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In his talk at MountainWest RubyConf 2007, Michael Hewner discusses the theme of customizing USB devices using Ruby. He begins by connecting with the audience through humor related to Unix customization, highlighting the pride many programmers take in personalizing their environments. However, he warns against complacency in customization and suggests that there is a vast realm of possibilities beyond traditional software tweaks, particularly in the physical manipulation of hardware.

Hewner introduces the idea of controlling USB devices through Ruby, emphasizing that creating these devices can fulfill the creative impulses of hobbyist hackers. He elaborates on USB devices, explaining their self-describing properties, the advantages of Human Interface Devices (HID), and the simplified approach to employing Ruby to interface with these devices. Key points from his talk include:  
- **Customization of Devices**: Embracing fun over utilitarian setups, like using a quirky USB interface to control media playback.  
- **USB Specifications**: Insight into how devices signal what they are and their flexible configuration options.  
- **HID Communication Protocol**: Understanding how HID devices transmit data and how Ruby can be utilized to interpret this data effectively.  
- **Practical Examples**: He shares anecdotal evidence of his experimentation with a Toshiba LED Control Module remote control that he reverse-engineered for personal use.  
- **Technical Steps**: Details about USB interactions in Ruby, including obtaining vendor and product IDs and managing device configurations.  
- **Challenges and Lessons Learned**: Sharing insights into the development process of interfacing C++ with Ruby and the importance of unit testing.  
 
Hewner concludes by encouraging the audience to explore DIY USB projects, emphasizing the joy and creativity that can be harnessed through technology. He invites collaboration on projects and expresses excitement for the future of integrating hardware with programming languages like Ruby, underscoring that the journey in technology should always revolve around fostering creativity and innovation among hackers and makers.

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