greghgradwell

2. Code for any Mode

From the start, this autopilot was designed to use multiple nodes operating on a local network. And with that premise in mind, I introduce you to Segal's law (not to be confused with Steven Seagal's Above the Law).

₁

"A person with a watch knows what time is it. A person with two watches is never sure."

And here lies perhaps the biggest issue when it comes to multiple devices working together:

If two devices disagree, how do you know which one is right?

I'm sure there's a lot of really clever answers to this, but the nature of Elixir allows for an answer that is simple. And I like simple.

If a device is alive, assume it's right.

greghgradwell

3. Commands on Demand

Welcome back! Unless you never left, in which case, maybe it's time for a snack?? Previously we were discussing the notion of taking two sources of hardware output and somehow rectifying them into a single software input. I used the example of two IMUs, but I'm going to retract that one for now, because I haven't actually duplicated sensors on the vehicle yet. Rather, let's talk about using multiple sources of vehicle commands, since I've at least got that much working. But 2021 is the year of redundant sensors! (or should I call them oxiliary?)

Pesky front seat drivers...¹

Two is one

I've never tested an autonomous system that lacked the option for a human operator to assume manual control. I know there are aircraft out there where the pilot is l

fideloper

#!/usr/bin/env bash

###
# A CMD or ENTRYPOINT script for a Dockerfile to use to start a Nginx/PHP-FPM
#
# For more details, see 🐳 https://shippingdocker.com
##

if [ ! "production" == "$APP_ENV" ] && [ ! "prod" == "$APP_ENV" ]; then
    # Enable xdebug

gdamjan

'''
Go to https://code.google.com/apis/console/ and:
- create a new project, 
- enable access to the calendar api, 
- create a "service account" - that will give you an:
  * "email address" which is the service_account_name and
  * a private key that you need to save on you server
- go to the calendar and share it with the "email address" from above

Make sure your time is synchronized.

eugenehp

var express = require('express');
var cp = require('child_process');

var app = express.createServer();

var chrome_count = 0;

app.get('/', function(req, res){
    startChrome(chrome_count++,9222,function chromeStared(err,id,chrome){
    	res.send('Chrome '+id+' Started\r\n');

mprymek

# This is an example of metaprogramming in the Elixir language.
# 
# We will define a domain specific language (DSL) for the definition
# of a service which is watched by several sensors.
# Each sensor watches some property/functionality of the service and
# returns the result of the check.
# 
# To determine if the service is functioning properly, we need functions
# to run all the sensors' code and gather the returned data.
# 

chrisbodhi

Deep Work

Rules for Focused Success in a Distracted World

Cal Newport, 2016 [purchase it at half-price books]

Part I: The Idea

• Deep Work is valuable
• Deep Work is rare
• Deep Work is meaningful

amacgregor

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ryaan-anthony

delimiter ;;
    drop procedure if exists build_catalog;;
    create procedure build_catalog(IN categories INT, IN products INT)
    begin
        SET @category_count = 1;
        SET @CATNAMEPREFIX = "Category ";
        SET @CATURLKEYPREFIX = "cat-";
        SET @CATURLPATHPREFIX = "catpath-";
        SET @ROOTCATEGORY = 2;
        SET @INCLUDEINMENU = 1;

yefim

{
  "AWSEBDockerrunVersion": "1",
  "Image": {
    "Name": "<AWS_ACCOUNT_ID>.dkr.ecr.us-east-1.amazonaws.com/<NAME>:<TAG>",
    "Update": "true"
  },
  "Ports": [
    {
      "ContainerPort": "443"
    }