tomasinouk

# You will need to probably create ~/.ssh/config file or edit, and add the following lines:

# Host [IP Address]
# StrictHostKeyChecking no
# UserKnownHostsFile=/dev/null

# A example for whole 192.168.0.0/16 IP subnet:

Host 192.168.*.*
StrictHostKeyChecking no

tomasinouk

// --------------------------------------
// i2c_scanner
//
// Version 1
//    This program (or code that looks like it)
//    can be found in many places.
//    For example on the Arduino.cc forum.
//    The original author is not know.
// Version 2, Juni 2012, Using Arduino 1.0.1
//     Adapted to be as simple as possible by Arduino.cc user Krodal

tomasinouk

Some examples of SNAT, DNAT with iptables with comments

mainly used in start-up script

How to test 'safely'

When we play with iptables aka firewall we might end up in situation, where we execute rule, which has unforseen impact - lock yourself out. Recovering from this situation is necessity.

How to:

• Enable reboot via SMS.
• Test all commands in shell first before putting them into Start-up script. This way the command will be wiped out, when unit is rebooted.

masquarade all outgoing packets to be WLAN0 IP

tomasinouk

# logrotate and pm2 logs
# file location
# /etc/logrotate.d/pm2

/root/.pm2/logs/*.log {
  daily
  rotate 15
  missingok
  notifempty
  sharedscripts

tomasinouk

-- control 2 first neopixels via RGB
--ws2812.writergb(2, string.char(100,255,0,255,0,0))

-- control 8 neopixels with same RGB color 
-- ws2812.writergb(2, string.char(100,255,0):rep(8))
-- -- control 8 neopixels with same RGB color - turn off
 ws2812.writergb(2, string.char(0,0,0):rep(8))

tomasinouk

id=0
-- represent actually PIN on nodeMCU such as 
-- D7 and D5 in this case
-- GND needs to be connected
sda=7   -- GPIO13
scl=5   -- GPIO14

    -- initialize i2c, set pin1 as sda, set pin2 as scl
    i2c.setup(id,sda,scl,i2c.SLOW)

tomasinouk

# run that in start-up script
# echo "Time UTC (GPS);Latitude;Longtitude;Altitude;Satellites;Fix;Speed over ground;Course over Ground;Date (GPS);Date (router);Time (Router)" > location_report.csv

import csv
import time
import datetime
import os.path
import os

csv_header_text = "Time UTC (GPS);Latitude;Longtitude;Altitude;Satellites;Fix;Speed over ground;Course over Ground;Date (GPS);Date (router);Time (Router); Cell Technology;Cell ID;Signal Strength;Signal Quality\n"

tomasinouk

Speed of SHDSL(1):

IF-MIB::ifSpeed.4096 = Gauge32: 15288000

• OID: snmptranslate -On IF-MIB::ifSpeed.4096 -> .1.3.6.1.2.1.2.2.1.5.4096

SHDSL IN:

IF-MIB::ifInOctets.4096 = Counter32: 10923350

• OID snmptranslate -On IF-MIB::ifInOctets.4096 -> .1.3.6.1.2.1.2.2.1.10.4096

tomasinouk

ffmpeg -f avfoundation -i "1" -vcodec libx264 -r 10 -tune zerolatency -b:v 500k -bufsize 300k -f rtp rtp://localhost:1234

ffmpeg -f avfoundation -i "1" -vcodec libx264 -r 10 -tune zerolatency -b:v 500k -bufsize 300k -f rtp udp://127.0.0.1:1234

ffmpeg -f avfoundation -i "1" -vcodec libx264 -r 10 -tune zerolatency -b:v 500k -bufsize 300k -f mpegts udp://127.0.0.1:1234

ffmpeg -f avfoundation -i "1" -vcodec libx264 -r 10 -pix_fmt uyvy422 -tune zerolatency -b:v 500k -bufsize 300k -f mpegts udp://192.168.88.38:1234

tomasinouk

Solution to disable and enable radio interfaces on Conel, SmartWorkx routers based on time.

Solution is to change the setting of the router enable/disable and reboot the router for the setting to be used by router.

I used two time constants:

• On timer - TIME_ON
• Off timer - TIME_OFF

Script to copy paste into Configuration -> Start-up Script setting of the Conel router.