Patrick comes on to teach us how to use a sewing machine along with the techniques, fabric, and hurdles you'll need to know before attempting your own cosplay costume!

Patrick's tips for sewing:

• Get more fabric than you think you'll need because you will make mistakes.
• Measure twice, cut once!
• If you're using expensive fabric, you'll probably want to make a rough draft using cheap fabric like muslin.
• Remember to leave a seam allowance. You'll need extra fabric around the edge in order to sew your seams. An inch should be plenty in most cases.
• Pin fabric before sewing a seam. Not only will you be able to test the fit before sewing, but it will hold the fabric in place while you sew.
• Sewing straight lines is easy. Sewing curves can be challenging.
• Find sewing patterns to help you get the proper shape for your fabric pieces. If you're creating something original, you may be able to use different parts of existing patterns to make various parts of your costume.

If you're looking for fan conventions in your area to show off your costume (or where you can meet other cosplayers or attend panels on cosplay), check Patrick's FanCons.com site.

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

Guest: Patrick Delahanty

Connect with us!

• Don't forget to check out our large library of projects at https://twit.tv/shows/know-how.
• Join our Google+ Community.
• Tweet at us at @PadreSJ, @Cranky_Hippo, @PDelahanty, and @Anelf3.

Thanks to CacheFly for the bandwidth for this show.

Podcast service, 3D printer problem, Entry level gaming laptop, mechanical keyboard, and indoor grow help.

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

For full show notes, visit https://twit.tv/shows/know-how/episodes/307

Follow along as we sit down to finish the Steampunk Goggles Version 2!

See episode 304 for the parts list.

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

Connect with us!

• Don't forget to check out our large library of projects at https://twit.tv/shows/know-how.
• Join our Google+ Community.
• Tweet at us at @PadreSJ, @Cranky_Hippo, and @Anelf3.

Thanks to CacheFly for the bandwidth for this show.

Digital assistants, and how to build your own RasPi Alexa with voice activation.

Amazon Echo $179.99
"- Better for Amazon Services
- Speaker, omnidirectional
- Better as assistant, supports more services
- Smart home controls
- Streaming (for Amazon services, Spotify, Amazon Music, Audible, etc.)"

Google Home $129.99
"- Better for Google Services
- Works with Keep / Express
- Answering questions
- Streaming (for Google services, Play Music, Youtube, etc.)
- Control multiroom system with Chromecast Audio"

DIY AlexaPi

Parts
- Raspberry Pi (Model 3 or Model 2)
- Micro USB cable, and power adapter
- 8 GB or larger Micro SD
- USB Mic
- Speaker
- Keyboard and Mouse

Amazon Developer
Link to site - https://developer.amazon.com/
Web Settings
- Allowed Origins https://localhost:3000
- Allowed Return URL's https://localhost:3000/authresponse

Terminal Commands

Install Alexa

cd Desktop
git clone https://github.com/alexa/alexa-avs-sample-app.git
cd ~/Desktop/alexa-avs-sample-app
nano automated_install.sh

Fill in the fields with the information from your Developer account
ProductID=my_device
Client ID
ClientSecrect

hit CTRL X to save

cd ~/Desktop/alexa-avs-sample-app
. automate_install.sh

Run Alexa Service
cd ~/Desktop/alexa-avs-sample-app/samples
cd companionService && npm start

Run Sample App to Confirm Account
cd ~/Desktop/alexa-avs-sample-app/samples
cd javaclient && mvn exec:exec

Start Wake Word
cd ~/Desktop/alexa-avs-sample-app/samples
cd wakeWordAgent/src && ./wakeWordAgent -e kitt_ai

Custom Wake Word

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

Connect with us!

• Don't forget to check out our large library of projects at https://twit.tv/shows/know-how.
• Join our Google+ Community.
• Tweet at us at @PadreSJ, @Cranky_Hippo, and @Anelf3.

Thanks to CacheFly for the bandwidth for this show.

Part 1 of building your own Steampunk Goggles revision 2.

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

For full show notes, visit https://twit.tv/shows/know-how/episodes/304

Protect yourself with MFA, encrypted messaging apps, and surf anonymously with the TOR browser.

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

Guest: Nathan Olivarez-Giles

For full show notes, visit https://twit.tv/shows/know-how/episodes/303

Revision 2 of the Steampunk Goggles project has improved comfort, strength and a stealthy cartridge system upgrade!

Parts ​
Vintage Steampunk Goggles ~$8
Triple Lens Loupe ~$7
Steampunk Gears ~$7
16 LED WS2812 Ring ($4 x2) ~$8
Arduino Nano ~$3
10k Rotary Potentiometer (Pack of 10 - You only need one)) ~$3
Female Walkery Battery Connector ~$2
30 AWG silicone wiring (Red/Black/White) ~$2

Total: $40.00

3D Parts
1. Right Frame piece [Steampunk_v2_RightFrame]
1. Left Frame piece [Steampunk_v2_LeftFrame]
2. LED Ring Holder (x2) [Steampunk_v2_LEDRingHolder]
3. Bridge Segments (x2) [Steampunk_v2_Bridge]
4. Right Cartridge [Steampunk_v2_CartA1]
5. Left Cartridge [Steampunk_v2_CartB1]
6. Cartridge Door (x2) [Steampunk_v2_Door]
7. Potentiometer Flange [Steampunk_v2_PotFlange]

Tools
1. 3D Printer
2. Soldering Kit
3. Dremel Tool
4. Hot Glue Gun

The code and STL files can be found at the following HERE

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

Connect with us!

• Don't forget to check out our large library of projects at https://twit.tv/shows/know-how.
• Join our Google+ Community.
• Tweet at us at @PadreSJ, @Cranky_Hippo, and @Anelf3.

Thanks to CacheFly for the bandwidth for this show.

Set up your own RaspPi TOR AP!

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

For full show notes, visit https://twit.tv/shows/know-how/episodes/301

Screens and buttons are nice, but it's time to add network capabilities to our Arduino projects. We're going to use an Ethernet shield with an Arduino UNO to build a few basic network-enabled gadgets.

Parts

Geek credit UNO R3 ATmega 328P Dev Board ~$4

Geek credit Ethernet Shield Module W5100 MicroSD ~$6

- or -

W5100 Ethernet Shield R3 (PoE) ~$10


Basics
* There are examples of Ethernet projects build into the Sketch IDE

Ethernet Server with Analog Input

Code Example: _01_WebServer
* Code for this example is under "File - > Examples -> Ethernet -> WebServer"

* We need to change the following in the code:
-- Set the IPAddress to "192.168.0.229"
-- Change the "for" loop so there are only 2 Analog reads

* We need to wire the following:
-- Power to the outer POT pins
-- Center pins to A0 and A1

** Play with the "Refresh" setting to show a quicker refresh

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

Connect with us!

• Don't forget to check out our large library of projects at https://twit.tv/shows/know-how.
• Join our Google+ Community.
• Tweet at us at @PadreSJ, @Cranky_Hippo, and @Anelf3.

Thanks to CacheFly for the bandwidth for this show.

We answer questions from our G+ group! How to balance a quad copter, second monitor recommendations, radio-controlled switch, and how much light is too much for your indoor grow!

Balancing Quads
-- Mr. ROKnBOK
"Has the subject of "balancing the quadcopter" been addressed on KnowHow? If so, please point me to that episode. Thanks, KitAs!"

I need a 2nd Monitor!
-- Daniel Casciato
"Padre mentioned on Windows Weekly episode 471 that one of his best tech purchases was a portable accessory screen for his laptop. This allowed him to use a dual screen setup on the go. 2 questions... 1) what is this screen? 2) Can it be used with a stylus for digital notes, specifically as an input for OneNote?"

Asus MB169C+ ~$150
* 15.6"
* Full HD
* 1920x1080
* IPS
* USB-C ONLY!

Asus MB169V+ ~$190
* Same Specs
* No IPS, USB 3.0

Throw a switch with a RC
-- Wayne Hobbins
"""I'm trying to figure out a way to close a connection with my RC TX using a spare channel that's not passing any electricity like 5 or 12 volts. I know how to do this with a servo and a mechanical switch, but there must be another way.

I thought that the Turnigy transmitter controlled switch might work, but apparently it needs a voltage on one wire to make the connection. I checked the red wires using a ohm meter and there was no difference when switched on and off.

Any ideas?"

We're using an Arduino!
* We're going to use the same setup that we used for the Growduino
* The Arduino will read the PWM value from the receiver, then energizer or de-energize the relay

1. Wire it:
- Arduino 5V to the receiver
- receiver signal to pin 8 of the arduino
- relay ground to ground
- relay positive to pin 7 of the arduino
- circuit through the relay switch pins
2. Program it:
- Use (pulseIn) to read the receiver data value
- Use an if-else to turn on/off the relay

Demo:
1. Assemble circuit
2. Display PWM values from Arduino
3. Show if-else logic

Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

Connect with us!

• Don't forget to check out our large library of projects at https://twit.tv/shows/know-how.
• Join our Google+ Community.
• Tweet at us at @PadreSJ, @Cranky_Hippo, and @Anelf3.

Thanks to CacheFly for the bandwidth for this show.