Understanding the Implications of BLHeli Going Out of Business

Lecture by Joshua Bardwell

Introduction

• Topic: The implications of BLHeli, a firmware company for ESCs, going out of business.
• Focus: The impact on existing ESCs, the future of FPV (First Person View) market, and necessary actions for users.

Quick Overview of BLHeli

• BLHeli: Company making firmware for ESCs (Electronic Speed Controllers).
• Initial Market: Designed for helicopters, later dominant in multi-rotor market.
• Firmware Evolution:
  • BLHeli (oldest)
  • BLHeli_S
  • BLHeli_32 (current)

Why BLHeli Shut Down

• Reason: Complex geopolitical landscape; risk of BLHeli_32 being used in warfare.
• Regulations: European Union’s export control restrictions, specifically Norway's stringent regulations.
• BLHeli's Position: Cannot operate under these restrictions, leading to shutdown.

Impact on Current ESCs

• BLHeli_32 ESCs: Will keep working; firmware issues/bugs can remain.
• BLHeli_S ESCs: Open-source, continues to be supported and can be updated.

Major Concerns for Users

• Existing Firmware: If no need for updates, current ESCs will function without issues.
• BLHeli_32 Bugs:
  • Bug in 32.9: Quadcopter fails to rearm until power cycle post-disarm.
  • Risks: Critical for racers and freestyle pilots; potential for lost quads.

Future of FPV Market

• BLHeli_32 End: No more updates; no new hardware targets.
• Future Standard: AM32 firmware likely to take over.
• AM32: Already has some products, active development expected to increase.

Transition from BLHeli_32 to AM32

Necessary Steps

1. Check Compatibility: Ensure your ESC is supported by AM32.
2. Flash AM32 Bootloader: Detailed, complex process involving:
   • Identifying correct bootloader file
   • Using an STLink programmer
   • Physical connection to ESC programming pads
3. Flash AM32 Firmware: After bootloader, use software to load AM32 firmware.

Process Details (Example: T-Motor F55A Pro)

• Check Compatibility List: Verify ESC compatibility on AM32 target list.
• Prepare STLink Programmer:
  • Identify data, clock, ground pins on both programmer and ESC.
  • Connect wires and align with ESC programming pads.
  • Use STM32 STLink Utility software for flashing.
• Flashing Process: Details involve trial and error, ensuring correct file and connection.

Conclusion

• Actions Required: If ESC is working fine, no major immediate actions needed unless firmware update is required.
• Future ESCs: Shift to AM32, supported ESC models likely to increase.
• Support and Transition Assistance: Community and developers expected to focus on AM32.