SharpCoder

pub fn get_color(&mut self, time: u64) -> Color {
    // Take the current time we are interested in (typically
    // system uptime in milliseconds) and modulus it by
    // the total time of our gradient so we end up with
    // a point between 0 and the total_time.
    let normalized_time = time % self.total_time;
    // The internal representation for this builder pattern
    // is a linked-list, so do some sanity checks.
    if self.root.is_none() {
        return self.color;

SharpCoder

This is how I wire up an ESP8266 and the power-on sequence I use to initialize the device.
It seems really hard to find such simple information, so here it is in this gist for all eternity.

------

VCC - 3.3v
GND - Gnd
RST - High
En  - High
Rx  - Tx

SharpCoder

#!/usr/bin/env bash

{ # this ensures the entire script is downloaded #

nvm_has() {
  type "$1" > /dev/null 2>&1
}

nvm_install_dir() {
  command printf %s "${NVM_DIR:-"$HOME/.nvm"}"

SharpCoder

Algorithm

There is surprisingly very little information about what the actual IARR algorithm is. IARR stands for Internal Average Relative Reflectance and the idea is that you extract the spectral information from the raw data by measuring the mean spectrum of the whole image. Every pixel vector is normalised by this global spectral mean to produce a 'relative reflectance' image. The psuedo-code for this algorithm is as follows:

for each band
   compute mean
for each pixel in a particular bad
   divide by the computed mean for this band

SharpCoder

#include "compass.h"

// COMPASS_MULTIPLIERS are calibrated per sensor and require an rigorous
// test environment. See README.md for more information.
int16_t COMPASS_MULTIPLIERS[360] = { 
  -213, -215, -213, -213, -213, -211, -208, -208, -204, -208, -206, -204, -204, -202, -200, -200, -200, -200, -202, -196, -196, -196, -196, -196, -196, -196, -192, -196, -192, -192, -192, -192, -192, -190, -189, -189, -189, -189, -189, -189, -189, -189, -189, -189, -187, -188, -185, -189, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -185, -189, -185, -185, -185, -185, -185, -185, -185, -185, -189, -189, -187, -189, -185, -189, -189, -189, -189, -189, -192, -189, -190, -190, -190, -192, -192, -192, -192, -192, -196, -192, -196, -196, -196, -196, -196, -196, -196, -196, -200, -200, -200, -196, -200, -200, -200, -201, -204, -204, -200, -204, -204, -204, -204, -204, -204, -208, -208, -208, -208, -213, -213, -208, -208, -208, -208, -213, -213

SharpCoder

use std::fs;
use std::path::Path;

pub trait Cache {
    fn write_file(&self, bucket: String, path: String, contents: String);
    fn write_json<Z : serde::ser::Serialize >(&self, bucket: String, path: String, model: Z);
    fn read_file(&self, bucket: String, path: String) -> Option<Vec<u8>>;
    fn read_json<Z : serde::de::DeserializeOwned>(&self, bucket: String, path: String) -> Option<Z>;
}

SharpCoder

# Install mtrack driver 0.5.0++
# Save this file to /usr/share/X11/xorg.conf.d/50-mtrack.conf
# This config is specialized for MacBook Air 2012 (5,2)
Section "InputClass"
        MatchIsTouchpad "on"
        Identifier      "Touchpads"
        MatchDevicePath "/dev/input/event*"
        Driver          "mtrack"
        # The faster you move, the more distance pointer will travel, using "polynomial" profile
        Option          "AccelerationProfile" "2"

SharpCoder

Contributing Guidelines

Hello! We're so glad you are interested in producing components for the extraordinarily in-demand PPE face shields which our local hospitals desperately need. To help facilitate this endeavor, we've created these guidelines to help make the process clear and simple.

What to make

Any and all components are currently in-demand. So feel free to make whichever one you are comfortable and setup to create. At this time, we are okay with accepting just shields, or just frames, or both.

3D Printed File

Once you're ready to go, feel free to start 3D printing or cutting the acrylic parts. We are standardizing on a single model, to help with the logistics of sourcing all the necessary components.

SharpCoder

include <openfusion.scad>
include <gears.scad>

//
bolt_bore = 6.2;
bearing_bore = 19.1 + 3.2;
limb_height = 6;


bearing_padding = 0;

SharpCoder

#include <Adafruit_NeoPixel.h>

// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1:
#define LED_PIN  7
 
// How many NeoPixels are attached to the Arduino?
#define LED_COUNT 2

// Declare our NeoPixel strip object: