Understanding ESC Firmware for Your FPV Drone
Understanding ESC Firmware for Your FPV Drone
When it comes to Electronic Speed Controllers (ESCs) for FPV drones, firmware plays a crucial role in determining their performance and features. In this article, we will explore the different ESC firmware options available and help you choose the right one for your needs.
1. SimonK and BLHeli: Laying the Foundation
SimonK and BLHeli are two of the oldest open-source ESC firmware options. While they are now considered obsolete and no longer used in modern ESCs, they deserve recognition for their contributions in shaping the FPV drone industry.
2. BLHeli_S: Second-Generation Firmware
BLHeli_S firmware is the second generation of the BLHeli firmware, specifically designed for ESCs with faster 8-bit "Busybee" processors. Although the official BLHeli_S firmware is no longer actively updated (as development shifted to BLHeli_32), custom firmware has emerged to support hardware that comes with BLHeli_S. These custom firmware versions, such as Bluejay, offer cutting-edge features and performance comparable to the latest BLHeli_32 ESCs.
3. BLHeli_32: The Latest Generation
BLHeli_32 ESC firmware represents the third and most recent generation of the BLHeli firmware. Designed for 32-bit hardware, it offers smoother, more precise, and reliable performance compared to its predecessors. BLHeli_32 has become a closed-source firmware, providing advanced features such as ESC telemetry and RGB LED support. This firmware is the go-to choice for those seeking a more future-proof ESC.
4. AM32: An Open-Source Alternative
AM32 is a relatively new open-source ESC firmware that serves as an alternative to BLHeli_32. It offers similar performance and features, making it a viable option for those looking for an open-source solution.
Choosing the Right Firmware
When deciding on an ESC firmware, the choice primarily comes down to BLHeli_S and BLHeli_32. Both firmware options support Bi-directional DShot, enabling RPM filtering in Betaflight. While BLHeli_S ESCs tend to be more affordable, enabling RPM filtering may require flashing third-party firmware, such as Bluejay. This process involves a bit more effort but can be a cost-effective solution.
BLHeli_32, as the newer generation, offers additional features like ESC telemetry and RGB LED support. However, these features do not significantly impact flight performance. If you prioritize future-proofing and advanced capabilities, BLHeli_32 is the recommended choice. On the other hand, if budget is a concern, BLHeli_S provides a reliable and cost-effective option.
In conclusion, choosing the right ESC firmware for your FPV drone involves weighing factors such as performance, features, budget, and ease of installation. Both BLHeli_S and BLHeli_32 offer excellent performance, so you can't go wrong with either option. Consider your specific needs and preferences to make an informed decision that suits your FPV flying style.