The nano sensor interface presented below is a microcontroller-based universal sensor ... /* * Nano Sensor Interface * Arduino Nano ... mode and goes to sleep. When the Test button (D2) is pushed, it ...

The data is displayed on the Arduino Serial Monitor and transmitted to a mobile phone via Bluetooth for real-time monitoring. The MAX30100 sensor detects heart rate and SpO2 levels using infrared and ...

This project uses an Arduino Uno CH340G clone and a DHT11 sensor to build a compact weather station that measures temperature and humidity, calculates over ten derived environmental metrics, and ...

The serial communications is I2C and there’s a tiny optical sensor onboard along with an IR LED. Of course, you could send other keys than media controls. We wouldn’t mind going back and ...