Octopus Hunt Sensor(EF04002)
Introduction
Octopus Hunt Sensor is a sensor based on TCRT5000 photoelectric sensitive element.It can sensitively detect the infrared reflected signal.

Products Link
ELECFREAKS Octopus Hunt Sensor
Characteristics
The 3-pins ports is easy to plug and play. It can work with micro:bit in 3V.
Specifications
| Item | Parameter |
|---|---|
| SKU | EF04002 |
| Power Input | 3V-5V |
| Connector Type | Digital |
| Pins Definition | 1-Signal 2-VCC 3-GND |
| Response | Quick response with high sensitivity |
| Circuit | Simple |
| Stability | Stable and durable |
Outlook and Dimensions

Quick to Start
Materials used and connection diagram
Connect to the P1 port as the picture shows
Take sensor:bit for example

Program as the picture shows
Set the P1 port to a higher level to initialize the module. If any object is detected, the value is 0 and the the digital read pins is 0, the icon is shown on the screen. Or it shows a box.

Reference
Links: https://makecode.microbit.org/_2vF4fKc5rdoP
You can also download it directly below:
Result
If put 9mm away from the black objects,it shows an icon; while 9mm away from the white objects, it shows a box.