I was working on a MCUME proof of concept, with my own compiled version. But my combination of a Pico and an ILI9341 display didn’t work.
Luckily, a package arrived. My new scope!
A Rigol DS1074Z+ oscilloscope! The replacement of my CRT version.
My new RigolThe old Crt versionNew and old, both with the ESP dual sine demo i’ve posted about.
This new oscilloscope has 4 channels AND there is a add-on for a 16channel logic analyser.
For my next birthday?!? 🙂
The Rigol can be connected to a wired network. So that’s one of the first things I did. (It came with all software options enabled, so no need to ‘fix’ those)
#!/bin/bash
#set -x
f=MAE
numba=$(ls *png | wc -l)
numbastart=$(( $numba - 10))
numbapadding=$( printf "%04d\n" $numba)
numbapaddingstart=$( printf "%04d\n" $numbastart)
echo "$f "
mkdir -p images/$f
mkdir -p metric/$f
for x in $(seq -w 1 $numbapaddingstart) ; do
a=$(( $x + 10))
for y in $(seq -w $a $numbapadding) ; do
compare -fuzz 20% -verbose -metric $f $x.png $y.png images/$f/$x-$y.png 2> metric/$f/$x-$y.txt
echo -n "."
done
done
echo ""
Step 3 : There are metric stats in a subdirectory, let’s find the most matching parts (top 10)
orgpwd=$PWD
: > /tmp/top10
more metric/MAE/* | grep all | awk '{ print $2 }' | cut -f1 -d. | sort -n |head | while read ; do
grep -H all metric/MAE/* | cut -f1,2 -d. | grep " $REPLY" >> /tmp/top10
done
cat /tmp/top10 | cut -f3 -d/ | cut -f1 -d. | while read part ; do
echo mkdir -p "$part"
startpart=$(echo $part | cut -f1 -d-)
endpart=$(echo $part | cut -f2 -d-)
for file in $(seq -w $startpart $endpart) ; do
echo cp 0${file}.png $part/
done
echo cd "$part"
echo ffmpeg -y -framerate 30 -pattern_type glob -i \'*.png\' -c:v libx264 -pix_fmt yuv420p out.mp4
echo cd $orgpwd
done
Run above script as ./script.sh > mybash.sh
This generates a bash file, check the contents and run using
“bash mybash.sh”
Last step : There are 10 movies in subdirs which should contain the best looping parts. check these with: (use CTRL-Q in vlc to stop looping and go to the next file
ls */out.mp4 | while read movie ; do vlc -L $movie ; done
Not posted in the past, new version using ESPHOME and a m5stickc
Previous version using a ESP12
A “watch” with core and environment temperature of my smoker with a alarm, and button for timers.
ESP32 dac’s drawing on oscilloscope ( no additional components)
ESP32 in front of scope, two clips for x and y
For above i used sin/cos functions 2:3, which creates Lissajous figures. See: https://www.henriaanstoot.nl/1992/01/01/oscilloscope-graphics-using-a-amiga-bonus-vectrex/
3 battery operated buttons (no wires needed) to control my shelly dimmer at the dinner table.
left button on, middle steps per 20% and 3rd button off. (This cheapass button only sends ON commands)
