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2.1 Configuring Android Studio for Barcode Library ; 2.2 QR Code Scanner from Image; 2.3 Barcode Scanner ... The code for the MainActivity. java is given below.

Figure 9-9. The NXT Rotation sensor s configuration panel In the Port section, select the motor port where the NXT motor (Rotation sensor) has been connected. The default port for the Rotation sensor is Port A. In the Action section, you should select the Read option if you want the built-in rotation sensor to monitor the value (count) returned by the sensor. Select the Reset option to set the sensor count back to zero. In the Compare section, select the motor s spin direction (Forward or Reverse) to monitor. Select Degrees or Rotations from the bottom drop-down menu, and enter a numeric value in the text box. You must also decide whether the sensor will monitor for a value less than or greater than the configured value by selecting the option in the other drop-down menu (using the Yes/No data plug, you can test for a True or False logic response based on the settings you have configured in the panel).

Figure 6-9. SPOT will then MOVE forward five rotations. Next, I save the program, upload it to SPOT, and run it. Go ahead and create and run this same program on your bot. What happens Well, I pressed the Run button and the C note started to play. But before the C note stopped, motors B and C started spinning. What happened Go back to Figure 6-8, and notice that the Wait For Completion box is unchecked. This means that when the SOUND block starts playing, the program will continue to the MOVE block that spins the motors. But that s not what I wanted SPOT to do. Take a look again at the pseudo-code: SPOT, play a C note for ten seconds and then move forward five rotations. I wanted SPOT to play the C note for ten seconds before moving forward. To do this, I simply need to go back to my SOUND block and check the Wait for Completion box. This will tell SPOT to wait until the SOUND block is finished (ten seconds) before continuing with the program. So, I make this change (see Figure 6-10) and run the program again.

If you ll remember back to 2, the Task List takes your Robot Description and breaks it down into the bot s individual functions move forward, stop, drop rock, etc. Look on your Design Journal page. As I stated before, if you have a good Robot Description written down, the Task List almost writes itself. Go back and review your Robot Description and start listing the individual tasks the StringBot will perform. I ve made my list for the StringBot, and you can view it in Figure 6-2.

CHAPTER 6 MAKE SOME NOISE!

The RIS Rotation sensor s configuration panel is shown in Figure 9-10.

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Welcome to Barcode4J
Barcode4J is a flexible generator for barcodes written in Java . ... EAN-128, GS1- 128 (based on Code 128); Codabar; UPC-A and UPC-E (with supplementals) ...

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