speters

UserScripts

speters

PlatformIO install on CodeAnywhere

For the Xenial distribution, there are some fixes needed, as PlatformIOs urllib3 depends on newer SSL libs.

So just get an older urllib3 implementation via PIP and copy over to PlatformIO.

Container

set up a Python container first

speters

Block sinks in sea water

You:

a block with length 0.35m, width 0.25m, height 0.35m weighs 12kg. How deep does it sink in sea water?

ChatGPT:

To determine how deep the block sinks in sea water, we need to consider the buoyant force acting on the block and compare it to the weight of the block.

The buoyant force is equal to the weight of the water displaced by the block. In this case, the block is submerged in sea water, which has a density of approximately 1,025 kg/m³.

speters

"""
Written by GPT3 from this English prompt (with one tweak to the prompt, to get 
the timestamp parameter to not error out, and PEP8 fixes):

----

1. Open a sqlite database with a name like `2022-07-17 17.48.19.db` or
    `2021-04-11 08.44.16.db`
2. Inside is a table called `locations`, with headers [LOCTYPE INTEGER,
    TIMESTAMP BIGINT, LATITUDE REAL, LONGITUDE REAL,ALTITUDE REAL, ACCURACY

speters

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ipc.h>
#include <sys/types.h>
#include <sys/stat.h>

void touch(char *file_name) {
    FILE *fp;
    if ((fp = fopen(file_name, "w")) == NULL) {

speters

 candump -t A can0 | sed -e 's/ (.* \(.*\)\.\(...\).*) *can. *\([0-9A-F]*\) *\[.*\]  */\1.\2 R \3 /g'  -e 's/[\r\n]*$/\r/' | nc  -l  -p 1457 2>&1 |  sed -u -n -e 's/^\([^ ]*\) /\1#/g;s/ //g;s/\r//g;/^$/!p;'  | while IFS="" read CMD ; do cansend can0 $CMD ; done

speters

/*

    NASAClipper_I2C_to_NMEA v0.5.2
    Decode the NASA Clipper Data into a NMEA compatible serial string
    
    
    written by Peter Holtermann
    with additions from Victor Klein

    

speters

Ais SOTDMA Transceiver B600 pinout

In einer Abbildung im Manual kann man auf der Buchse ein "LTW" lesen, also AmphenolLTW als Hersteller. Das Kabel könnte dann ABU-12BFFM-LL7A__ sein.

Mit den Platinenbildern der FCC Anmeldung kann man nachvollziehen, an welche Pins die NMEA-Datenleitungspaare gehen. Ausserdem kann man die Leitungen der "silent" Pins in Richtung eines ICs sehen, der ein Optokoppler sein könnte, was zur Funktion passen würde.

Die Litzenfarben des Amphenol-Pigtails entsprechen denen aus dem Handbuch des AIS Senders.

speters

#!/usr/bin/env python3

import tr064
import argparse
import configparser
from os import path
from socket import gethostbyname_ex
from time import sleep

args = {}

speters

#!/bin/sh
# git-search-exe.sh
#   20210523 by Soenke J. Peters @ opcenter.de
#
# search for files with symbols (not stripped) or containing debug_info in a git repository
# as there are sometimes interesting leftovers which are a good start for RE

DIR=$1
CWD=$(pwd)