300 RPM Straight BO Motor - Dual Shaft Battery Operated DC Motor

Prototyping and Engineering Tips from Robogears

• Voltage and Speed: While rated for 300 RPM at 6V, you can run this motor at 3V (lower speed/torque) or up to 9V (higher speed). Note that running consistently at 9V or higher will increase the wear on the plastic gears and significantly shorten the motor's lifespan.

• Wheel Selection: These motors are perfectly compatible with standard 65mm Yellow Rubber Wheels. Ensure the wheel's center hole matches the "Double-D" flat shape of the motor shaft to prevent the wheel from slipping during high-speed turns.

• The Importance of a Motor Driver: CRITICAL: Do not connect this motor directly to an Arduino or ESP32 pin. The motor draws more current than a microcontroller can provide, which will destroy the chip. Always use a motor driver like the L298N or L293D to control the speed and direction.

• Sensing Speed (ODOMetry): Use the second shaft to attach a slotted encoder disc. When paired with an infrared speed sensor (LM393), your microcontroller can count the pulses to calculate the exact distance traveled or maintain a perfectly straight path.

• Gear Protection: Plastic gears are susceptible to stripping if the motor is forced to stall (e.g., the robot hits a wall and the motor keeps trying to spin). Implement a current-sensing check in your code or use a physical bumper to stop the motor upon impact.

Package Includes

• 1 x 300 RPM Dual Shaft BO Motor (Straight)

Disclaimer: This motor is designed for lightweight hobbyist robots. Do not use for heavy lifting or high-torque industrial applications. Avoid excessive side-loading on the shafts, as this can crack the plastic gear housing. Always ensure the polarity is correct for the desired direction of rotation.