The UNO bluetooth intelligent car is a single-chip learning and application development system based on the arduino micro-controller ATMEGA-328. It has 4in1 functions such as tracking, obstacle avoidance, infrared remote control and remote bluetooth. The kit contains a number of interesting programs that can extend the external circuit modules to raise the fun during developing mcu systems. The pre-drilled holes on the chassis frame area are a standard machine drilled format. All component modules may not align with the holes due to manufacturer variations. Custom holes will have to be drilled by the user as required.