ALTAIR 8800micro Build

9 Jul

ALTAIR 8800micro kit from Briel Computers


Setting up the Airspy R2

4 Jun

Add udev Rules
sudo vi /etc/udev/rules.d/99-airspy.rules

SUBSYSTEMS=="usb", ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="60a1", MODE:="0666"

sudo udevadm control --reload-rules

CMakeLists.txt for

30 May

If you want to compile outside of either the GR source tree or OOT module, this is the minimum required CMakeLists.txt (courtesy of Johnathan Corgan)

cmake_minimum_required(VERSION 2.6)
project(dialtone CXX)

find_package(Boost "1.35" COMPONENTS system)
find_package(Gnuradio "3.7.2" REQUIRED)


target_link_libraries(dialtone ${Boost_LIBRARIES} ${GNURADIO_ALL_LIBRARIES})

Setting up the Ettus USRP E310

29 Jun

Add udev Rules for E310 Serial Console
sudo vi /etc/udev/rules.d/99-usrp-e310.rules

SUBSYSTEMS=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6015", MODE:="0666"

sudo udevadm control --reload-rules

Serial Console Login
Plug in power and wait a few seconds for E310 to boot, then plug in microUSB.

dmesg to figure out the assigned serial port (i.e. /dev/ttyUSB4)

screen /dev/ttyUSB4 115200

Login as root

Setting Static IP
vi /etc/network/interfaces

# Wired or wireless interfaces
auto eth0
#iface eth0 inet dhcp
iface eth0 inet static
iface eth1 inet dhcp

/etc/init.d/networking stop
/etc/init.d/networking stop


21 Dec

Prior to installation of gqrx make sure QT5 is available by installing the following:

Pulse Audio
Prior to installation of gqrx make sure pulseaudio is available during build by installing the following:

Install gqrx
git clone
cd gqrx
mkdir build
cd build
qmake-qt5 ..
make -j8
sudo make install

Typical device strings
For the b200:

For the X310 with LFRX in slot 2:

For the X310 with WBX in slot 1:

For the N210 with LFRX:

When switching between devices in gqrx the gain control changes will segfault the application.  Fix this by deleting the “gains” section in:

Sending gqrx audio to fldigi
Install fldigi with yum

Configure fldigi sound card to use pulseaudio, leaving server string empty

Launch pulseaudio volume control, and under recording tab, fldigi capture from monitor of built-in audio analog stereo, and set level to 0 dB.

Adjust fldigi waterfall upper signal level and signal range.

Adding new systems to Hyperspin

28 Nov

This example will add Colecovision.

Edit this file:

E:\HyperSpin\Databases\Main Menu\Main Menu.xml

To add a system entry:

<game name="Colecovision"/>


Create a new ini file by copying an existing one (such as Atari 5200.ini):




E:\HyperSpin\HyperSync Cloud\HyperSync Loader.exe

Add ColecoVision, set all to Default, and sync database.




Select GLOBAL system and click Emulators tab.

Select MESS and change path to:


Click Settings tab and change 7z Enabled to True and Extract Path to:


Select Colecovision system and click Emulators tab.

Set Rom Paths to:

E:\HyperSpin\HyperSpin_Ready\Cart Systems\Coleco - ColecoVision

Set Default Emulator to MESS




and test a game to be sure it launches.

Setting up NI GPIB-USB-HS under Linux

26 Jul

Mostly stolen from:

Note unlike the ni_usb_b, this is the ni_usb_hs so no firmware has to be loaded at boot, thus gpib_config can be called directly.

Get latest source code

Typical build in /usr/local/src with
sudo make install

Edit configuration
sudo vi /etc/gpib.conf

board_type = "ni_usb_b"
name = "gpib0"

Add udev rules
sudo vi /etc/udev/rules.d/99-linux_gpib_ni_usb.rules

SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="3923", ATTR{idProduct}=="709b", MODE="660", GROUP="username", SYMLINK+="usb_gpib"
SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="3923", ATTR{idProduct}=="709b", RUN+="/usr/local/sbin/gpib_config"
KERNEL=="gpib[0-9]*", ACTION=="add", MODE="660", GROUP="username"

sudo udevadm control –reload-rules

Note udev will not run the gpib_config at boot, so add it in rc.local
sudo vi /etc/rc.d/rc.local

exit 0

sudo chmod +x /etc/rc.d/rc.local
sudo systemctl enable rc-local.service
systemctl status rc-local.service

Now plug in the adapter and run ibtest
Reboot and run ibtest

Linux Multimedia

19 Jul

Logitech C615 HD Webcam
sudo vi /etc/udev/rules.d/99-webcam.rules

SUBSYSTEMS=="usb", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="082c", MODE:="0666"

sudo udevadm control --reload-rules

Dell XPS 13 Webcam
sudo vi /etc/udev/rules.d/99-webcam.rules

SUBSYSTEMS=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="5752", MODE:="0666"

sudo udevadm control --reload-rules

RPM Fusion Repository
sudo yum localinstall --nogpgcheck$(rpm -E %fedora).noarch.rpm$(rpm -E %fedora).noarch.rpm

GUVCView Webcam Recording
sudo yum install libwebcam guvcview

Change resolution to 1280×720 on XPS-13

Set sound device to hw:2,0 for Logitech webcam

Screen Recording
sudo yum install gtk-recordmydesktop

Set sound device to DEFAULT for Logitech webcam

May also need to use hw:0,0 (use arecord -l to list input devices)

Video Editing
sudo yum install openshot

Video Playback
sudo yum install vlc

Setting up the Ettus USRP B200

10 Jun

Using a Syba SD-PEX20122 (VLI VL80x chipset) PCIE USB 3.0 controller and 1 meter cable

Add udev Rules
sudo vi /etc/udev/rules.d/99-usrp-b200.rules

SUBSYSTEMS=="usb", ATTRS{idVendor}=="2500", ATTRS{idProduct}=="0020", MODE:="0666"

sudo udevadm control --reload-rules

Realtime Priority
sudo vi /etc/security/limits.conf

# Add for USRP realtime priority
myusername – rtprio 99

Will require re-login

Update Firmware
sudo /usr/local/lib64/uhd/utils/

uhd_find_devices --args="type=b200"

cd /usr/local/lib64/uhd/examples
./benchmark_rate --rx_rate 45E6 --args "type=b200, master_clock_rate=45E6"

Baudline Tips

20 Apr

Install extra Fedora fonts
sudo yum install xorg-x11-fonts-misc
sudo yum install xorg-x11-fonts-ISO8859-1-75dpi

Reading data file from GNU Radio
GNU Radio file sink with input type complex writes IEEE 754 single-precision floats:
f = scipy.fromfile(open("filename"), dtype=scipy.complex64)

Baudline file raw parameters
Decompression: OFF
Initial byte offset: 0
Sample Rate: custom
Channels: 2
Quadrature: ON
Flip Complex: ON
Decode Format: 32 bit float, little endian
Normalization: 1 maximum sample value