Often used for train/bus passes
Infrared is sent out by the sensor which bounces off objects
K-Thermocouple- to-Digital Converter (0C to +1024C)Temperature sensor (MAX6675)makes use of the Maxim MAX6675 K-Thermocouple to digital converter IC to provide a microcontroller compatible digital serial interface (SPI compatible) for giving an accurate temperature compensated measurement of the supplied K-Type thermocouple sensor
Current Sensor ACS712 (AC or DC) 5A sensing and controlling current flow is a fundamental requirement in a wide variety of applications including
Recommended operating voltage: +5V
Infrared Object Detection Sensor MMA8452Q Often used for train/bus passesIntroduction: This Infrared obstacle object detection sensor is super easy to use. It comes with on board potentiometer to adjust the sensitivity. The output is digital signal so it is easy to interface with any microcontroller such as Arduino Uno,Mega, Leonardo, Zero, 101, even the Raspberry Pi or Raspberry Pi Zero. And of course it is also compatible with all other controller boards . This Infrared sensor offers simple, user and fast obstacle