Hermann-SW

#!/bin/bash
if [[ "$1" == "--help" ]];  then  echo Format: "$0" "[options]"; exit;  fi
read -r w h dummy < <(libcamera-vid --list-cameras | \
                      tail -1 | cut -f2 -d/ | sed "s#x# #")
dummy=$dummy
libcamera-vid -t 0 --width "$w" --height "$h" --preview=0,0,"$w","$h" "$@"

Hermann-SW

#!/bin/bash
if [[ $# -lt 4 ]];  then  echo Format: "$0" width height framerate ms [us]; exit;  fi
if [[ $# -gt 4 ]];  then  SHTR="--shutter"; else SHTR="";  fi
for((m=1; m<=5; ++m))
do
    if  media-ctl -d "/dev/media$m" --set-v4l2 "'imx296 10-001a':0 [fmt:SBGGR10_1X10/${1}x$2 crop:($(( (1440 - $1) / 2 )),$(( (1088 - $2) / 2 )))/${1}x$2]" >/dev/null;  then  echo -e "/dev/media$m\n"; break;  fi
done
libcamera-hello --list-cameras  ;echo
rm -f /dev/shm/tst.pts
libcamera-vid --width "$1" --height "$2" --denoise cdn_off --framerate "$3" --save-pts /dev/shm/tst.pts -t "$4" "$SHTR" "$5" -o /dev/shm/tst.h264 -n  ;echo 

Hermann-SW

#!/usr/bin/python3
#
# Determine club head speed of a golf swing (high framerate video) frame:
# https://forums.raspberrypi.com/viewtopic.php?t=345368#p2070418

import cv2
import numpy as np
from sys import argv, exit

Hermann-SW

#!/usr/bin/python3

import numpy as np

from picamera import PiCamera

win = 100, 100, 640, 480

picam = PiCamera()
picam.resolution = (640, 480)

Hermann-SW

#!/usr/bin/python3

import numpy as np

from picamera2 import Picamera2, Preview

picam2 = Picamera2()
picam2.configure(picam2.create_preview_configuration())
picam2.start_preview(Preview.QTGL, x=100, y=100, width=640, height=480)
picam2.start()

Hermann-SW

# Based on: https://stackoverflow.com/questions/43665208/how-to-get-the-latest-frame-from-capture-device-camera-in-opencv/54755738#54755738
#
# Added:
# - configurable delay handling
# - renamed class
# - per frame timestamp output
#
import cv2, threading, time, queue
from sys import argv

Hermann-SW

from subprocess import Popen, PIPE
from sys import argv
import re

stop = "qwertz1234567890ufugUUGUGUgUgUGuGFzR775§%!=%%54321rUF/Rtt8t8TTT4§2hj\n"
bye  = ["tschüs","do_widzenia","ahoj","ciao","salut","adieu","vaarwel","farvel"]
byes = re.sub(r"['[]]*", "", str(bye))

cmd = "bash" if len(argv) == 1 else argv[1]

Hermann-SW

from subprocess import Popen, PIPE
from sys import argv

cmd = "bash" if len(argv) == 1 else argv[1]

p = Popen(cmd, stdin=PIPE, stdout=PIPE)

while True:
    p.stdin.write(bytes(input(cmd + ": ") + "\n", 'utf-8'));  p.stdin.flush()

Hermann-SW

https://github.com/Hermann-SW/RSA_numbers_factored/

# RSA_numbers_factored.py
#
# v1.9
#   remove not needed anymore RSA().__init__()
#   add RSA().square_sums()
#   manual transpilation to RSA_numbers_factored.js
#   new home in RSA_numbers_factored repo python directory
#   gist now is pointer to new home only

Hermann-SW

\documentclass{article}
\usepackage{mathtools}
\begin{document}

\begin{eqnarray*}
     (2^n)! \cdot 2  & =& 2^{2^n} \cdot  \prod_{j=1}^{n-1} \enspace  \prod_{i=2^{n-j-1}+1}^{2^{n-j}}(2i-1)^{j} \\
\end{eqnarray*}

\end{document}