CB1 Blockly is a visual programming console based on Blockly with capability to control some accessories. The user can do visual programming on this app, and then the user-program can send command to the accessories to make motor spin, buzzer sound or LED flash. By assembling CB1 Blockly accessories with some smart bricks, the user may build some fancy gadgets such as robot arm or even a MicroMouse!. We hope CB1 Blockly bring children fun and help them learn logic.