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STM32 DRIVER STEPER MOTOR PORTABLE
Hence, the STSPIN230 is often chosen for longer lifetime applications, such as portable medical appliances, robotics, or more expensive toys. When the coils receive the electrical current and become an electromagnet, the magnetic field makes the rotor spin.īrushless DC, also known as BLDC, motors are lighter than brushed DC motors for the same power output, and don’t have brushes and a commutator in contact with each other, wearing out over time. However, instead of using brushes and commutators, coils are in the stator, which is underneath the rotor that houses the permanent magnets. This type of motor is similar to the previous one. The STSPIN230 is a Brushless DC motor driver. A Brushless DC Motor, Creative Commons License, image by Medvev The STSPIN240 is often found in toys or consumer appliances, such as toothbrushes or electric shavers. It is reliable, simple to control, and because its design is very straightforward, it often tolerates very harsh environments. This type of motor is inexpensive and fairly easy to implement. The fixed permanent magnets don’t move and thus are part of the stator. This causes the coils to rotate in what we call the rotor. The magnetic field produced pushes away the similarly polarized magnets and attracts the inversely polarized ones. The brushes electrically charge the commutator, which in turn charge the coils that become electromagnets, causing a reaction with the fixed permanent magnets placed around the motor. In very basic terms, brushes, often made of carbon, act as electrodes and conduct electricity to a commutator, a split ring that connects to coils found in the motor. The STSPIN240 drives a low voltage brush DC motor, which is one of the simplest motors. STSPIN : Driving a Wide Range of Motors A Brush DC Motor, Creative Commons License, original image by Wapcaplet They are the STSPIN240, STSPIN230, and STSPIN220.
STM32 DRIVER STEPER MOTOR DRIVERS
The three full-featured motor drivers belong to the STSPIN family of products.
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Aside from the amazing fact that this means the components are shorter than a grain of rice, it opens the door to smaller, and lower-consumption designs. ST recently broke the record for the world’s tiniest single chip motor driver by shrinking the packaging of three of its chips to 3 mm x 3 mm.