Control Your Stepper & DC Motors with MOTORSHIELD- A Shield on Raspberry Pi
- 31 Jul, 2018
At some point of time in our life, as a kid or an adult, we have been fascinated by the robots or the similar machines that perform things that leave us spellbound. This fascination has led many enthusiasts discover and develop various tools and motors. Along with just the tools, the controller board, the motor driver board and the processor board are also required to mechanise the machine completely. There comes the Motor Shield which solves the purpose of making a 4-motor robot or a 2-motor robot. You can precisely control the movements and the motions of the robot.
Raspberry Pi Motor Shield is a Raspberry Pi based HAT used in controlling 2 stepper motors or 4 DC motors that lets you drive motors, controlling the speed and direction of each one independently. All you need is just connecting the Motor Shield, Raspberry Pi, and combined with the desired programming code, now it's all ready to start your robotic exploration: line tracking, obstacle avoidance, distance measurement, maze solver robot, video monitoring, WiFi/Bluetooth/ZigBee/Infrared remote control, etc. Mounting a camera on the top makes it a surveillance based robot car.
Motor shield HAT is designed to help you control your Raspberry Pi based Robotic project. This board lets you control up to 4 DC motors. It includes direction indicator LEDs to help you configure your motor output and connectors designed for plugging in IR and ultrasonic sensor modules to tell your robot about its environment. Enabled with IR Sensor and the Ultrasonic sensor, it becomes a perfect component for the object detection/avoidance, wall-following or light/line following robots.
The board is designed specifically for the Raspberry Pi 2, Raspberry Pi 3 and Raspberry Pi 3 model B+. Based around the L293D IC it is capable of driving 4 DC motors or 2 stepper motors. The L293D is a dual full bridge driver that can output up to 1A per bridge with supply voltage up to 24V.
- Dual H-Bridge IC L293D: For controlling up to for 4 DC motors or 2 stepper motors.
- Motor Input Supply Range: 6V – 24V
- Single Motor Output Current: 600mA or 1A peak current per channel
- On board LED arrow indicator for motor direction control
- 2 IR sensor Connectors with 3.3V level output protection
- 1 Ultrasonic Sensor Connector with 3.3V level output protection
- Python library for simplifying integration with the board.
- Python based motor shield GUI
Things you can learn:
- Controller based programming
- Precisely control motor movements
- Control stepper motors
- Make your own robots
- PWM based speed controlling of motors
- IR sensor and Ultrasonic sensor interfacing
Best place to buy
Sb Components Ltd is the official website for the PiTraffic (Traffic Light Shield) on a reasonable price. They also provide an easy interfacing based software so that you can just start playing with the motor shield without having to program the board.