Perturb - perturb.org - Perturb.org - Scott's Geek Stuff
General Information:
Latest News:
Adding ctag support for BrightScript 10 Aug 2013 | 02:11 am
I was editing some BrightScript (Roku) code and I wanted ctag support for Vim. Here is the quick function definition that I found for my ~/.ctag file.
Disable tmpfs on /tmp in Fedora 6 Aug 2013 | 08:11 pm
Starting in Fedora 18, Fedora uses tmpfs for /tmp storage. I prefer my /tmp to be stored on disk, and be larger than the default tmpfs size. To disable this run: And then unmount /tmp, or reboot.
Raw dump of serial data 31 Jul 2013 | 08:12 pm
I needed to debug the raw bytes coming across my serial port from my Arduino. I wrote a simple Perl script to dump the data: serial_debug.pl.
Using NMAP as a port knocker 17 Jul 2013 | 01:23 am
I want to send packets to a specific UDP or TCP port on another box to test firewalls rules. Using nmap you can send packets to specific ports as follows This will send a UDP packet to ports 3130 and...
Firefox: Show the whole URL instead of the trimmed version 26 Jun 2013 | 09:04 pm
To make Firefox show the whole URL, including the http:// go in to the config editor Then search for and set it to false.
Arduino: Serial Chargen 6 Jun 2013 | 12:40 am
I wanted to test serial on my BeagleBone Black, so I need a source that would spit out a bunch of serial data. I wrote up a quick serial chargen script for Arduino. Now I have an endless source of ser...
BeagleBone Black: Barrel Connector Polarity 5 Jun 2013 | 01:18 am
The BeagleBone Black has a barrel connector to power the board if you don't want to use USB. Power input should be 5v, anything higher will fry your board. It's not documented very well, but the pola...
BeagleBone Black: GPIO Pinout 3 Jun 2013 | 09:13 am
The BeagleBone Black has a lot of pins, and a lot of features. Of interest to me are the 65 user controllable GPIO pins, 8 PWM pins, 4.5 serial ports, and 7 analog pins.
BeagleBone Black: USR Leds 3 Jun 2013 | 08:59 am
The BeagleBone Black includes four user controllable LEDs: USR0 through USR3. They can be controlled by going to: In that directory are four directories, one for each LED. If you want to see what eve...
BeagleBone Black: Serial Login 3 Jun 2013 | 08:43 am
You can view the BeagleBone Black boot process, and login via a serial connection (with a TTL adapter) by connecting to the serial debug header. The pinout is as follows: J1 = Ground J2 = Not connec...
