A motion capture circuit comprising a ribbon of a flexible material, a plurality of electrical connections forming a communication bus, a plurality of inertial measurement units (IMU's) electrically coupled to one another by said electrical connections along said ribbon, a microcontroller electrically connected with said plurality of IMU's, and a wireless transmitter adapted to wirelessly transmit data from said IMU's to at least one external data receiving and processing device, wherein said ribbon is elastically stretchable by at least 10%, said plurality of electrical connections being arranged along said ribbon in a crooked path.