[time-nuts] Temperature (environmental) sensors

Gary E. Miller gem at rellim.com
Thu Jan 5 15:40:59 EST 2017

Yo jimlux!

On Thu, 5 Jan 2017 12:21:44 -0800
jimlux <jimlux at earthlink.net> wrote:

> > http://www.pcsensor.com/usb-hygrometer/temperhum.html  
> I'm kind of curious about their "UI".. hold CapsLock? how does this 
> device manifest itself to the host computer? I saw a mention of HID,
> so it is emulating a keyboard?

It presents to the host OS as an HID/Keyboard,, but sends no data by
default.  I run it on Linux and use the following FOSS Python program to
read it:


Looking at the Python code, a simple binary packet is sent to the
device and it returns a binary packet with the data.

I can't speak to how it works on anything but Linux.  I've never seen
the TEMPer interfere with anything.

RGDS                                                 Veritas liberabit vos
GARY                                                     Quid est veritas?
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem at rellim.com  Tel:+1 541 382 8588
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