https://www.techtronic.site/adeept-rasptank-wifi-wireless-smart-robot-car-kit-for-raspberry-pi-3-model-b-b-2b-tank-tracked-robot-with-4-dof-robotic-arm-opencv-target-tracking-video-transmission-raspberry-pi-robot-with-pdf/
Adeept RaspTank WiFi Wireless Smart Robot Car Kit for Raspberry Pi 3 Model B+/B/2B, Tank Tracked Robot with 4-DOF Robotic Arm, OpenCV Target Tracking, Video Transmission, Raspberry Pi Robot with PDF