UT61E+ computer access via CP2110? - Page 1
Forum section: electronics / testgear

author: leif
author_rank: Newbie
timestamp: September 24, 2021, 06:13:38 am
content: Hi,I've just received a UT61E+ and was wondering if someone got the DMM connected via the supplied CP2110 UART bridge to his computer?The communication seems to be bidirectional (see teardown) and it notices if the USB is plugged in (icon on LCD). But unfortunately it does not send any data (or I didn't find the correct settings).I used thehttps://github.com/rginda/pycp2110library to talk to the UART bridge, but never received any data - tried many different baud/parity combinations.Anybody succeeded?Leif

author: joeqsmith
author_rank: Super Contributor
timestamp: September 24, 2021, 04:01:28 pm
content: I'm not sure what you are asking. Do you want to know if I can get the PC to work with the meter using UNI-Ts software or with some 3rd party program? I have not tried to use their software but can easily set it up if you like to see if I run into any problems.

author: leif
author_rank: Newbie
timestamp: September 24, 2021, 09:32:01 pm
content: Hi,thanks for the response. Sorry, I wasn't really precise with my question: I'm looking for a solution to get the measurements of the DMM accessible within Linux/Python-scripts. I guess the supplied vendor software under Windows works but does not allow automated measurements.ThanksLeif

author: joeqsmith
author_rank: Super Contributor
timestamp: September 24, 2021, 09:57:25 pm
content: That makes more sense. I use LabView for all of my automation so I won't be of any help.

author: ledtester
author_rank: Super Contributor
timestamp: September 24, 2021, 11:15:14 pm
content: Quote from: leif on September 24, 2021, 09:32:01 pmThere is HKJ's TestController:https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/or just google for ut61e and python:https://github.com/pklaus/ut61e_python

author: leif
author_rank: Newbie
timestamp: September 26, 2021, 07:04:41 pm
content: Hi,thanks for the links but they do NOT support the 61E+ model. But I've started to reverse engineer the protocol by attaching an USB sniffer on windows and got quite far.See first code here:https://github.com/ljakob/unit_ut61eplusSo for anybody interested, please join the effort.Leif

author: leif
author_rank: Newbie
timestamp: October 03, 2021, 07:29:24 pm
content: It's working nicely - there's also a MQTT bridge that forwards the measurementsIt should work also for other models:UT60BTUT61B+UT61D+UT161BUT161DUT161Ewith minor changes. But couldn't test.

author: Dave_g8
author_rank: Regular Contributor
timestamp: May 14, 2024, 08:16:08 am
content: Thank you very much for generating the python code package.I have used the Serial Bluetooth Android App with the UT60BT and all supported commands and responses appear to work as expected (see below).For information, the comment in the source code relating to the "sendCommand" is a simplified method of calculating the checksum, where 379 (DEC) is the SUM of the first 3 bytes (HEX) "AB CD 03”.“cmd = cmd + 379 # don't ask it's from the java source”

author: Adrian_Arg.
author_rank: Frequent Contributor
timestamp: May 14, 2024, 10:42:27 am
content: In my case, when I am going to use it I restart the PC, and when it finishes starting I launch the unit software, and it works correctly and on the other PC I do not have that problem, but on mine it is due to the conflict with some drivers reddragon headphones