OmIkRoNiXz`s notes

Sunday, November 24, 2013

GLB's Micro ARF Quadcopter MWC overview

Micro Quadcopter with MultiWii firmware - $54.10 from goodluckbuy.com.
Spare parts 4pcs Landing Skid Set - $4.23 and 350mah Li-Batteryh - $5.74
This kit requires some soldering and own RX and TX. I used for TX Turnigy 9xR with Frsky DJT - $51.85 radio from combo pack bought from HK, and for TX FrSky V8R4-II - $13.62 nice tiny 4 channel receiver with wide range of operating voltage 3.0~16.0V.

After soldering was done, first problem a stumbled on was that MultiWii GUI wasn't able to connect via serial port. Though solution was pretty simple. I compiled new firmware which comes with MultiWii GUI in MultiWii folder with Arduino IDE. It can be programmed with the same IDE too. I used USBasp programmer (some cheap sort of this programmer for using with avrdude and etc can be fixed using this article).

Before writing new firmware you must configure MultiWii config.h file, i found good thread on rcgroups forum about this micro quadcopter. My uncommented/changed lines (didn't test much just wanted to try, you can read a thread about this parameters on rcgroups):


#define QUADX

#define MINTHROTTLE 1000
#define MAXTHROTTLE 2000

#define DESQUARED6DOFV4
#define MPU6050

//#define I2C_SPEED 100000L
#define I2C_SPEED 400000L

#define INTERNAL_I2C_PULLUPS
#define EXT_MOTOR_RANGE
#define MOTOR_STOP

Cons in my kit motors wires were too short and i needed to extend they.
FrSky RX connected:

RX ch (signal pin)     QuadCopter
       1               roll / ail
       2               pitch / ele
       3               throttle
       4               yaw

    1 ch VCC           V+ pin
    1 ch GND           GND pin

Monday, October 28, 2013

"Click and Grow" teardown

Refill cartridge EEPROM IC ST 24C01WP, mainboard ICs LPC1111F and MV934I

Tuesday, October 8, 2013

Mikrotik mangle Sniff TZSP, trafr, tcpdump on Wheezy


Mikrotik router:
[admin@MikroTik] > ip firewall mangle print detail
Flags: X - disabled, I - invalid, D - dynamic 
 0   ;;; 91.217.189.21/portlane.se.quakenet.org irc traffic sniffing test
     chain=prerouting action=sniff-tzsp sniff-target=192.168.199.20 sniff-target-port=37008 protocol=tcp src-address=192.168.199.0/24 dst-port=6667


Wheezy (sniff target):
cmd>root# apt-get update && apt-get install tcpdump

cmd>user# wget http://www.mikrotik.com/download/trafr.tgz
cmd>user# tar -zxvf trafr.tgz
cmd>user# ./trafr -s | /usr/sbin/tcpdump -A -r - -n

Friday, June 21, 2013

Upgrading ESXi 5.0 to 5.1 U1 via IP KVM (screenshot version)

Upgrading ESXi from 5.0 to 5.1 U1 on SR1690WBR Server System via Aten CN8000 IP KVM

PSOD was the only problem that required physical access to server or access to control power, for doing reset. The problem occured because CPU feature "No-Execute Memory Protection" was disabled instead of enabled. After restart it was very easy to do upgrade.

Debian DVB-T AverMedia A867 + astra streaming


cmd>root# wget "http://www.avermedia.com/Support/DownloadCount.aspx?FDFId=5653"
cmd>root# mv DownloadCount.aspx\?FDFId\=5653 a867.tar.bz2
cmd>root# tar -xjf a867.tar.bz2

cmd>root# apt-get install linux-headers-`uname -r` linux-source
cmd>root# wget "https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.2.45.tar.xz"
cmd>root# tar -xf linux-3.2.45.tar.xz
cmd>root# cd linux-3.2.45/drivers/media/
cmd>root# mkdir -p /lib/modules/3.2.0-4-amd64/source/drivers/media/
cmd>root# cp -r dvb/ /lib/modules/3.2.0-4-amd64/source/drivers/media/

cmd>root# cd && cd a867*
cmd>root# make
cmd>root# make install
cmd>root# modprobe dvb-core
cmd>root# modprobe dvb-pll
cmd>root# modprobe dvb-usb
cmd>root# insmod ./a867.ko debug=255

cmd>root# apt-get install dvb-apps w-scan screen
cmd>user# w_scan -ft -c EE -X >> channels.conf

ETV(Levira):530000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:550:730:1
Kanal 2(Levira):530000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:562:810:41
TV3(Levira):530000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:566:826:43
ETV2(Levira):530000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:561:806:2
Tallinna TV(Levira):530000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:501:601:39
Kanal12(Levira):530000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:502:605:38
France 24(Levira):602000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_1_2:FEC_NONE:QPSK:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:3794:5376:494

cmd>user# wget http://cesbo.com/download/astra-stable.tar.gz
cmd>user# tar -zxvf astra-stable.tar.gz
cmd>user# cd cesbo*
cmd>user# ./configure.sh
cmd>user# make
cmd>user# make install

cmd>user# nano stream.lua

#!/usr/bin/astra

log.set({ debug = true, stdout = true, syslog = "dvb-t" })
require("base")
require("output_http")

#!/usr/bin/astra

log.set({ debug = true, stdout = true, syslog = "dvb-t" })
require("base")
require("output_http")

make_stream({
    demux = true,
    dvb = {
      type = "T",
      modulation = "QAM16",
      guardinterval = "1/4",
      adapter = 0,
      device = 0,
      bandwidth = "8mhz",
      frequency = 530
    }
  }
,{
  {
    fec = "2/3",
    name = "ETV(Levira)",
    pnr = 1,
    output = { "http://10.225.14.15:8000/dvb/ch1" }
  },
  {
    fec = "2/3",
    name = "Kanal 2(Levira)",
    pnr = 41,
    output = { "http://10.225.14.15:8000/dvb/ch2" }
  },
  {
    fec = "2/3",
    name = "TV3(Levira)",
    pnr = 43,
    output = { "http://10.225.14.15:8000/dvb/ch3" }
  },
  {
    fec = "2/3",
    name = "ETV2(Levira)",
    pnr = 2,
    output = { "http://10.225.14.15:8000/dvb/ch4" }
  },
  {
    fec = "2/3",
    name = "Tallinna TV(Levira)",
    pnr = 39,
    output = { "http://10.225.14.15:8000/dvb/ch5" }
  },
  {
    fec = "2/3",
    name = "Kanal12(Levira)",
    pnr = 38,
    output = { "http://10.225.14.15:8000/dvb/ch6" }
  },
})

Wednesday, May 22, 2013

Ports extracting on old freebsd (7.2 my), xz inappropriate file type or format

Before starting compiling libarchive, i put spawn.h to /usr/include, because in my system it doesn't existed.


CC     libarchive/filter_fork_posix.lo
libarchive/filter_fork_posix.c:61:21: error: spawn.h: No such file or directory
*** Error code 1

Stop in /usr/ports/archivers/libarchive/work/libarchive-3.1.2.
*** Error code 1

# cd /usr/include/
# wget https://gist.github.com/OmIkRoNiXz/5625492/raw/71b8edba74636f513a0e301a2da12caa2d68f417/spawn.h

Now i can install libarchive.


# cd /usr/ports/archivers/libarchive 
# make install clean

# ln -sf /usr/local/bin/bsdtar /usr/bin/tar

And it all!

Thursday, February 21, 2013

Mikrotik RB493G + Unifi AP, public and guest network

1. Go to Unifi Controller Web page, sign in.
2. Open settings => Wireless Networks => Create

3. Select Security: Open, tick Guest Policy checkbox,
tick Use VLAN ID and for example put 200 for VLAN ID, click Create
4. Now open WinBox for Mikrotik setup

for my simple setup i've created bridge bridge1 for LAN, with this parameters:


 0  R name="bridge1" mtu=1500 l2mtu=1520 arp=enabled 
      mac-address=00:0C:42:A7:68:EC protocol-mode=none priority=0x8000 
      auto-mac=yes admin-mac=00:00:00:00:00:00 max-message-age=20s 
      forward-delay=15s transmit-hold-count=6 ageing-time=5m