Pixhawk 248 Firmware File

Historically, ArduCopter 3.6.8 was a landmark release. Some users internally labeled builds from the 3.6.x branch as "248" due to the final digits of specific commit hashes or bootloader identifiers (e.g., bootloader version 2.48). In many online forums (RCDiscuss, ArduPilot Discourse), "Pixhawk 248 firmware" has become shorthand for ArduCopter 3.6.8-3.6.12 optimized for FMUv2 boards with 1MB or 2MB flash .

A defining feature of the 248 firmware is the utilization of a co-processor, the STM32F100 (IO MCU). This chip handles the direct PWM output for the main 8 channels, acting as a safety switch and fail-safe mechanism. The firmware ensures constant communication between the main Flight Management Unit (FMU) and this IO processor. pixhawk 248 firmware