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@Here-Be-Dragons
Here-Be-Dragons / fade.ino
Created December 28, 2016 02:37
Neopixel: Fade between two assigned colors
#include "application.h"
#include "neopixel/neopixel.h"
SYSTEM_MODE(AUTOMATIC);
// Define which pins are connected with a 1-10M resistor.
// The first pin will be connected to the touch sensor
// and must be D0, D1, D2, D3, D4 A0, A1, A3, A4, A5, A6, A7
// see: http://docs.spark.io/firmware/#interrupts-attachinterrupt
@sloria
sloria / bobp-python.md
Last active June 12, 2024 15:02
A "Best of the Best Practices" (BOBP) guide to developing in Python.

The Best of the Best Practices (BOBP) Guide for Python

A "Best of the Best Practices" (BOBP) guide to developing in Python.

In General

Values

  • "Build tools for others that you want to be built for you." - Kenneth Reitz
  • "Simplicity is alway better than functionality." - Pieter Hintjens
@davisford
davisford / setup-avahi.sh
Created July 12, 2013 14:14
Setup avahi-daemon on Ubuntu for so you can reach hostname `ubuntu.local` from host OS
sudo apt-get install avahi-daemon avahi-discover avahi-utils libnss-mdns mdns-scan
@jboner
jboner / latency.txt
Last active June 15, 2024 23:05
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD