What if a robot function needs more than 7x the speed? Or stronger than 7x? Enter compound gears.ДЄ wide variety of speed and torque can be achieved by stacking the gears in a certain way, called compound gears.Д«elow is a diagram of one side of a Nothing But Net double-flywheel, which used compound gears to get the flywheel spinning fast enough to launch balls: If the biggest gear is 84 teeth, and the smallest one is 12 teeth, then the fastest one can make a wheel spin is 7x the original motor speed (84/12 = 7). But presumably in this case the builders have chosen this gear ratio because they don't need those things, but they do need more speed. It can't lift as much, throw as far, push as strongly, etc. And what does one have give up in the process? Yes, torque. So the moving part is going almost twice as fast as if it were connected to the motor directly. When the motor turns its gear around once, the gear connected to the moving part goes around almost 2 times. In the second example below, the motor is connected to a 60 tooth gear, and the moving part is connected to a 36-tooth gear. (See two people sharing too-small-blanket, above.) How much more? 3x more! What's the cost? Speed! The moving part is only going 1/3 the speed that it would turn if it were connected to the motor directly. than if it were connected to the motor directly. The moving part can lift more, push more, etc. What does this accomplish? More strength, or torque. So the gear connected to the moving part is moving much more slowly than the motor. VEX File ManagementFrom the file management utility, you can.If a motor is connected to a 12-tooth gear, and a moving part connected to a 36-tooth gear, as shown at left, then the 12-tooth gear will go around 3 times before the bigger gear goes around 1 time. Returns a true if there is space available, false if the queue is full.VEX File ManagementThe file management utility allows you to see all of the programs, sound files and other files that are loaded on your VEX. Set bPlaySounds to true to unmute the VEX.The #define shortcuts are also acceptable: MuteSound() UnmuteSound() Sound QueueThe VEX has an internal queue in order to line up sound commands.This queue will automatically process any waiting sound commands, in order that they are received.You can override/check on the queue with the following commands:PlayImmediateTone(frequency, durationIn10MsecTicks) This command will force the playTone command to jump ahead of the queue.bSoundQueueAvailableA Boolean Variable to check if the sound queue is full.

Set bPlaySounds to false to mute the VEX. Returns true if a sound is playing, false if no sound.bPlaySoundsA Boolean variable to mute the VEX. Use the File Management Utility for downloading sound files onto your VEXRobot Advanced Tools File ManagementPlaying SoundsPlaySound(sound) Plays a specific sound effect that is pre-programmed into the VEXsoundBlipsoundBeepBeepsoundDownwardTonessoundUpwardTonessoundLowBuzzsoundFastUpwardTonessoundShortBlipsoundExceptionsoundLowBuzzShortSound VariablesbSoundActiveA Boolean variable informs the user if the VEX is actively playing a sound.

Playing Sounds PlayTone(frequency, durationIn10MsecTicks) Example: PlayTone(440, 10) Plays a 440hz note for 100ms.PlaySoundFile(fileName.wav)Will play the sound file fileName.wav. ROBOTC SoundsROBOTC with the VEX has a speaker port available on it for playing basic and polyphonic tones.You can play the follow types of sounds:A specific note PlayTone() A system sound PlaySound() A user loaded sound file (.wav) PlaySoundFile()

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