Haptic click carries DRV2605, a Haptic Driver for ERM and LRA vibration motors (acronyms stand for Eccentric Rotating Mass and Linear Resonant Actuator, respectively). The DRV2605 IC integrates an extensive library with over 100 haptic effects. These include audio-to-vibe features, which generate vibrations from the lower frequency range of the audio input (licensed version of ToushSense® 2200 effects from Immersion). The board also carries screw terminals for connecting said motors, as well as an audio interface (3.5mm jack). Haptic click communicates with the target MCU through mikroBUS I2C (SCL, SDA), EN (in place of CS) and PWM pins. The board is designed to use either a 3.3V or 5V power supply.