bunsenmcdubbs

root@beaglebone:~# i2cdetect -y -r 1
  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- UU UU UU UU -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- -- 

bunsenmcdubbs

from Adafruit_I2C import Adafruit_I2C
from time import sleep

# initialize i2c connection to MPU6050
# i2c address is 0x68
i2c = Adafruit_I2C(0x68)

# wake up the device (out of sleep mode)
# bit 6 on register 0x6B set to 0
i2c.write8(0x6B, 0)

bunsenmcdubbs

#!/bin/bash

# run this on the computer first
ifconfig eth1 192.168.7.1
iptables --table nat --append POSTROUTING --out-interface wlan0 -j MASQUERADE
iptables --append FORWARD --in-interface eth1 -j ACCEPT
echo 1 > /proc/sys/net/ipv4/ip_forward

bunsenmcdubbs

Attendee Create Order

1. Attendee navigates to event page
2. TODO System checks for and removed expired ticket reservations
3. System shows event view with available tickets
4. Attendee selects ticket(s) from page
5. System warns/prevents selecting unavailable tickets
6. Attendee starts checkout process
7. TODO System marks selected tickets as reserved
8. System shows ticket information screen (collect attendee info)

bunsenmcdubbs

type UserID int64

func export(customerID string) map[UserID]UserID {
    graph := fetchGraph(customerID)
    for src, _ := range graph {
        find(graph, src) // Since this function mutates the graph, we don't need to store the results separately
    }
    return graph
}

bunsenmcdubbs

Introduction

This quick guide will spin up a Postgres 12 container accessible from localhost:9432. This is NOT a durable setup and data is very likely to be lost after the database is shutdown. For demo purposes only.

Prerequisites

• Docker

Instructions

In one shell, run

$ docker run -e POSTGRES_PASSWORD=postgres --publish 9432:5432 --name demo-pg12 postgres:12

bunsenmcdubbs

Installing:

• HBase 2.3.4 (current stable version)

On

• MacOS 10.14
• Homebrew is available
• Java 8 and 11 installed (either system Java and/or installed via homebrew... not sure...)

Generally following instructions from https://hbase.apache.org/book.html#quickstart. Interesting notes and specific suggestions:

• seems like Java 8 is preferred. 11 is ok as well. https://hbase.apache.org/book.html#java

bunsenmcdubbs

Keybase proof

I hereby claim:

• I am bunsenmcdubbs on github.
• I am bunsenmcdubbs (https://keybase.io/bunsenmcdubbs) on keybase.
• I have a public key ASBuF5mjsIcs5BgT00dQ9in8WR5Ip2z4EZq_tDBGjNGpRwo

To claim this, I am signing this object:

bunsenmcdubbs

package main

import (
	"fmt"
	"sync"
)

type Subscriber struct {
	callback func()
}