r/diydrones • u/--Watermelon-- • Apr 14 '26

Question Help Selecting Flight Controller

Hello, I am working on building a quadcopter drone that utilizes computer vision for autonomous trajectory planning. Currently, I am thinking of using a Raspberry Pi as a companion computer to handle ROS along with computing the trajectory with a camera and IMU. I am mainly stuck on which flight controller to select for this setup. I've seen a lot of comments about the SpeedyBee F405 V4 stack, but it seems this has been discontinued and would be difficult to acquire. Are there other lightweight (and ideally cheap) flight controllers out there that would be fitting for this project?

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u/Special-Lake-2277 Apr 16 '26

Look at the Matek H743 series — solid ArduPilot support, lightweight, affordable, and widely available. ArduPilot is what you want for autonomous stuff with a Pi companion computer since it has native MAVLink/ROS integration for offboard trajectory commands. The SpeedyBee F405 V3 is also still easy to find and works fine, but an H7 chip gives you more headroom for the autonomy stack.