Here is a smart muscle sensor that you can use to control robots and video games. The MyoWare 2.0 EMG Sensor has a compact design. It comes with a snap connector system, so you don’t need any soldering. It has EMG Envelop, Rectified EMG, and Raw EMG modes.
The MyoWare analyzes electric muscle activity and outputs an analog signal that represents how hard your muscle is being flexed. You can place it on your forearm, bicep, or calf. The MyoWare 2.0 ecosystem consists of Arduino, power, LED, and other shields.