Read multimeter LCD screen and email results

[TaoTao24]

Hi all, first of all apologies if i am not posting in the right forum:
I am new to raspberry pi, and i have a basic question : is it possible to read results from a basic LCD screen (multimeter screen...) and save them in a log file?

Many thanks
Tao

[FTrevorGowen]

Hi all, first of all apologies if i am not posting in the right forum:
I am new to raspberry pi, and i have a basic question : is it possible to read results from a basic LCD screen (multimeter screen...) and save them in a log file?

Many thanks
Tao

Reading directly from the screen, whilst not impossible, could require a lot of extra "bits & pieces". However, if the multimeter has an appropriate interface certainly possible. FWIW, what about this one:
https://www.cpmspectrepi.uk/raspberry_p ... 000zc.html
Whilst "BluElf" was not a Pi, but another computer running Linux, the post-processing and "capture" software was/is portable to Raspbian - part of what I call my "pi-tools" collection:

Code: Select all

pi@raspiP4B4b-32GbP:~ $ cd pi_tools_etc/
pi@raspiP4B4b-32GbP:~/pi_tools_etc $ ls -laF
total 36
drwxr-xr-x  7 pi pi  4096 Jun 20  2019 ./
drwxr-xr-x 35 pi pi  4096 Apr  4 15:46 ../
drwxr-xr-x  7 pi pi  4096 Aug 28  2019 dmm4000zctools-0.0/
drwxr-xr-x  8 pi pi  4096 Feb 19 17:10 i2c_spi_chips-0.0/
drwxr-xr-x  2 pi pi  4096 Aug 28  2019 RaspiCidLogs/
drwxr-xr-x  8 pi pi 12288 Jan 27 12:34 RasPiScrnShots/
drwxr-xr-x  7 pi pi  4096 Mar  5 16:47 usdcard_tools-0.0/

Trev.

[neilgl]

Ah, if you have a camera on the pi, you could take pictures of the screen then use OCR sofware to "read" the numbers e.g. tesseract-OCR.
MIght not be fast enough for what you want.