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Maker Reflect: Simple IR Reflectance Sensor


Elmwood Electronics has stopped accepting orders. This product might be available at PiShop.ca. Please check this blog post about our recent team merger.

Maker Reflect is a tiny reflectance sensor which consists of an infrared (IR) LED that transmits IR light onto a surface and a phototransistor measures how much light is reflected back. The output is in analog voltage - The more IR light is sensed by the phototransistor, the lower the voltage.

Typically this sensor is used in line-following robots, as the white surfaces reflect more IR than black surfaces. However, it is not limited to line-following, there are many more applications which can utilize the Maker Reflect.  For example: as an Edge/Border sensor in a Sumo robot, a wall sensor in a maze-solving robot, short distance object detector (presence sensor), sensor for rotary wheel encoder...the list goes on!

Measuring only (L)18.1mm x (W)8.4mm x (H)4.2mm (excluding the header pin), this tiny sensor can easily fit in the tightest space available on your robot. We  designed the sensor with the mounting hole is at the center, so that the sensor can be at the front-most position. This is especially important in Sumo robots!


  • Operating Voltage: 3.3V and 5V Compatible
  • Sensing Distance (Height): 1mm to 40mm (Vcc = 5V, Black line on white surface)
  • Output: Analog Voltage (White surface = lower voltage)

Example Application: Line Following Robot, Sumo Robot, Wall Following Robot, Short Distance Object Sensing, Sensor for Printed Rotary Wheel Encoder.



Packing List:


Collections: Cytron

Type: Sensors