Autonomous-Webserved-Tanktrack-Robot

Start a new project merging several skills in one task. This is my tank track robot controlled by a Raspberry Pi using a webservice. You can control the robot over dynamic website with webcam view. The RSPI also provides RPI-Wireless-Hotspot, so it is possible to connect directly with your smartphone.
An Arduino-Micro communicates to the RSPI over I2C and controls 8 servos. Also a battery state monitor is implemented. I decide to use standard AA Accus for powering with 2 rows a 5x 1,2 volt. A step-up/ step-down switching voltage regulator guaranteed 5 volt supply despite low battery.
See latest video on: https://www.youtube.com/watch?v=D2brukbh378

Updates:
03/12/18: Due to frequent questions: the servo is a MODELCRAFT BMS-410C. You can buy this in Europe at Conrad (https://www.conrad.de/de/modelcraft-standard-servo-bms-410c-analog-servo-getriebe-material-kunststoff-stecksystem-jr-404753.html). The servo is therefore interesting, because he has a receptacle for the axle in