The DRV2605 from TI is a fancy little motor driver. Rather than controlling a stepper motor or DC motor, its designed specifically for controlling haptic motors – buzzers and vibration motors. Normally one would just turn those kinds of motors on and off, but this driver has the ability to have various effects when driving a vibe motor. For example, ramping the vibration level up and down, ‘click’ effects, different buzzer levels, or even having the vibration follow a musical/audio input.
This chip is controlled over I2C – after initialization, a ‘string’ of multiple effects can be strung together in the chips memory and then triggered to actuate in a row. The built in effects are much much nicer than just ‘on’ and ‘off’ and will make your haptic project way nicer feeling.
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