“If mBot doesn’t work out, why not just build a robot with Bluetooth connectivity myself?!”<\/strong><\/p>\n<\/blockquote>\n Thus, sparked by the parallel import trouble, a custom RC car project began, combining a Raspberry Pi Zero W, commercially available DC motors, and a 3D-printed chassis. Using a Raspberry Pi Zero W, I built an RC car that drives DC motors with an MX1508 (L298-equivalent) control board. By combining a chassis and wheels designed and output with a 3D printer and silicone rubber tires from a 100-yen shop, I was able to create a robust body while keeping costs down. The Bluetooth remote is read using the The pink mBot sold on Amazon appeared to be a parallel import, and its Bluetooth module did not have the Technical Conformity Mark. Using it as-is would emit illegal radio waves, so I am using it with the module removed.<\/p>\n \u2460 Build a robot equipped with Bluetooth connectivity using a Raspberry Pi Zero W. This time, we will implement approach \u2460.<\/p>\n Output the design data using a 3D printer to create the wheels and housing. The key point is to secure space on top of the housing to mount the Pi Zero W.<\/p>\nevdev<\/code> library, and smooth motor control is achieved via pigpio<\/code>‘s hardware PWM function.<\/p>\nThe Challenge<\/h2>\n
![\"mbot's](\"https:\/\/donguri3.net\/wp-content\/uploads\/2025\/05\/IMG_1875.jpg\")
<\/a><\/p>\nThe Solution<\/h2>\n
\n\u2461 Replace mBot’s built-in GUI-based movement assembly features with a visual flow editor like Node-RED.<\/p>\nMaterials List<\/h2>\n
\n
\nMX1508<\/a><\/li>\n<\/ul>\n\n
\nMotor<\/a><\/li>\n
\n<\/a><\/li>\n
\n<\/strong>Elecom VR Remote Controller<\/a><\/li>\nHardware Assembly<\/h2>\n
3D Printing the Chassis and Wheels<\/h3>\n