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@veproza
veproza / AGPS.md
Last active Jun 1, 2021
Getting u-blox MAX-7C GPS to work with Assisted A-GPS
View AGPS.md

Getting u-blox MAX-7C GPS to work with Assisted A-GPS

So you got your u-blox GPS and wired it up only to look at it struggling to get a valid fix? Under less than ideal conditions, it can take a better part of half an hour. That's because unlike your smartphone GPS, it doesn't have the luxury of having downloaded all the auxiliary navigation data (almanacs and the lot) out-of-band, via fast mobile connection. Instead it relies on the satellite's signal itself, which is being transmitted to you at meager 50 bits per second (I'm not missing "kilo" there, it's three orders of magnitude slower than your 2G GPRS connection).

Luckily, the u-blox receivers are fitted with what the company calls "AssistNow" capability and it does exactly the same thing your iPhone does - feeds the GPS with pre-downloaded almanacs, speeding up the acquisition process to mere seconds.

In principle, the process looks easy enough - we just need to download the data, and then push them to the receiver. Sadly, the AssistNow documentat

@fpoussin
fpoussin / build.sh
Last active May 23, 2018
Build script for the Xtensa toolchain. (Mingw/linux)
View build.sh
#!/bin/bash
# Author: Fabien Poussin
# Last edit: 20/11/2014
#
# You will need the following mingw32/64 or equivalent linux packages to build it:
# msys gcc msys-coreutils msys-wget msys-autoconf msys-automake msys-mktemp
#
# Use mingw-get to install these.
# run this script from msys's or any unix console.
@jonathantneal
jonathantneal / README.md
Last active May 22, 2020
Local SSL websites on macOS Sierra
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Local SSL websites on macOS Sierra

These instructions will guide you through the process of setting up local, trusted websites on your own computer.

These instructions are intended to be used on macOS Sierra, but they have been known to work in El Capitan, Yosemite, Mavericks, and Mountain Lion.

NOTE: You may substitute the edit command for nano, vim, or whatever the editor of your choice is. Personally, I forward the edit command to Sublime Text:

alias edit="/Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl"
@lelandbatey
lelandbatey / whiteboardCleaner.md
Last active Jul 22, 2021
Whiteboard Picture Cleaner - Shell one-liner/script to clean up and beautify photos of whiteboards!
View whiteboardCleaner.md

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

@sgergely
sgergely / gist:3793166
Created Sep 27, 2012
Midnight Commander Keyboard Shortcuts for Mac OSX
View gist:3793166
----- Esc -----
Quick change directory: Esc + c
Quick change directory history: Esc + c and then Esc + h
Quick change directory previous entry: Esc + c and then Esc + p
Command line history: Esc + h
Command line previous command: Esc + p
View change: Esc + t (each time you do this shortcut a new directory view will appear)
Print current working directory in command line: Esc + a
Switch between background command line and MC: Ctrl + o
Search/Go to directory in active panel: Esc + s / Ctrl + s then start typing directory name