PCB updates

[AJ-Koenig]

@Xerxes31415 will design and create the latest board revision

Overview

The Open Source Sex Machine (OSSM) is undergoing a significant board revision to version 3.0. This update focuses on improving power delivery, enhancing motor control capabilities, and optimizing the overall design for efficiency and compactness.

Key Changes

1. USB Power Delivery (USB PD) Implementation

• Transition from previous power source to USB PD
• Benefits:
  • Increased power efficiency
  • Wider range of compatible power supplies
  • Potential for improved safety features
• Considerations:
  • May require updates to power management firmware
  • Need to ensure compatibility with various USB PD power sources

2. RS485 Motor Programming Support

• Addition of RS485 interface for motor programming
• Advantages:
  • Enhanced motor control capabilities
  • Potential for more precise and complex motion profiles
  • Improved communication reliability
• Implementation notes:
  • May require development of new motor control protocols
  • Potential for expanded feature set in motor functionality

3. Size Reduction

• Overall decrease in board dimensions
• Implications:
  • Improved compatibility with smaller enclosures
  • Potential for reduced material costs
  • May require redesign of mounting solutions

4. Removal of Unused Components

• Streamlining the board by eliminating unnecessary elements
• Benefits:
  • Reduced complexity
  • Potential cost savings
  • Improved reliability by reducing potential points of failure
• Considerations:
  • Need to carefully evaluate which components are truly unused
  • Ensure removal doesn't impact future expandability

Action Items

1. Finalize the list of components to be removed
2. Design new PCB layout incorporating USB PD and RS485 interfaces
3. Update firmware to support new power management system
4. Develop or modify motor control protocols for RS485 communication
5. Create documentation for the new board version
6. Plan testing procedures for all new features and changes

Resources Needed

• USB PD controller chips
• RS485 transceiver ICs
• Updated PCB design software files
• Revised bill of materials (BOM)

[AJ-Koenig]

Currently @Xerxes31415 is planning to use a ESP32-S3 as the chipset.