TWiT Throwback (Video)

TWiT Throwback (Video)

By TWiTNewsTechnologyTech News
Download on the App Store

TWiT Throwback (Video) episodes

  • Tech News Today 1508: MRI Hat

    Tonight, we talk about a new lawsuit that says Facebook's opt-out auto-tagging feature is a violation of our biometric privacy. If you want to devote your life to curing disease, the Oculus division of Facebook is apparently not the place to do it. Mary Lou Jepson, formerly of Google, is now leaving Oculus to start her own company to cure disease with an MRI that might be the size of a ski hat. Next, we check in with Sam Machkovech from Ars Technica about the next Battlefield, the rumored Nintendo NX, and the human centipede game Push Me Pull You. Then, we check in with Ian Kar from Quartz about the tumbling stock of the mobile payments company Square.

    Hosts: Megan Morrone and Jason Howell

    Guests: Sam Machkovech and Ian Kar

    Download or subscribe to this show at https://twit.tv/shows/tech-news-today.

    Thanks to CacheFly for the bandwidth for this show.

    Sponsors:

    • BLUEAPRON.COM/TWIT
    • trunkclub.com/tnt
    • ziprecruiter.com/tnt

      • 56 min
    • This Week in Law 344: TlhIngan Konami Ngoq DMCA

      Paramount v. Axanar and a legal brief written in Klingon, Political Campaigns and music licensing, Lenz v. Universal and discouraging abuse of the DMCA takedown process, copyright clash over cheerleading uniforms and more!

      Photo credit: Falashad.

      Hosts: Denise Howell, Emory Roane, and J. Michael Keyes

      Guest: Marc J. Randazza

      Download or subscribe to this show at https://twit.tv/shows/this-week-in-law.

      Public list of discussion points, TWiL on Facebook

      Attorneys may submit a self-study form to their local CLE board seeking MCLE credit approval. Please check the rules and requirements for your specific jurisdiction before submitting any forms.

      Special thanks to Nigel Clutterbuck for the TWiL theme music.

      Thanks to CacheFly for the bandwidth for this show.

      Sponsors:

      • trytunnelbear.com/twil
      • FreshBooks.com/twil

        • 1 hr 58 min
      • This Week in Enterprise Tech 188: Interop 2016

        Oracle picks up Opower, Viv wants to be everyone's personal assistant, Microsoft to block SHA-1, Vivek Wadhwa's presentation about disruption, the changing mission of Interop, and more!

        Hosts: Fr. Robert Ballecer, SJ, Curtis Franklin, and Louis Maresca

        Guest: Brian Chee

        Download or subscribe to this show at https://twit.tv/shows/this-week-in-enterprise-tech.

        Thanks to CacheFly for the bandwidth for this show.

        Sponsors:

        • canary.tools/twit - use code: TWIT
        • igloosoftware.com/twit

          • 1 hr 3 min
        • Tech News Today 1507: Canado, Not Canadon't

          Lyft and GM are set to begin testing their autonomous fleet of ride-sharing Bolts next year, Microsoft touts 300 million devices running Windows 10, Netflix offers new data usage controls, Tesla S has an in-cab upgrade for more battery capacity, the Void looks like the best virtual reality experience ever, and more.

          Hosts: Megan Morrone, Jason Howell, and Fr. Robert Ballecer, SJ

          Guests: Mary Jo Foley, Alex Kantrowitz, and Charlie Hall

          Download or subscribe to this show at https://twit.tv/shows/tech-news-today.

          Thanks to CacheFly for the bandwidth for this show.

          Sponsors:

          • ziprecruiter.com/tnt
          • trunkclub.com/tnt
          • BLUEAPRON.COM/TWIT

            • 1 hr 4 min
          • This Week in Computer Hardware 362: The World's Fastest GPU? We'll Find Out Tomorrow

            Patrick Norton is joined by Allyn Malventano to discuss NVIDIA's mysterious new countdown website, AMD's A10-7860K/A8-7670K, Corsair's H80i v2 High Perf Liquid CPU Cooler, LEDE's split from OpenWRT, ICY DOCK's storage solutions, and more!

            Hosts: Patrick Norton and Allyn Malventano

            Download or subscribe to this show at https://twit.tv/shows/this-week-in-computer-hardware.

            Thanks to CacheFly for the bandwidth for this show.

            Sponsor:

            • wealthfront.com/twich

              • 41 min
            • Home Theater Geeks 303: Darbee's Vision

              Scott Wilkinson talks with Larry Pace, president of DarbeeVision, about his company's video processing.

              Host: Scott Wilkinson

              Guest: Larry Pace

              Subscribe to Home Theater Geeks at https://twit.tv/shows/home-theater-geeks

              Thanks to Cachefly for the bandwidth for this show.

              Sponsors:

              • opticalcablesbycorning.com
              • curiositystream.com/twit offer code: TWIT
              • Epson.com/ecotankleo

                • 1 hr 8 min
              • Know How... 209: Servo Motor vs. Stepper Motor

                We show how to build a pan and tilt for your camera using stepper motors and an Arduino.

                Servomotor vs. Stepper Motor in a Servo Mechanism

                Servomotor:

              • A servo is a device that uses a motor with few poles (4-12+) along with some kind of feedback to move a shaft to a particular position.
              • In the case of the servos we're accustomed to using, a simple potentiometer connected to the gearing allows us to put a servo in a particular position.

                • Stepper Motor:

              • A stepper motor is built on a multi-phase motor, with a large number of poles, (50-100+) that moves in "steps"
              • These steps are made by pulsing the various phases of the motor to achieve rotation
              • Stepper motors are usually NOT used with feedback, instead counting on their inherent angular position (created by the way the coils and magnets are laid out in the can) to "step" to particular positions.

                • Pro/Cons:

              • Stepper motors offer more torque at low speeds AND offer "holding torque" because of its inherent angular position.
              • Stepper motors tend to be cheaper
              • Stepper motors can be used without a position encoder
              • Stepper motors lose as much as 80% of their initial torque at 90% speed
              • Stepper motors are slow and not good at accelerating an opject
              • Because they have no positional feedback, it's possible to miss a step
              • Stepper motors suffer from vibration and resonance problems (annoying whine)

              • Servos can move much more quickly (up to ~2,000rpm)
              • Servos have more torque at high speed
              • Servos are more efficient
              • Servos don't vibrate as much as stepper motors
              • Servos require complicated feedback and drive circuitry
              • Complicated gearboxes (prone to destruction)
              • More expensive

                • Now... let's take a look at OUR Stepper Motor!

                28BYJ-48 Motor + ULN2003 Driver

                Important Specs:

              • 5 Volts
              • 4 Phase
              • Stride Angle: 5.625
              • Speed Variation Ratio: 1/64

                • What does this tell us?

              • This will work on the same 5V power source we're using for the Arduino
              • A "stride angle" of 5.625 gives us 64 steps for a full rotation of the shaft. (360 / 5.625 = 64)
              • It is down-geared 64 times: That means the motor shaft has to spin 64 times for every time the stepper shaft rotates once.
              • This means we have 4096 steps for full rotation of the stepper shaft: (360 degrees / (5.625 / 64) = 4096)

                • OK... let's build!

                Parts List:

                Arduino of your Choice

                Stepper Motor and Driver

                5V Power Supply

                Breadboard

                What's What?

              • Show the power input and switch
              • Show IN1-4
              • Show the motor connector

                • Let's put it together!

              • Connect the motor to the driver board
              • Attach a 5V power supply to the power-in on the driver board
              • Connect IN1-4 to Arduino digital pins 4-7
              • Connect power to the Arduino

                • That's It!

                Let's Program!

                The Code is Available at the link below:

                https://www.dropbox.com/s/ty21w4exs6ruka9/KH209_Stepduino.zip?dl=0

                The STL Files for our 3D Printed frame is at the link below:

                https://www.dropbox.com/s/jfpn6furd033irn/KH209_Stepduino_STL_Files.zip?dl=0

                These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/know-how/episodes/209

                Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

                Sponsors:

                • ifixit.com/twit enter code KNOWHOW
                • digitalocean.com - promo code: KNOWHOW

                  • 46 min
                • Ham Nation 246: Amateur Radio Firestorm
                  Bob explains why the iC 7300 is setting Amateur Radio on fire, Gordo reports back from Las Vegas, get this weeks update from Newsline, and Val interviews David Collingham K3LP about the VP8 expeditions.

                  Hosts: Bob Heil, Gordon West, George Thomas, Don Wilbanks, Valerie Hotzfeld, and Amanda Alden

                  Guest: David Collingham

                  Thanks to Joe Walsh who wrote and plays the Ham Nation theme.

                  Subscribe to Ham Nation at https://twit.tv/shows/ham-nation

                  Thanks to CacheFly for the bandwidth for this show.

                  Sponsors:

                  • icomamerica.com/hamnation
                  • Amazon.com/TWITRX
                  • dxengineering.com/hamnation

                    • 1 hr 23 min
                  • Tech News Today 1506: The Future of Our Face

                    Tonight we talk about YouTube Unplugged, a rumored bundled selection of traditional cable channels that will require YouTube to secure deals with the major carriers. NBCUniversal, CBS, 20th Century Fox and Viacom are all part of the discussions, but nothing is locked down at this point. We also cover the update of Apple Music, the Samsung Smart Fridge, a 10-year old bug bounty hunter, and more. Next we talk to Ethan Chiel from Fusion about FaceFind and Kerry Davis from Engadget about eHang, bespoke robot surgery, and artificial organs.

                    Hosts: Megan Morrone and Jason Howell

                    Guests: Ethan Chiel and Kerry Davis

                    Download or subscribe to this show at https://twit.tv/shows/tech-news-today.

                    Thanks to CacheFly for the bandwidth for this show.

                    Sponsors:

                    • trunkclub.com/tnt
                    • BLUEAPRON.COM/TWIT
                    • ziprecruiter.com/tnt

                      • 51 min
                    • Android App Arena 96: Location Exploration

                      Jason Howell demonstrates World Around Me, Guides by Lonely Planet, Shuffle My Life, and The Rock Clock.

                      Host: Jason Howell

                      Download or subscribe to this show at https://twit.tv/shows/android-app-arena.

                      Bandwidth for Android App Arena is provided by CacheFly.

                      Sponsor:

                      • trytunnelbear.com/arena

                        • 13 min

                      About TWiT Throwback (Video)

                      From the publisher's feed

                      Dig into the TWiT.tv archives and enjoy episodes from ten years ago. It's a tech time machine!