I am using for some month an unchanged Arduino scriped called "p5". You can download the script from codebender.

The script has the basic functions:

• slow motion = reduce viration motor speed,
• fast motion = speed up
• listen to other boards: adjust/sync vibration motor speed to other boards
• send out measured motion
• sleep modus

The form of the vibrator / dildo suggests that control of the motor will be done by horinzontal in - out - in - out motions (up and down arrows).

But by twisting the vibrator you get a great vibration motor boost! This wasn't intended as the form of older cases were not round. But it's a great feature.

This example show how form and function can influence each other (wanted or unwanted). For a maker it's not easy to understand the complex relationship between form and function.