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Photointerrupter module for Arduino and other microcontroller projects
This module has an optical slot device and 2 resistors fitted. The sensor will detect if an object is blocking the light between the emitter and receiver in the photointerrupter and can output a digital signal.
Barometric pressure sensor module for Arduino and other microcontroller projects
This tiny module has a BMP180 precision pressure sensor soldered on to a GY-68 breakout board to make it easy to use this amazing sensor. The BMP180 will give you accurate pressure data via the standard I2C protocol making it simple to add to your project.