JamesHagerman

3.5 Inch TFT Touch Screen, Quimat 320x480 Resolution LCD

I got this screen on Amazon here: https://www.amazon.com/Quimat-320x480-Resolution-Display-Raspberry/dp/B06X191RX7/

These are the changes I had to make on a fresh Kali 2019.2a install on a raspberry pi 3:

It's an SPI screen which means it is rather slow to update. But it's good enough.

Getting the screen working

JamesHagerman

Using Autodesk Eagle without a three button mouse

By default, panning the view in Eagle is painful on computers with touchpads, trackpads, thinkpad nubs, or whatever their called on Apple laptops.

The following command can enable the Ctrl (or Cmd on an Apple) key as an alternative way of panning the view. Just hold the key and move the mouse around (without clicking any mouse button).

This is very useful, difficult to remember, difficult to Google, and difficult to save in a "dotfile" configuration file. At least it sticks between runs of Eagle...

SET Interface.UseCtrlForPanning 1

JamesHagerman

Adding Reference Sections or Footnotes in GitHub Markdown

GitHub Markdown doesn't really support reference links and footnotes. This makes creating reasonable References sections a bit more complicated.

Note: I'm no editor. Place grain of salt here: .

A link to [Some BBC article (actually just google)][1].

Another link to a book on Testing with RSpec that tries to replicate the formatting of Wikipedia.^[2]

JamesHagerman

srsLTE notes

These are notes I've taken while rying to get srslte up and running. This is messy, sorry...

Working solution - LimeSDR + SoapySDR + srsLTE

Dependencies:

sudo apt install tree vim git g++ make cmake pkg-config libpython-dev python-numpy swig libi2c-dev libusb-1.0-0-dev libfftw3-dev libmbedtls-dev libboost-program-options-dev libconfig++-dev libsctp-dev gnuradio

JamesHagerman

Keybase proof

I hereby claim:

• I am jameshagerman on github.
• I am jhagerman (https://keybase.io/jhagerman) on keybase.
• I have a public key ASARFYz-Cj8HbLghrTj45FCqIG4AkLCNW1REPG_1WAhXmwo

To claim this, I am signing this object:

JamesHagerman

/* Pass through all data from USB serial to UART serial (TX/RX pins)
 */
SYSTEM_THREAD(ENABLED);
SYSTEM_MODE(MANUAL);

void setup() {
  Serial1.begin(9600);
  Serial.begin();
}

JamesHagerman

atreas layout notes

I am trying to figure out how to layout this friggin atreus keyboard in a way that is more in line with my brain.

That means trying to figure out how to use it for most of my work instead of just being a distraction.

So. I know I just need to type on it more to learn it better because of the ortho layout but it's also a drag because I can not figure out the right way to handle all of the stupid things one normally does with a keyboard.

My other keyboard has plenty of extra function keys specifically so it is easier for me to access all the silly extra functions. But on that desk, the list is rather short. It's mostly just about the arrow keys, page up/down, and having enough space for the silly backspace and whatever keys.

JamesHagerman

RetroPiePy Notes

Adding a GUI entry for your own scripts. I followed these directions: https://retropie.org.uk/docs/Add-a-New-System-in-EmulationStation/

Useful tools:

sudo apt-get install python-pip
pip install pysdl2

JamesHagerman

#   Author: Andrew Fisher
#   Version: 0.1
#   Date: 30/05/2012
#   Licence: BSD

#   This python converts an rgb value expressed in 8 bit values (eg 255, 128, 0) and returns a hex value that
#   has been converted to 565 format. This was highly useful when I was playing with some Arduino
#   stuff requiring 16 bit LCD designs and couldn't remember the hex layout. 

def rgb_hex565(red, green, blue):

JamesHagerman

GDB and GEF notes

I should be using radare2 instead... but I'm on ARM and don't really want to install radare2

TODO: Install radare2! :D

Args and launching

Just run: