TWiT Throwback (Audio)

TWiT Throwback (Audio)

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TWiT Throwback (Audio) episodes

  • Know How... 138: Towers Time Forgot, PID Settings, and Feedback

    Learn about the Microwave Radio Relay Skyawy, RasOSMC is awesome, PID settings for your quadcopter, eBook reader that's not a Kindle, getting NAT'ed by your ISP, and a map of no drone fly drones.

    Let's talk PID

    P = "Proportional Gain Coefficient"

  • P addresses the algorithm responsible for balancing the input from the pilot with the data from the sensors.
  • It "wants" to level the sensors
  • A higher P setting makes the craft more reactive to angular change
  • A lower P setting will make the craft most "sluggish" and less apt to "snap" back to level

    • The takeaway is that the higher your P setting, the more your FC will fight to keep the craft level. If your P is too high, you'll typically see oscillations in the craft as the controller constantly overcorrects its angle to level.

    I = "Integral Gain Coefficient"

  • I addresses the algorithm responsible for balancing the corrections from P... over time.
  • It wants to "spread out" the corrections that the P value is pushing through the FC
  • A higher I setting will stretch out the corrections from P over a longer period of time
  • A lower I setting will enact the P corrections quickly

    • The takeaway is that the higher the I settings, the more smoothly your craft will move

  • If your craft wobbles during descent, your I setting is too low.
  • If your craft wobbles during punch-out, your I setting is too high.

    • D = "Derivative Gain Coefficient"

  • D is the algorithm that softens the corrections from P
  • It wants to "smooth out" the corrections that the P value is pushing through the FC
  • At a higher setting, it will reduce the input the P value has on the FC as it gets closer to level

    • The takeaway is that we don't use D.

    If you want acro:

  • High P
  • Low I
  • Increased D

    • If you want smooth and stable:

  • Low P
  • High I
  • Less D

    • The process for tuning is simple, but can take some time.

  • Set I & D to "0" (If you're using a KK, you don't have D settings)
  • Set P to 20 and fly the craft.
  • If it flies smoothly, increase P by 10 and fly the craft
  • Repeat step 3 until you start noticing high-frequency oscilations
  • Back off your P settings by 10. You now have your ideal P setting
  • Set I to 20 and fly the craft
  • Practice descent
  • If it wobbles, increase I - then repeat descent
  • Repeat step 8

    • 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.

    Tweet at us at @padresj, @Cranky_Hippo, and @Anelf3

    Sponsors:

    • lynda.com/knowhow
    • smartthings.com/twit with code TWIT

      • 1 hr
    • Marketing Mavericks 50: The Art of Tweeting

      We talk with Joel Comm about how to engage on Twitter, what social networks are right for you, and why real-life networking still works.

      Host: Tonya Hall

      Guest: Joel Comm

      Producer: Tonya Hall

      Download or subscribe to this show at https://twit.tv/shows/marketing-mavericks.

      Thanks to CacheFly for the bandwidth for this show.

      Sponsor:

      • squarespace.com offer code: MM

        • 52 min
      • Tech News Today 1234: Teens Fail to Flee Facebook

        DJI's got a cool new drone, Apple went overboard to create an animated watch face for the Apple Watch, and more...

        Host: Mike Elgan

        Co-Host: Shara Tibken

        Guests: Caitlin Huston, Frank Bi, and Carmel DeAmicis

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

        Check out the full show notes for today's episode.

        Thanks to CacheFly for the bandwidth for this show.

        Sponsors:

        • Gazelle.com
        • ziprecruiter.com/tnt

          • 30 min
        • Ham Nation 191: K6TD Tells Us About the Visalia Convention

          The upcoming International DX Convention in Visalia, California, 2015 Baker 2 Vegas, building a 2m quarter wave antenna, and more!

          Hosts: Bob Heil, Gordon West, George Thomas, Don Wilbanks, Dale Puckett, and Amanda Alden

          Guest: Kevin Rowett

          Download or subscribe to this show at https://twit.tv/shows/ham-nation.

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

          Thanks to CacheFly for the bandwidth for this show.

          Sponsors:

          • AudiblePodcast.com/hamnation
          • dxengineering.com/hamnation
          • IcomAmerica.com/hamnation

            • 1 hr 14 min
          • This Week in Google 295: Bovine Avoidance Mechanism

            Chrome notification spam, how to get a job at Google, Android Wear now has more than 1,000 different watch faces, and more.

            Hosts: Leo Laporte and Jeff Jarvis

            Guest: Matt Cutts

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

            Thanks to CacheFly for the bandwidth for this show.

            1 hr 43 min
          • Android App Arena 40: Repurposing Old Devices

            Hands on reviews of AutoBoy DashCam, Dormi Baby Monitor, Camio, and Riff.

            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:

            • prosper.com/twit

              • 16 min
            • Tech News 2Night 312: Would You Pay YouTube for No Ads?

              Apple Watch reviews are in, the DEA forgot that mass surveillance is illegal, the Brontosaurus is back, Hilary hires a Googler, and more...

              Host: Megan Morrone

              Guest: Iain Thomson

              Download or subscribe to this show at https://twit.tv/shows/tech-news-2night.

              Check out the full show notes for today's episode.

              Bandwidth for Tech News 2Night is provided by CacheFly.

              Sponsor:

              • lynda.com/tn2

                • 18 min
              • Windows Weekly 408: Looped

                First impressions on the Surface 3, what we know about Redstone, Windows Server 2016 preview to come in May, Xbox One delivers the April 2015 system update, Microsoft Build Developer Conference meetup, and Gabe Aul drops in to announce the release date of the next Windows 10 Mobile preview!

                Hosts: Paul Thurrott, Mary Jo Foley, and Leo Laporte

                Download or subscribe to this show at https://twit.tv/shows/windows-weekly.

                Check out Paul's blog at the thurrott.com.
                Check out Mary Jo's blog at the AllAboutMicrosoft.com.

                Thanks to CacheFly for the bandwidth for this show. The Windows Weekly theme music is courtesy of Derek K. Miller.

                Sponsors:

                • lynda.com/windows
                • blueapron.com/TWiT

                  • 2 hr 1 min
                • iFive for the iPhone 137: Layout by Instagram, Hobnob

                  Create and share Instagram collages with Layout, practice addition or multiplication with Sushi Monster, specifying a Wi-Fi network for your iOS devices, reclaim space on your iPhone using the new iCloud Photo Library, and sending invites through text messages with Hobnob.

                  Host: Megan Morrone

                  Thanks to CacheFly for the bandwidth for this show.

                  Sponsor:

                  • lynda.com/ifive

                    • 12 min
                  • FLOSS Weekly 331: OAPI

                    Randi Harper, founder of the Online Abuse Prevention Initiative (OAPI) joins us to talk about online abuse and OAPI. OAPI is a nonprofit organization dedicated to reducing and mitigating online abuse through the study and analysis of abuse patterns, the creation of anti-harassment tools and resources, and collaboration with tech companies seeking to better support their communities.

                    Hosts: Randal Schwartz and Dan Lynch

                    Guest: Randi Harper

                    Download or subscribe to this show at https://twit.tv/shows/floss-weekly.

                    Thanks to CacheFly for providing the bandwidth for this podcast, and Lullabot's Jeff Robbins, web designer and musician, for our theme music.

                    53 min

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