Matrix 1S Brushless Flight Controller (G4 3in1)Matrix 1S Brushless Flight Controller 3in1 Strip It Down, Power It Up Minimal wiring, max performance the Matrix 1S 3in1 Brushless FC trims the fat with a G473 MCU, ICM42688 gyro, and 12 A ESC all on a 1 mm board. ELRS receiver? You bring your own. Yes, we sell it. Yes, we know you'll crash it. No, we don't mind. Why You Want It You want clean builds without the bloat. The Matrix 3in1 skips the onboard RX but packs a powerhouse ESC, pro grade gyro,