Know How... (Audio)

By TWiT

Get your gaming on! Jason Howell and Ars Technica's Sam Machkovech bring you 12 episodes and cover it all, from tips and tricks, consoles, gaming rigs, controllers, Virtual Reality, classic gaming, li... more

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FAQs about Know How... (Audio):

How many episodes does Know How... (Audio) have?

The podcast currently has 270 episodes available.

Know How... (Audio) episodes:

February 08, 2018KH 368: Multirotor 101 - Part III - Padre and Jason build a FPV system for the ever-popular SYMA system.
Feedback:FPV Help -- William B. "KITAs, I am excited that you have brought drones back to Know How! I watched when you did drones in 2015, but only recently have I been getting very much into designing and building my own. I started with the trainer you suggested and have graduated to 250 and 450 class quads, but now I want FPV. I've been looking at some options and they all look either too expensive or too complicated. I'm not sure if I want goggles, because I actually like to SEE my drone in addition to being able to see FROM the drone. What are my options and what would you suggest for a budget of ~$200?" Eachine OTG Receiver ~$23
Allow me to interface a receiver with my PROPERLY Equipped Android phone or tablet

5.8 Ghz (so it won't crowd the already crowded 2.4Ghz spectrum
THIS WON'T WORK ON ALL DEVICES!
Must support OTG (On The Go)
Must support UVC (USB Video Class)
Eachine TX526 Transmitter ~$18
5.8Ghz (40 Channels)

3 Output power levels (25/200/600MW)

Can transmit audio AND video
7-24 Volts
Eachine RC832 5.8Ghz Receiver ~$15
5.8Ghz
48 channels
Eachine TX01 NTSC Super Mini Transmitter + Camera ~$22
5.8Ghz

25mw

Combines a camera with a transmitter/antenna
Can run on 3.3-5v (Can be run on a single LiPo)
Eachine EV100 720*540 5.8Ghz FPV Goggles ~$100
Diversity Antennas
Front-Facing Camera
The STL files for the FPV Mount are at the link below:https://www.dropbox.com/s/oa6e6ezud3s62iz/KH368_FPV.zip?dl=0 Syma X5c ~$35Exercises
Hovering above the ground effect

Nose Out

Circle of Death
Nose In
The ROVA Selfie Drone (By IOTGroup) ~$150What you get in the box:
ROVA Drone

2 x 2s (7.4v) 1200mAh battery

USB Charger

Carrying Case
16GB SD Card
What is it?
a phone-controlled drone (iOS or Android)

Connects via WiFi (Password 00000000)

8 Minutes of flight

Forward-Facing Camera + Downward facing camera (12MP/5MP)

These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/know-how/episodes/368

Hosts: Fr. Robert Ballecer, SJ and Jason Howell
Sponsor:
casper.com/savings
...more
50min
February 08, 2018KH 368: Multirotor 101 - Part III
Padre and Jason build a FPV system for the ever-popular SYMA system.

Hosts: Fr. Robert Ballecer, SJ and Jason Howell

For full show notes, visit https://twit.tv/shows/know-how/episodes/368
Sponsor:
casper.com/savings
...more
50min
February 01, 2018KH 367: CES for Your Car, Wrist, and Bottom - Alexa in the car, a smartwatch with month-long battery, and exercising in the office.
The toys from CES 2018 are starting to arrive in the studio and Patrick/Padre are ready to give you a first look! From Alexa in your vehicle, to a battery that charges your phone AND your car, to a smart watch that only needs to be charged once a month, and a way to exercise in the office, we've got the swag you need to see!
Roav Vivo ~$50
2 x PowerIQ-equipped USB Ports (Automatically charges at the highest rate)
iPhone 7 in 2.2 hours instead of 3.2 hours

iPad mini in 3.6 hours instead of 7 hours

But the big feature is Amazon Voice Assistant

It connects to your Android/iOS phone with Bluetooth 4.1 -- AND then your phone connects to your car

It has dual MEMS microphones and a dedicated Noise reduction chip so that it can hear you in a noise car cabin
This enables:
Hands-free calling

Control over ANYTHING in your Amazon voice assistant network

25,000 skills

Audio-enabled directions and phone functions
Demo
App

Audio Book
Splitsecnd (Split Second) $299
Emergency response device (Crash Detection and Response) (Lifetime Coverage)

3G Connectivity

GPS with web-based dashboard

Integration with Amazon Voice Assistant

REAL-TIME location monitoring and geo-fencing

Location history

Battery backup (can't be stopped by cutting power in accident or theft)

Pi-Hole Woes

- Jason Brown

"I'm trying to get a better handle on how Pi-Hole works. My wife and I signed up for Hulu's ad-free option. Apparently, some shows aren't part of this agreement, so they give you an ad at the beginning and end of certain shows.

We just started a show that was supposed to give us those beginning/end ads, but ended up going straight to the show.

So, do we think that was because of a glitch on Hulu, or did Pi-Hole just do it's job? Every browser-based ad-blocker always gave us a blank nag screen for 30 seconds. But that didn't happen this time. So it feels like the nature of 'ad-free Hulu ads' might be different than the normal ones.

There's so much going on with ad-blockers and anti-ad-blockers, that it's hard to keep up with. So I'd love it if someone more versed in the subject could provide a simple primer.

What I know (I think) is that ad-blockers only affect 3rd party ads. But natively hosted ads aren't typically affected. So is this some weird case where Hulu has such an indirect connection to the ads that I was able to skip them entirely?

I want to try to educate others about ad-blockers, and how different types of ads are affected. But I don't want to regurgitate misinformation."
How do Browser-Based Ad-Blockers work?
As content is loaded into a browser, it looks at the incoming page and removes (or replaces) known ad-scripts AND sites that are known to serve ads.

This means your ad-blocking experience will depend on them updating their script and site list.
How does Pi-Hole work?
It's not looking at scripts at all. (Not enough power)

It's only looking at the DNS requests coming from and computer configured to request sites THROUGH the Pi-Hole

This means it can't stop native requests (unless specifically black-listed)
Roav C2 Dash Cam ~$60
1080p sensor with a 145 degree f2 wide-angle lens

WDR Sony Exmore IMX323 sensor with Wide Dynamic Range and nigh-vision capabilities

Steel frame for temp-resistance

Internal battery

3" LCD screen

SD card slot

G-force sensor (for

Loopi

These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/know-how/episodes/367

Hosts: Fr. Robert Ballecer, SJ and Patrick Delahanty
Sponsors:
Ring.com/KNOWHOW
ITPro.TV/knowhow - use the code KNOWHOW30
...more
1h 7min
February 01, 2018KH 367: CES for Your Car, Wrist, and Bottom
Alexa in the car, a smartwatch with month-long battery, and exercising in the office.

Hosts: Fr. Robert Ballecer, SJ and Patrick Delahanty

For full show notes, visit https://twit.tv/shows/know-how/episodes/367
Sponsors:
RING.COM/KnowHow
ITPro.TV/knowhow - use the code KNOWHOW30
...more
1h 7min
January 25, 2018KH 366: Cable Management (Burke in a Box!) - Practical products for organizing your tangle of cables.
Are you tired of the rat's nest of cables under, over and through your desk, nightstand, and counter? Well so are we! In this cableriffic episode of Know How, Padre & Megan Morrone show you some practical products for organizing your tangle of cables... Then we show you how Burke would handle it! Add in some of Megan's favorite speakers from CES 2018, and you've got a fun-for-the-whole-family episode of Know How! (And Burke in a Box)
Megan's Cable Cubby hole!
BEFORE IMAGE

Pre-Fab from Amazon. G.U.S Brand

The Burke Box made from a Desk Organizer

Row of Binder Clips

USB Wall Outlet

Portable Chargers Galore

Padre's Cable Managment Mess!

First, get yourself some braided cables!
(Fancer) 10-pack of 3' USB-C Cables
3 feet

Nylon Braided
(Unisame) 6-pack of 6' USB-C Cables
6 feet

Nylon Braided

You're also going to need a good charger
Anker Premium 60W Wall Charger
5 Ports (4 x USB, 1 x USB-C)

Can deliver 60W
Anker 60W 10-port USB Wall Charger
10 Ports

60 Watts
The KH CabMan!
Anker Premium 60W Wall Charger

M3 Hex Nut Set (Need 4x28mm Screws, 4xNuts, 2x12mm Screws
STL Files can be found at the link below:
https://www.dropbox.com/s/djl147nxobplerm/KH366_CabMan.zip?dl=0

Here's the Tinkercad page so you can edit it yourself!

https://www.tinkercad.com/things/6611SapRUyD-cabmanv3/editv2

Some Stuff from CES

Dumb Speakers from x-mini because sometimes you don't want your Bluetooth speaker to listen to your living room.
X-Mini Supa
Oldschool design with one button.

Pair with your phone or use an Aux cable or the MicroSD card reader in the back.

10W speakers.
pre-set EQ (on the back)
Pros - Sound, Design

Cons - Weight, a little hard to adjust the volume.
X-Mini Infiniti
Great sound for different places in your living room, at a price.

Four speakers and a sub-woofer.

360 degree sound.

If you like the design of the Amazon Echo, you'll like this.

X-Mini announced several new products at CES that will come out in June.

X-mini INFINITI S will offer 3D surround sound and a removable leather carry strap

X-mini EVOLVE 2 is the second-generation wireless hybrid speaker headphones with aptX technology for improved audio and video synchronization over Bluetooth

Waterproof speakers

These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/know-how/episodes/366

Hosts: Fr. Robert Ballecer, SJ and Megan Morrone
...more
45min
January 25, 2018 KH 366: Cable Management (Burke in a Box!)
Practical products for organizing your tangle of cables.

Hosts: Fr. Robert Ballecer, SJ and Megan Morrone

For full show notes, visit https://twit.tv/shows/know-how/episodes/366
...more
45min
January 18, 2018KH 365: MultiRotor 101 - Part 2 - Prop balancing, InSpectre, and the Nebula Capsule projector.
Want an easy-to-use tool to see how vulnerable you are to Meltdown and Spectre? Tired of "Jello" videos from your drone? Feel like building the 2018 Alien-X? Need a soda-can sized, Android-powered pico projector will full-size features? -- Padre and Jason have the answer to all of these questions on this flu-ridden episode of "Know How"!
InSpectre
Written in Assembly by Steve Gibson

Only 125k (would have been much less except he had to include a picture to make it a legit Win10 app)

NO INSTALLATION (Runs directly from the executable)

Will examine your vulnerability to both Meltdown and Spectre

MAY cause false positives with AV suites b/c it allows you to enable/disable protection (malware behavior)

Prop Balancing
Unbalanced props are the #1 reason for "jello" video.
They can also cause premature wear on the multi-rotor's motors and frame

Not to mention that the excessive vibration can cause innacuracies in the FC's sensors

Spinning at a few thousand times per second can turn even a small imbalance into a major vibration

So what we need to do is to balance the prop so that weight is as equally spread around the blades (and hub) as possible
Tools and Materials:
A prop balancer
The Du-Bro 499 Tru-Spin Prop Balancer
Level
Plastic Bubble Ruler

Tape or Sandpaper
Procedure:
Assemble the Prop Balancer

Place the prop balancer on a level surface, then level the prop balancer with your bubble ruler.

Mount the prop on the beam, making sure that it's snug in the holder. Turning the prop should turn the beam and vice-versa. -- If the prop isn't properly secured, it will wobble, which will invalidate the balancing.

Place the beam between the arms of the balancer, making sure that it freely turns.

Spin the prop/beam assembly and watch for wobbles. If it wobbles, the prop isn't properly secured.
Set the prop so that both blades are equal distances from the table surface, then release.
The heavier side of the prop will fall.
Add tape to the lighter blade, or sand the heavier blade. -- Repeat the test.
I prefer to add no more than 2 pieces of tape, always on the underside of the blade.
When you can position the prop in any position and it stays in that position, then it's balanced.
It's possible that the HUB is unbalanced. If so, you'll notice that the prop tends to balance with the heavier side of the hub down.

If that's the case, you can sand the heavier part of the hub.

Alien-X
Procedure:
Power up Craft

Enter "Receiver Test" on Flight Controller

Test all inputs. Reverse channels and/or swap cables as needed

Set Subtrims

Set motor layout to "QuadCopter X"

Calibrate ACC

In "Mode" set "Self-Level" to "AUX"

In "Self-Level" set P to 30 and I to 20

Check motor rotation. Flip pairs as needed

Calibrate ESCs

Install props

Balance Center of Gravity

Syma X5c
Exercises
Hovering above the ground effect

Nose Out

Circle of Death

Nose In
Nebula Capsule
DLP 100 Lumen (30,000 hours)

854 x 480 Resolution

4 Hours Battery Life

360 Sound (has Bluetooth conenctivity)

Can be controlled via a phone)

Android 7.1

1 lb

Input: Wireless, HDMI, USB, Bluetooth

Up to 100" size (Really best around 30")

AutoKeystone

These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/know-how/episodes/365

Hosts: Fr. Robert Ballecer, SJ and Jason Howell
Sponsor:
WordPress.com/knowhow
...more
57min
January 18, 2018KH 365: MultiRotor 101 - Part 2
Prop balancing, InSpectre, and the Nebula Capsule projector.

Hosts: Fr. Robert Ballecer, SJ and Jason Howell

For full show notes, visit https://twit.tv/shows/know-how/episodes/365
Sponsor:
WordPress.com/knowhow
...more
57min
January 11, 2018KH 364: You Feeling Lucky? - NMAP, RasPi, Nerf, Lazer Tag, IR, and more...
Fr. Robert Ballecer and Patrick Delahanty show you how to can get information about all the devices on your network, how to turn a Raspberry Pi into a Wi-Fi router, solving filament problems in a 3D printer, and modifying Nerf and Lazer Tag guns.
Nmap Me

"I started a search for a software interrogation program to show all the information about the devices on my network. My search returned some results. But my nerve ending stood on high alert as I started reading about the options within some software available. I was turned off by Wireshark and its complexity. (No disrespect intended to the Wireshark community) Decided a better road traveled would be asking; Has anyone had any experience with this type software and the trust level(from usage)?" - Rud Dog
Fing (Android & iOS)
Basic Networking Mapping

Can do pings & traceroute
NMAP (Windows, macOS, Linux)
nmap is an open source network tool/port scanner that can scan everything from a large network to a single host

It uses raw IP packets to let us know what hosts are available on a network, what ports they have open, what OS they are running and dozens of other parameters available to those who are willing to dive into the network protocols.

Quick Notes:
Basic Commands
When you install NMAP on Windows, its going to install "WinPcap" service (Windows Packet Capture) service -- Allow the install and let it run on startup.

I'm running all these commands in a shell that has root
There's a GUI, but I prefer the command line
Discover all IPs in a subnet
"nmap -sP x.x.x.x/y" (This is a "ping scan")

Where 'x.x.x.x' is the IPv4 address of the subnet you want to scan

Where 'y' is the size of your address space

For example: If I use "ipconfig /all" to determine that I have an address of 192.168.0.76 and a mask of 255.255.255.0

I know my subnet is 192.168.0.0

My subnet size is /24

so I would use the command "nmap -sP 192.168.0.0/24"

You can also use wildcards and ranges (Ex: "nmap 192.168.1.1-50" or "nmap 192.168.1.*")

This tells nmap to send a icmp echo request to ports 443, and 80 to all addresses within the specified subnet.

This only gives us a list of devices that respond to that request

NOTE: Just because a device doesn't respond, that doesn't mean it's not there.
Identify Hostnames
"nmap -sL x.x.x.x/y"

This will send a packet to all the hosts in the range and return their reported network names
Identify the Operating System
"nmap -O x.x.x.x"

This will attempt to identify the OS of the host
Scanning for Open Ports on a specific host
"nmap x.x.x.x"

This will look at a specific host and tell you what ports are open on that host
Show Host Interface and Routes
"nmap --iflist"
Verbose!
Add "-v" to find out what's happening
Saving your scan to a text file
"nmap 'whatever you choose to do' > output.txt

RasPi WiFi Router

"I've made a recent post about using a raspberry pi as a tor box and I figured that I don't need the tor part. So does anyone know how to turn a raspberry pi into a WiFi router on raspbian. Any support will be great!!" - Michael
Turning a Raspberry Pi into a Wireless AP
Image Raspbian onto your SD card
Expand the volume
Open Terminal

"sudo raspi-config"

Select option 7

Select A1
Change the default password
Select option 1

RasPi will reboot
Turn your RasPi into an Access Point
A GIT user by

Fil

These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/know-how/episodes/364

Hosts: Fr. Robert Ballecer, SJ and Patrick Delahanty
Sponsors:
thetrackr.com/knowhow
eero.com code KNOWHOW
...more
1h 1min
January 11, 2018KH 364: You Feeling Lucky?
NMAP, RasPi, Nerf, Lazer Tag, IR, and more...

Hosts: Fr. Robert Ballecer, SJ and Patrick Delahanty

For full show notes, visit https://twit.tv/shows/know-how/episodes/364
Sponsors:
thetrackr.com/knowhow
eero.com code KNOWHOW
...more
1h 1min

FAQs about Know How... (Audio):

How many episodes does Know How... (Audio) have?

The podcast currently has 270 episodes available.