IR infrared optic groove optocoupler sensor speed measurement module from 3.3V to 5V photo sensor switch for Arduino 5 unids.
Use: 1. +5 +5 is the positive input port of the power supply, which can be connected to a voltage of 3.3V ~ 5V
2. GND GND is the negative input port of the power supply. OUT OUT is the signal output port, which is connected to the E/S port of the single chip microcomputer. Generally, it is connected to an external interruption.
For other main control plates or top-level main control plates (such as Arm), if you need to configure the E/S port in input/output mode, you must set it in input/reception mode, otherwise you cannot use it. The 51 series MCU can be used directly, without the need to establish the input and output mode
Note: For Arduino, players must configure the port of E/S of the MCU in input/reception mode, otherwise it cannot be used.