Multimeter software that workes with many brands? - Page 1
Forum section: electronics / testgear

author: XOIIO
author_rank: Super Contributor
timestamp: May 08, 2014, 01:57:08 am
content: Hey all, I had noted it somewhere and promptly forgot, but I recall seeing several times a free bit of software for interfacing with all types of data logging multimeters, what is it?

author: PedroDaGr8
author_rank: Super Contributor
timestamp: May 08, 2014, 02:31:39 am
content: Quote from: XOIIO on May 08, 2014, 01:57:08 amUltraDMM?

author: XOIIO
author_rank: Super Contributor
timestamp: May 08, 2014, 02:38:20 am
content: Quote from: PedroDaGr8 on May 08, 2014, 02:31:39 amBingo, thanks. Knew I'd recognize it when someone said it.

author: Wytnucls
author_rank: Super Contributor
timestamp: May 08, 2014, 02:39:51 am
content: UltraDMM doesn't work with the UT71 series.This one perhaps:http://sigrok.org/wiki/Supported_hardware#Multimeters

author: XOIIO
author_rank: Super Contributor
timestamp: May 08, 2014, 02:50:55 am
content: Quote from: Wytnucls on May 08, 2014, 02:39:51 amYeah figured that outI'm looking for one that might datalog a bit better or have a better live graph, the UNI-T software is fine, but excel says it is not in that file format yet it saves it as that.That software shows it as "in progress" so I suppose it will come on an update.I also need to maybe get a bus pirate or something, there is a small 2x4 pin header layout that I wonder if it might be for programming, if I could read the firmware and maybe tell it that it is the UT71D I could get the 10k data logging points instead of a measly hundred. It would be sweet to have that for offline and I bet that it is the exact same board as the UT71D

author: Wytnucls
author_rank: Super Contributor
timestamp: May 08, 2014, 04:48:42 am
content: The CMOS serial EEPROM is the same on the B and D models (512K I2C). The C and E models probably use the same chip.It should be possible to release all the memory through software.

author: XOIIO
author_rank: Super Contributor
timestamp: May 08, 2014, 05:27:40 am
content: Quote from: Wytnucls on May 08, 2014, 04:48:42 amI was thinking the UT71C and D would be the same, since the E ads power monitoring with an adapter and I think another mode.I'm having troubling finding an eeprom chip, so far just a couple op amps, voltage references, and ram for the LCD. Once of those LCD ram chips has a sticker with C written on it so maybe it also works to hold the cal data.

author: XOIIO
author_rank: Super Contributor
timestamp: May 08, 2014, 05:29:52 am
content: Wait, found it! 24lc515h!http://ww1.microchip.com/downloads/en/DeviceDoc/21673E.pdfTis the same beast!

author: zapta
author_rank: Super Contributor
timestamp: May 08, 2014, 05:59:38 am
content: Kst is very useful for drawing live graphs.Sent from my Nexus 5 using Tapatalk

author: Wytnucls
author_rank: Super Contributor
timestamp: May 08, 2014, 06:12:33 am
content: Here is the layout on my 71D:

author: XOIIO
author_rank: Super Contributor
timestamp: May 08, 2014, 06:20:13 am
content: Quote from: Wytnucls on May 08, 2014, 06:12:33 amBasically identical to mine in the thread over here:https://www.eevblog.com/forum/testgear/hacking-the-uni-t-ut71c-(wipneed-help)/Can you dump the rom to a file? (and if so give me instructions/the tools needed to do so?)Obviously the sticker with C on mine is not cal data, but just the model number for when they are putting them together. Do you think changing the rom will mess up cal data?

author: Wytnucls
author_rank: Super Contributor
timestamp: May 08, 2014, 07:43:39 am
content: Sorry, I don't have the tools or the skills to extract the ROM file.I wouldn't fiddle with it too much. Enjoy the meter for what it does. Internal data capture is just a small part of its capabilities.

author: XOIIO
author_rank: Super Contributor
timestamp: May 08, 2014, 03:19:19 pm
content: Quote from: Wytnucls on May 08, 2014, 07:43:39 amYeah, true enough but being able to datalog every second for almost 7 days would be awesome.

author: Wytnucls
author_rank: Super Contributor
timestamp: May 08, 2014, 03:23:41 pm
content: The 9V battery won't last much longer than 3 days.

author: danb35
author_rank: Contributor
timestamp: May 08, 2014, 03:31:07 pm
content: Another piece of free and open source software that supports a bunch of DMMs is QtDMM (http://www.mtoussaint.de/qtdmm.html). It runs under *nix and MacOS; not sure about Windows.

author: XOIIO
author_rank: Super Contributor
timestamp: May 08, 2014, 04:04:48 pm
content: Quote from: Wytnucls on May 08, 2014, 03:23:41 pmYou could always just hook up a power supply.

author: linux-works
author_rank: Super Contributor
timestamp: May 08, 2014, 04:36:34 pm
content: I used qtdmm on the vichy cheapie dmm:I think I also was able to use qtdmm with some of the old radio shack rs232 meters.