I’ve got a DIY Bat detector, today I designed and printed a Case for this PCB.
Below a link to the design files
https://media.henriaanstoot.nl/bat-case.zip
Next todo:
- Weatherproof case
- Alternative power
- Audio Jack
- Remote access with remote sound
I saw a movie clip of two guys playing TAK.
It looked interesting, so I DIY-ed something.
https://en.wikipedia.org/wiki/Tak_(game)
Laser engraved a cork plate.
Cut some wooden blocks into squares, and stained half of it.
Should I engrave something on the blocks?
Worked on bash autocompletion for QP
source below script to get
qp <tab><tab> shortcode
Not happy with both versions yet …
#/usr/bin/env bash
# Version 0.1
qpcompl()
{
COMPREPLY=($(compgen -W "$(qp | cut -f2 -d \' )" "${COMP_WORDS[1]}"))
}
complete -F qpcompl qp
--------------------------------------------------------------------------------------
# V 0.2
_qp_complete() {
local cur prev opts
COMPREPLY=()
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[COMP_CWORD-2]}"
opts="add del"
case "${prev}" in
add)
COMPREPLY=( $(compgen -d -- ${cur} ))
return 0
;;
del)
COMPREPLY=( $(compgen -f -- ${cur}) )
return 0
;;
*)
COMPREPLY=( $(compgen -W "$(echo add; echo del ;echo "" ; qp)" -- ${cur}) )
return 0
;;
esac
}
complete -F _qp_complete -o nospace qp
Game controllers : left into right setup


My Bus Manipulator

And a Jigsaw in progress (with our own made clock in the background)


C64 Pico Amplifier
My C64 had a problem with previous attached speaker.
It drew too much current to drive. And random characters where printed.
Choosing another speaker and a minimal amplifier solved the issue.
(Thanks to Bigred finding the problem at Bornhack 2024)
My minimal amplifier for:


Using below mini speaker:

Today I made a Linux version of Tyrone’s QuickPath tool.
My friend Tyrone came up with a great idea.
A directory switching tool, to move around in often used directories.
You can use a keyword to move around. These keywords are configured in a config file.
Even starting Total Commander with preset directories.
Work/Private/Programming environments.
His version uses PowerShell, but he wanted a multiplatform version, so we have chosen to use Python on both environments.
My version uses Python and Bash.
(Bash is used for a change directory workaround on Linux and bash completion.)
Source will be in Tyrone’s git when finished.
Options:
Tomorrow some laser cutting, so let’s design some things to cut.
Doing a project using leather is something I do not often enough.
So I’m always looking for new ideas/projects.
This weekend, I made some straps for portable painting easels.
Keeping the poles of the tripod together with multiple straps and a longer leather strip allows for easy carrying on your back.
A simple project, I need some challenge next time!


My leather strip cutter I made in 2011.



I was working on a RP2040 HID project, but I needed some components I didn’t have … right now .. again ..
So I made something else ..
A tiny animator for stop motion animations using my webcam, python and OpenCV.
For claymotion or lego or whatever.
The program displays your webcam with the previous snapshot overlayed, so you can position everything relative to your previous snapshot.
Press B to take a frame.
CODE (short but you need OpenCV)
import cv2
from datetime import datetime
# black is just a start empty image ..
img=cv2.imread("black.png");
cap = cv2.VideoCapture(0)
while True:
ret,vid=cap.read()
dim = (800,600)
img1 = cv2.resize(img, dim, interpolation = cv2.INTER_AREA)
vid1 = cv2.resize(vid, dim, interpolation = cv2.INTER_AREA)
result=cv2.addWeighted(img1,0.5,vid1,0.5,0)
cv2.imshow('overlay', result)
if(cv2.waitKey(10) & 0xFF == ord('b')):
now = datetime.now()
current_time = now.strftime("%d_%m_%Y_%H_%M_%S")
filename = '%s.png' % current_time
if not cv2.imwrite(filename, vid1):
raise Exception("Could not write image")
img=cv2.imread(filename);
Pressing B fills your directory with PNG’s
like 24_10_2023_00_01_01.png (date formatted)
convert to GIF
convert -delay 10 -loop 0 24*.png animation.gif