to sample the Pulse Sensor with consistent and regular timing. The code is setup to read Pulse Sensor signal at 500Hz (every 2mS). Pulse Sensor Arduino UNO uses Timer2 by default. Use of Timer2 ...

These displays use I2C or SPI to communicate, 2 to 5 pins are required to interface. Adafruit invests time and resources providing this open source code, please support Adafruit and open-source ...