Uni-T UT71C DMM-Software for GNU / Linux
2014 Christian Lück
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What this software is supposed to do:
Reads data from meter and prints it to stdout in a comma-separated format.
This data can be imported with libreoffice or for example octave
to get graphical representations.
This software is designed for the USB-datacable with the following hardware:
IC-imprint: "WCH CH9325"
lsusb information: "QinHeng Electronics HID-based serial adapater"
idVendor : 0x1a86
idProduct : 0xe008
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Supported Hardware:
1) Tested:
Uni-T UT71C
2) Might also work for:
Uni-T UT71A/B/C/E
Voltcraft VC-920 and VC-940
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This SW is based on the work of the following persons (thanks!):
Rainer Wetzel (http://diyftw.de/wiki/doku.php?id=projekte:ut61e)
Ralf Burger (http://www.erste.de/UT61/index.html)
Alan Ott (http://www.signal11.us/oss/hidapi/)
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Compile:
1) cd into the directory where you found this readme (and the sourcefiles)
2) clone hidapi: git clone git://github.com/signal11/hidapi.git
3) make
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Usage:
unfortunately hw access is required -> sudo
- Note, that the cable is a bit buggy and might refuse to work correctly.
To fix this, you can execute the 'cablefix.sh' script which suspends the
cable.
Thanks to Ralf Burger, who discovered this bug + workaround.
Further information about this: http://erste.de/UT61/index.html
- only 1 interface cable connected, autodetect:
sudo ./ut71dmm
- multiple interface cables connected, use first cable:
sudo ./ut71dmm
- multiple cables, find out the available adresses:
lsusb | grep 1a86:e008
will output the available devices:
Bus 002 Device 032: ID 1a86:e008 QinHeng Electronics ...
Bus 002 Device 031: ID 1a86:e008 QinHeng Electronics ...
Bus X Device Y converts to XXXX:YYYY:00, with X and Y in hex
now a specific device can be used by:
sudo ./ut71dmm 0002:0020:00
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License:
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.