on the front
> glass, exactly to eliminate all EMI/EMC issues.
>

Darn. I should have guessed.

Cheers,
Magnus


More information about the time-nuts mailing list