Homepage of Hermann Stamm-Wilbrandt

I&C
Information and Contact

Blog
<myXsltBlog/> <myXsltTweets/> <myCE/> <myAndroid/> <myFrameless/>

Tools / Games
<pbmtobraille/> (C)  <echo-e.to.braille.html> (web)
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<simple_client-side_bookmarklet_creator/>   (JavaScript)
<GraphvizFiddle/>   (online Graphviz editor&layout [based on Viz.js])
<uʍopǝpᴉsd∩/>   ("foobar" → "ɹɐqooɟ" [browser XQuery])
<n-queens.xsl.xml/>   (n-queens, 4 ≤ n ≤ 9 [browser XSLT])
<peg-solitaire/>   (1-player board game [browser XSLT])
It knows all solutions for 33/37/39 pegs English/French/3-3-2-2 boards.
You may choose "Cheat" link (based on 1+16+64=81GB data files on this website).
There are 2,990,375,067 good positions for French board that allow to end with single peg on target field (forum link).
Instructions on how to revert a move can be found just above that posting (animation):

XSL
XSL (Extensible Stylesheet Language), xsl-list (Open Forum on XSL), related articles and files (priorartdatabase)

Neckarsteig
Hiking 9 stage Neckarsteig in 4 days

E3BM
Eberbach 3-Mountain Marathon

myRunning & myStreak
My running activities and current Running StreakRunning abroad

oeis.org (The On-Line Encyclopedia of Integer Sequences)
my submissions (ordered by "modified")

new binomial formula "C(a+b,c) = sum(k=0..a, …" and animation in A007318

Robotics
Raspberry camera / gstreamer / raspivid / raspiraw
Teaser video of a closing mouse trap; the whole closing is completed in 0.01s(!).
This is an animation from Raspberry v2 camera 640x75 video captured at 1007fps(!), played at 1fps.
When the mouse trap bar touches down, it hits the black piezo igniter, showing a spark in front:

2-wheel balancing
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runaway robot 1-wheel braked
Find more 2007 images & videos on my German language homepage

Wireless control Eachine E52 FPV drone (via TCP replay [attack])

raspcatbot (Raspberry caterpillar robot) forum thread:
https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=267999

Slowmo of raspcatbot passing, 100× slower than real, only 1.14m/s here:

https://stamm-wilbrandt.de/en/forum/90_fps_slowmo_video_of_Arduino_Due_caterpillar_robot_high_speed_overshooted_U_turn.gif
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Project asurano

200.8km/h between my fingertips (slowmo)

youtube    quarter speed / single step
(battery pack as safety anchor)
73g "robot"
96g Arduino uno robot
High speed Arduino uno robot
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Project asurano
High speed ATTiny85 robot
Arduecat (Arduino Due Caterpillar robot)
full stop back wheelies
• U-turn w/o speed (>2m/s) reduction
• just swap one motor's direction for some time
• slowed down by factor 90/25=3.6
90fps slowmo youtube video
• positions at start of (overshooted) U-turn, at 90°, 180° and finally before going straight again
Arduebot can do similar U-turn

ESP8266  esp8266/arduino

Standalone small outdoor #Wifi #access #point and #webserver based on #ESP8266-01 with #LiPo! [1] [2] [3] [4]

ESP8266-12 needs separate 3.3V power source, see here.

ESP8266-12 freshly soldered on adapter board, running Arduino IDE Blink example (pin 1 instead of 13).

6g in total version


single move mode   animation sct_map
Chess: construction tasks

DUV
I am a member of the German Ultramarathon Association (German-language) (my statistics)


For fun I registered as participant of South-German (Bavaria, Baden-Württemberg, Hesse and Saxony) 100km road race championship 1998 in Leipzig. There were 59 starters, 52 finishers, and I was 50th finisher (at age of 33). There were only 6 starters in male 30-34 age group, and only 3 of them were from South-Germany. One South-German starter did not finish -- therefore I got official silver medal from German Athletics Association(!), was "2nd best South-German 100km road race runner in age group 30-34 in 1998" … ;-)
[winner finished in 7:07h, I finished in 12:26h -- better than 8km/h on average]
UltRunR
Huge amount of information on Ultra-Marathons