HiLetgo 10pcs IR Infrared Obstacle Avoidance Sensor Module for Arduino Smart Car Robot 3-Wire Reflective Photoelectric for Arduino Smart Car Robot

Meets requirements.

Install on HO layout. These work great with a Radpberry Pi. Only issue was track lighting giving off IF Red and tripping the sensors. Change bulbs to LEDs and solved the issue. Fun working with them. Used to drive signals on the layout

Bendable IR detector/emittors. Good value for the money.

I mean...I don't know if they correct it after the customer who found the previous issue, man! They work ok, just short range. Nothing else to dislike abt these amazing little Ir sensors😎. Great for how much I paid for them. I tried to come up with my own built, man! It's time consuming if you are a guy like me, no special pcbs, oven, tools. Yeah, I love these little guys. They get the job done! I'll 100% tell you get them. I also made an interesting discovery that you can increase the range by adding 1 to 5 sensors in //. 3IRs was the ideal range for me, abt 24" range. You can try that, or maybe one has better range😁It's abt 7" for detection, which is great for my robot mower ege sensor.😁

Why did you pick this product vs others?:Cost. Sensor functioned, but has difficulty detecting dark/black objects (perhaps expected since it talks about following black/white path.) But, my use was to detect HO model trains and many are black. And the undersides of most of them are also black, so sensor really doesn't work for me.

Features:1, When the module detects an obstacle in front of the signal, the green indicator lights up at the board level and the OUT port keeps the signal output low, the module detects a distance of 2-30 cm,detection angle 35 °, adjusted clockwise adjustment potentiometer, distance can detect potential, detect increasing distance. Adjusted counterclockwise potentiometer, shortened detection distance.2, active infrared reflection detection of sensor, reflectance of target, therefore shape is critical detection distance.Minimum detection distance is black, white, maximum. Small objects away from small areas, large areas from ground.3, sensor module output port OUT port can be connected directly to the microcontroller. IO can also drive a 5V relay directly. Connection: VCC-VCC; GND-GND; OUT-IO4, Comparator LM393, Stable;5, Module can be 3-5V DC power supply. When powered on, red power indicator will be on;6 , Easy to fix if screw hole is 3mm;7, Board size: 3.2CM * 1.4CM8, Each module is shipped potentiometer adjusted threshold comparator voltage.PIN description :1 VCC 3.3V-5V External Voltage (5v and 3.3v MCU Can be directly connected to MCU)2 GND GND External3 OUT Small Board Digital Output Interface (0 and 1)

They were great with a fast response time

These are only able to detect objects that are within about 2 inches. If I turn up the sensitivity it gets stuck constantly detecting nothing.