AT Stalls When Turning
From MobileRobots Research and Academic Customer Support
Why does my AT stall or draw a high load on the batteries when turning?
If there is too much resistance to the motors while turning, the AT will automatically stall (and beep) to prevent damage to the motors. It may also draw a large amount of current from the batteries suddenly, causing ARCOS' measured voltage to drop and trigger a warning sound.
The AT skid steer system is designed to be used on a low-friction outdoor surface such as sand, dirt, or gravel. A high-friction indoor surface such as a carpet or even a solid floor is not the best place to run the AT frequently. One solution, however, is to use different tires with less grip (Contact Support for information on purchasing and configuring the robot), or cover the tires with clear smooth tape. Or create a "sand box" for your AT to drive in.