Laser Break Beam Sensor

Laser break beam sensors are usually kind of cumbersome. They work by detecting an object breaking a laser beam - but you usually have to set up a laser on one end and a sensor on the other. Unless your sensor is big, it can easily get out of alignment.

Red wire
5VDC supply lead for the break-beam sensor; Adafruit states to connect 5VDC to the red wire and that 3V will not work.
Type · powerVoltage · 5VDC
Black wire
Ground lead; Adafruit states to connect Ground to the black wire.
Type · groundVoltage · 0V
Blue wire
Open-collector style output lead. Adafruit states to use a pull-up on the output pin; when the beam is broken, the blue output wire pulls down to ground, and with the pull-up it reads high when the beam is clear.
Type · signalVoltage · Pull-up voltage chosen by host; output pulls to ground when beam is broken

Pin	Position	Type	Function	Voltage
Red wire

Start wiring

5VDC · 0V

Verify supply voltage and logic levels before powering up.

Module pins: Red wire, Black wire, Blue wire. Schematik maps them to your board in the app.

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Pinout

Start wiring

Air quality

Temp and humidity

Environment sensors

Light and colour