MIKROE-2510 Heart rate 4 click Mikroe MIKROE-2510 Heart rate 4 click carries the Maxim Integrated MAX30101 Heart-Rate Sensor. The click can run on either 3.3V or 5V power supplies. The Heart rate 4 click communicates with the target MCU over an I2C interface, with additional functionality provided by INT pin on the mikroBUS™ line.