New Technology Introduction: MIT App Inventor

Transcription

1 FIRST Tech Challenge New Technology Introduction: MIT App Inventor Peter Klein 12 September 2015

2 Overview Hardware introduction MIT App Inventor Software installation Additional setup steps Creating an op mode Loading a program Turning a motor Moving a servo Reading a sensor Complete teleop

3 Hardware Introduction Next Gen platform Android based USB interconnect (1) (2) FTC Training Manual (Tomas Eng)

4 MIT App Inventor MIT App Inventor is a blocks-based programming tool that enables everyone, even novices, to learn programming and build fully functional apps for Android devices. In 2015 the MIT App Inventor community of nearly 3 million users representing users in 195 countries. More than 100 thousand active weekly users have built more than 7 million android apps! Special FTC blocks have been added to incorporate the Next Gen platform hardware Browser based Requires local virtual machine to host FTC functionality (1)

5 Virtual Machine? Run another OS (Linux) inside your existing OS Host operating system (Windows) Web Browser PowerPoint Mine sweeper Arduino Guest operating System (Linux) Web server App Inventor server Mines virtual appliance virtual machine (VM) guest operating system

6 App Inventor System Requirements Host operating system Windows Vista SP1 to Windows 8.1 Mac OS X 10.8 to (Yosemite) Linux kernel 2.6 or 3.x (installation difficulty may vary) Browser Mozilla Firefox 3.6 or higher Apple Safari 5.0 or higher Google Chrome 4.0 or higher Virtual machine 6-8 GB hard drive, including saved project files 512 MB RAM (4 GB recommended for you host operating system)

7 Documentation FIRST and Intelitek have worked very hard to provide detailed step-by-step guides! FTC documents Official documents to set up phones, install software, write code Intelitek Slides and interactive tutorials on setting up phone, pairing, writing code Requires a free account FTC forum User experiences, links to official documents

8 Documentation App Inventor (AI) Install Guide App Inventor (AI) Training Manual Android Studio (AS) Training Manual master/doc/tutorial/ FTCTraining_Manual.pdf

9 MIT App Inventor Setup AI Install guide p Download and install Google Chrome and VirtualBox Download virtual appliance and import into VirtualBox Configure virtual appliance network settings Booting up your virtual appliance Accessing App Inventor AI Training manual p Configuring new phones (Same as AS) (1) App Inventor install guide

10 Additional Setup (Same as AS) AI Training manual p. 5-8 Installing FTC Driver Station AI Training manual p Configuring gamepads AI Training manual p Pairing phones AS Training manual p Install phone drivers (1) App Inventor training manual

11 Creating an op mode What is an op mode? Preprogrammed robot behaviors Selectable on driver station Think autonomous vs. teleop Hello world! opelapsed that shows elapsed time AI training guide p

12 opelapsed Designer

13 opelapsed Blocks

14 Build App

15 Delete Old App Must be done each time! (1) App Inventor training manual

16 (1) App Inventor install guide Transfer & Install New App

17 Run App Must create configuration file first time

18 Configuration Files Maps robot hardware to code Code can t scan for dumb components Flexible configuration can be changed without re-compile Give components useful names Servo controller 1 Port 1 Port 2 clawup touchfront Port 1 Port 2 Port 3 Sensor module 1 driver Port 1 drivel Port 2 Motor controller 1 (1) Android studio training guide

19 opelapsed Running Driver station Robot controller

20 Turning a Motor New op mode Add a motor Add a gamepad Show motor speed telemetry AI training guide p

21 oponemotor Designer

22 oponemotor Blocks

23 oponemotor Running Driver station Robot controller

24 Moving a Servo New op mode Add a servo Show servo position telemetry AI training guide p

25 oponeservo Designer

26 oponeservo Blocks

27 Reading a Sensor Modify oponemotor Add a pushbutton Do not allow further motion if button is pressed

28 opmotorlimit Designer

29 opmotorlimit Blocks

30 Full Teleop Multiple Motors Servos Sensors Gamepad inputs

31 optele Designer

32 optele Blocks

33 optele Running

34 Questions?

35 Tips & Tricks 1 Make a virtual appliance available to everyone on your local network Change VirtualBox adapter 1 to bridged mode Inside VirtualBox terminal, check ifconfig eth0 inet addr use this in Chrome Streamline the app uninstall/install process In a terminal or windows command promt with adb installed Adb shell pm list packages grep appinventor should list a package Adb shell pm uninstall <package_name> (ex. Appinventor.ai_test.Kickoff) Adb install <new_package>.apk Delete or move <new_package>.apk so that next build/download from App Inventor has the same filename

36 Tips & Tricks 2 Wireless adb Works with the above uninstall/install process The configuration file generated in the robot controller can be downloaded as an xml file On the phone at: /storage/emulated/0/first/<name>.xml Can be edited manually. Contains the serial numbers of modules