In the world of wearable technology and health monitoring, PPG (Photoplethysmography) sensors have emerged as powerful tools for measuring various physiological parameters. Combined with the flexibility and versatility of Arduino microcontrollers, P…
In this Arduino electronics tutorial it is illustrated how to make laser based alarm system using Laser diode and LDR(Light Dependent Resistor). This can be useful to make security system for home usage or industrial application. It may also be use…
In this Arduino electronics tutorial, we show how Light Dependent Resistor(LDR) can be used as a light detector alarm with Arduino and a buzzer. LDR is a sensor whose resistance varies with amount of light falling onto it. So it can be used as a si…
This Arduino electronics tutorial illustrates how to use Photodiode as a light sensor with Arduino. When light impinges on the photodiode LED, current is produced and thereby voltage is generated which is captured by the ADC(Analog Digital Converte…
IR proximity sensors or Infrared sensors are useful in different kinds of projects. They can be used as obstacle detection in Robotics, for parts detection in automated conveyors in industrial production line, for intrusion detection, opening and …
