Arduino: Building exciting LED based projects and espionage devices by Arduino. Building exciting LED based projects & espionage devices -2016

Author:Arduino. Building exciting LED based projects & espionage devices -2016
Language: eng
Format: epub
Publisher: Packt Publishing

Also, TSOP38238 is covered in the lead package epoxy frame, which acts as an IR filter. So, the disturbance light (DC light from a tungsten bulb, or a modulated signal from fluorescent lamps) does not reach the photodiode. This demodulated signal can be directly decoded by any microprocessor (in our case, Arduino). Because of this, apart from preamplifier, it ignores all other IR light unless it is modulated at a specific frequency (38 kHz).

This IC is as simple as an IC can get with its three pins. There are two power pins and one pin for the output signal:

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