okalachev

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""MAVLink Monitor
Monitor MAVLink packages from a serial port, UDP, or TCP link.
Usage:
  mavlink_monitor.py [--dialect=<dialect>] [-b] <url>
  mavlink_monitor.py (-h | --help)
Options:
  --dialect=<dialect>  MAVLink dialect [default: common]

okalachev

import requests

r = requests.get('http://192.168.11.136:5000', params={'foo': 123})

print(r.text)

okalachev

#!/usr/bin/env python3

# Fetch all GitHub repo stargazers
# Usage: REPO=<username>/<repo> ./stars.py
# Results are saved in JSON and TXT format into ./<username>-<repo>/ directory (by timestamp)

import os, os.path
from datetime import datetime
import requests
import json

okalachev

TAG=<tag_name> && git tag -d $TAG && git push --delete origin $TAG

okalachev

Show high CPU usage process

The plugin for xbar, thath detects a high CPU consuming process (>50% CPU by default) and shows it in the top menu bar. If there is no high CPU usage the plugin stays quiet.

okalachev

#!/usr/bin/env bash

# Usage: copy <filename>

SSH=($SSH_CONNECTION)
echo scp $1 $(whoami)@${SSH[2]}:$(pwd)

okalachev

Device Tree overlay to run OV7251 camera on CAM0 port of Compute Module 4

This will work on Raspberry Pi OS 2021-01-12 (related DT files were changed in later release).

Copy the binary device tree overlay file to /boot/overlays/:

sudo cp ov7251cam0.dtbo /boot/overlays/ov7251cam0.dtbo

okalachev

# Running: PYTHONUNBUFFERED=1 python temp_plot.py | tee temp.csv

import time
import subprocess

print('uptime,temperature,throttling')
while True:
    uptime = float(open('/proc/uptime', 'r').readline().split()[0]) / 60
    temp = float(open('/sys/class/thermal/thermal_zone0/temp').read()) / 1000
    throttled = subprocess.check_output(['vcgencmd', 'get_throttled'])

okalachev

import rospy
from collections import deque
from threading import Event, Thread


def subscribe_deque(name, data_class, callback=None, callback_args=(),
                 queue_size=1, **kwargs):

    def cb(msg):
        queue.append(msg)

okalachev

#include <iostream>
#include <string>

using namespace std;

struct Node
{
public:
    // Answer constructor
    Node(string answer) :