bloc97

Two Fast Methods of Generating True Random Numbers on the Arduino

Arduino true random number generator

B. Peng

December 2017

Abstract

The AVR series microcontrollers are a collection of cheap and versatile chips that are used in many applications ranging from hobbist projects to commercial infrastructure. One major problem for some hobbists is the lack of secure random number generation on the Arduino platform. The included pseudo-random number generator (PRNG) is very easy to defeat and is useless for any crypto-related uses. One recommendation from the Arduino Reference Manual is to use atmospheric noise from the chip's analog sensor pins as seed data^[6].
Unfortunately this method is extremely weak and should not be used to emulate a true random number generator (TRNG). Existing methods such as using the internal timer drift or using a dedicated generator are either too slow, requires extensive external hardware or modifications to the microcontroller's internal mech

rumblesan

Hip Hop and Code Handout

Gibber

http://gibber.cc/

Docs

Gibber uses javascript.

jarmitage

// livecodingyoutube.github.io
// iclc.livecodenetwork.org/2017/

// search("andrew sorensen")// click a video
// search("koyaanisqatsi part 7")
// search("inception building")
// search("godzilla original")

// note: shift+enter to run, highlight blocks to run multiple lines at once

itod

• Kinesis Freestyle (Terrible key switches. Mushy and un-lovable)

• Kinesis Freestyle Edge (Traditional layout with too many keys, mech switches, proably too big to be tented easily/properly)

• Matias Ergo Pro (Looks pretty great. Have not tried.)

• ErgoDox Kit (Currently, my everyday keyboard. Can buy pre-assembled on eBay.)

• ErgoDox EZ (Prolly the best option for most people.)

mattdesl

This isn't bullet-proof but here's how I've doing things lately:

modular ThreeJS quickie

• npm install three --save
• Include this in your browserify/webpack root script, typically your index.js:

global.THREE = require('three')

• Add the "THREE" global to your linter (e.g. semistandard/eslintrc)

jarmitage

https://github.com/yaxu/deadpatterns

https://github.com/yaxu/embedded

https://github.com/kindohm/365tidalpatterns

https://github.com/kindohm/expedition

https://github.com/kindohm/live-2016

gbaman

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

glen-cheney

Encoding Video

Installing

Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.

brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aac --with-opus

KeyMaster-

//To be used on shadertoy.com
//Uses the image at iChannel0 and warps it into polar coordinates
void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
    vec2 relativePos = fragCoord.xy - (iResolution.xy / 2.0);
    vec2 polar;
    polar.y = sqrt(relativePos.x * relativePos.x + relativePos.y * relativePos.y);
    polar.y /= iResolution.x / 2.0;
    polar.y = 1.0 - polar.y;

jhorology

#!/bin/sh
# Decompile Ableton Live MIDI Remote Script.
# https://github.com/Mysterie/uncompyle2
#
IFS=$'\n'
MIDI_REMOTE_SCRIPTS='/Applications/Ableton Live 9 Suite.app/Contents/App-Resources/MIDI Remote Scripts'

cd `dirname $0`

for file in $(find ${MIDI_REMOTE_SCRIPTS} -type f)