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Discussion of precise time and frequency measurement

Environmental sensor recommendations

Mark Sims

Thu, Apr 5, 2018 7:13 AM

I looked at the TEMPer devices, but almost all of them seem to be HID devices that emulate a digi-monkey typing on a keyboard... tis' not something Heather wants to work with. Also, none of them seem to do air pressure. They do have a device that does temperature and humidity and can emulate a serial port. I could not find any info on how to talk to it and it costs more than the dogtaian USB-PA that also does pressure.

I use several of the TEMPer series.

Gary E. Miller

Thu, Apr 5, 2018 5:50 PM

Mark!

On Thu, 5 Apr 2018 07:13:49 +0000
Mark Sims holrum@hotmail.com wrote:

I looked at the TEMPer devices, but almost all of them seem to be HID
devices that emulate a digi-monkey typing on a keyboard...

NTPsec uses them in a polled mode. Very easy to work with.

# temper-poll -c
22.1

Python code to do it all here:

https://github.com/padelt/temper-python

You can get a TEMPer pretty cheap if you order directly from China.

an emulate a serial port.

I find that a negative.

it costs more than the dogtaian USB-PA that also does pressure.

You're looking at list prices, they are a lot cheaper on ebay. But
yes, pressure is nice to have. Next time I need a sensor I'll
try the USB-PA.

RGDS
GARY

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem@rellim.com Tel:+1 541 382 8588

    Veritas liberabit vos. -- Quid est veritas?
"If you can’t measure it, you can’t improve it." - Lord Kelvin

Mark! On Thu, 5 Apr 2018 07:13:49 +0000 Mark Sims <holrum@hotmail.com> wrote: > I looked at the TEMPer devices, but almost all of them seem to be HID > devices that emulate a digi-monkey typing on a keyboard... NTPsec uses them in a polled mode. Very easy to work with. # temper-poll -c 22.1 Python code to do it all here: https://github.com/padelt/temper-python You can get a TEMPer pretty cheap if you order directly from China. > an emulate a serial port. I find that a negative. > it costs more than the dogtaian USB-PA that also does pressure. You're looking at list prices, they are a lot cheaper on ebay. But yes, pressure is nice to have. Next time I need a sensor I'll try the USB-PA. RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 gem@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t measure it, you can’t improve it." - Lord Kelvin