DJI Thumb Controller per Ronin The Thumb Controller is designed specifically for DJI Ronin series handheld gimbals. It provides a simple, intuitive interface for controlling the gimbal’s pan, tilt, and roll motions. The pressure-sensitive thumb stick and the easy-to-read OLED display give Ronin users more control than ever before.The Thumb Controller communicates with the Ronin-M via a preinstalled internal receiver. An external receiver (included) is needed when the Thumb Controller is used with the Ronin.