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Youtube videos about using App Inventor for autonomous mode

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  • Youtube videos about using App Inventor for autonomous mode

    Hello All,

    Last fall I created a series of Youtube videos that talk about how to create programs using App Inventor for Autonomous mode. You will find the YouTube channel at https://www.youtube.com/channel/UCuD...Zd8vA93WvEyFWQ

    You will find some related material at http://www.ortop.org/ftc/AppInventor/index.html#Sample

    Please let me know if you have questions.

    Bruce Schafer, Executive Director
    Oregon Robotics Tournament & Outreach Program

  • #2
    The new App Inventor .OVA file Ver 2.20 and Programming Mode capability in the new downloadable DC/RC apps this year have made autonomous (and APP Inventor programming in general) a lot easer. Awesome Vids from last year though. They really helped out our team. Two Thumbs Up.

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    • #3
      Awesome, we were looking for a tutorial on the Modern Robotics color sensor, we will test this out very soon.

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      • #4
        On Lesson 7: Using a Color Sensor, the notes say it uses HiTechnic Color Sensor, but in the video at minute 7:17, it says the sensor is the Modern Robotics Color Sensor. Are they the same thing or ?

        Thanks.

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        • #5
          Sorry, forgot to post the link: https://www.youtube.com/watch?v=nSUT...ature=youtu.be This is Lesson 7. See minute 7:17

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          • #6
            The video was created using the Modern Robotics Color Sensor. After the video was created the program described in the video was tested with the HiTechnic Color Sensor. It worked with this sensor as well. It was more reliable with the HiTechnic if I increased the CurrentSaturation comparison in the While Test from 0.5 to 0.7.

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            • #7
              We are interested in learning to use the Modern Robotics Gyro sensor, and it seems there isn't any help to get started programming that in App Inventor. If you or someone you know comes up with a tutorial for that also, that would be helpful. My son used gyro successfully in the FIRST Lego League level and wants to keep using it, but we only use App Inventor.

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              • #8
                Hi Mr. Schafer,

                My son and I are trying out your youtube Modern Robotics Color Sensor Lesson now. https://www.youtube.com/watch?v=nSUTOUKN9Js At minute 15:28, the program calls for "WaitOneFullHardwareCycle" which is not in my updated version of App Inventor. What should we do? Do we skip that part of is there a new button that does the same function? Please help.

                https://www.dropbox.com/s/boli90r99x...utube.pdf?dl=0 Here is what my computer is showing (page 2).

                Thanks. Team 6041

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                • #9
                  Sorry for the delay. I'll install the new App Inventor and get back to you soon.

                  ...Bruce

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                  • #10
                    Let me do some checking. If I find something I'll let you know. If not, I'll consider buying a gyro sensor and developing a tutorial.

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                    • #11
                      Originally posted by RoboticsFun View Post
                      Hi Mr. Schafer,

                      My son and I are trying out your youtube Modern Robotics Color Sensor Lesson now. https://www.youtube.com/watch?v=nSUTOUKN9Js At minute 15:28, the program calls for "WaitOneFullHardwareCycle" which is not in my updated version of App Inventor. What should we do? Do we skip that part of is there a new button that does the same function? Please help.

                      https://www.dropbox.com/s/boli90r99x...utube.pdf?dl=0 Here is what my computer is showing (page 2).

                      Thanks. Team 6041
                      None of the waitfor...hardwarecycle calls are needed any more.

                      These have been eliminated from Java and AppInventor this season.

                      All motor and servo actions are done immediately, so no waiting is required.

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                      • #12
                        Originally posted by RoboticsFun View Post
                        Hi Mr. Schafer,

                        My son and I are trying out your youtube Modern Robotics Color Sensor Lesson now. https://www.youtube.com/watch?v=nSUTOUKN9Js At minute 15:28, the program calls for "WaitOneFullHardwareCycle" which is not in my updated version of App Inventor. What should we do? Do we skip that part of is there a new button that does the same function? Please help.

                        https://www.dropbox.com/s/boli90r99x...utube.pdf?dl=0 Here is what my computer is showing (page 2).

                        Thanks. Team 6041
                        I can confirm what Philbot said in his reply earlier today. The new version of App Inventor released earlier this month no longer needs calls to WaitOneFullHardwareCycle. In fact, this feature has been removed.

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                        • #13
                          I think "WaitOneFullHardwareCycle" has been remove in Release 16.03.09 . You can visit https://github.com/ftctechnh/ftc_app and check it.

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                          • #14
                            Thanks for the replies. We will continue the Lesson next week and see if the program runs as intended. Thanks again!

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                            • #15
                              In Lesson 6, is it necessary to set the mode to Run_to_Position? It seems the program is not using that capability. Instead it's testing the encoder values directly.

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