Matek H7A3-SLIM Flight Controller - 2-8S STM32H7Enter the Matek H7A3 SLIM. Its thin, its fast, and its probably more capable than the pilot holding the transmitter. If you're building a long range cruiser or a racing rig that needs to cut through the air like a hot knife through butter (or a drone through a cloud), this is your huckleberry. Why You Want It Most flight controllers are built like they're expecting to survive a nuclear winter. The H7A3 SLIM is built for people who understand that