=== version: chart.py v1.2 ===

creditz: OpenSource ÄÄÄÄT ultimate-solar DOOOOT com

=== What does it do? ===

plot a chart of TEMPer2 temperature data (1x internal temp sensor, 1x external (metal) temp sensor)

=== How to install? + Requirements? ===

connect TEMPer2 USB thermometer to PC

make the script TEMPer2.sh auto start and run as root on startup and it will read every Xsec the values of all TEMPer2 USB thermometers to file

su - root apt install python3 apt-get install python3-serial apt install python3-matplotlib

will need 2x tools that will be stored in

mkdir software cd software

tool1: to query the usb thermometer

git clone https://github.com/greg-kodama/temper.git cd temper/ git checkout TEMPer2_V4.1

give it a testrun

/usr/bin/python3 ./temper.py --json

should print out

[ { "vendorid": 13651, "productid": 40961, "manufacturer": "PCsensor", "product": "TEMPer2", "busnum": 1, "devnum": 3, "devices": [ "hidraw1", "hidraw2" ], "port": "1-3", "firmware": "TEMPer2_V4.1", "hex_firmware": "54454d506572325f56342e3100000000", "hex_data": "8080092e4e200000800108664e200000", "internal temperature": 23.5, "external temperature": 21.5 } ]

(if not open an issue https://github.com/ccwienk/temper/issues as the company behind TEMPer2 might have changed firmware)

`

tool2: will use tool1 to get data

git clone https://github.com/UltimateSolar/TEMPer2_python3_chart.git mkdir /scripts

modify script

vim ./TEMPer2_python3_chart/TEMPer2.sh

absolute path to temper.py tool1

/home/user/software/temper/temper.py --json|grep "temperature"|tee -a $LOGFILE;

interval between data taking (too much data = chart will look ugly)

sleep 60;

cp -rv ./TEMPer2_python3_chart/TEMPer2.sh /scripts chmod +x /scripts/*.sh

create a way to auto run this script (as root) on startup

echo '#!/bin/sh -e' >> /etc/rc.local echo '/scripts/TEMPer2.sh &' >> /etc/rc.local echo 'exit 0' >> /etc/rc.local

chmod +x /etc/rc.local; systemctl daemon-reload; systemctl start rc-local; systemctl status rc-local;

where data will be stored

mkdir /scripts/TEMPer2.data

if the data shall be written somewhere else modify

vim chart.py

modify where the data will be

pata_path = '/scripts/TEMPer2.data'

as root run it and check it displays data

/scripts/TEMPer2.sh

open 2nd terminal non-root

/usr/bin/python3 /home/user/software/TEMPer2_python3_chart/chart.py

it should display a graph with 2x lines (Internal (inside the usb stick) and external temps) CONGRATS :)

hostnamectl; # tested on, but also Debian, should work on almost any GNU Linux Operating System: Ubuntu 22.04.3 LTS
Kernel: Linux 5.15.0-91-generic Architecture: x86-64

PS: may the src be with the user!

test