Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | GP2Y0A21YK0F |
| Detection Range | 10 cm to 80 cm |
| Output Type | Analog Voltage |
| Supply Voltage | 4.5V to 5.5V DC |
| Current Consumption | Typically 30 mA |
| Response Time | 39 ms + 4 wait cycles |
| Connector Type | 3-Pin JST PH Connector |
| Dimensions | 29.5 x 13 x 13.5 mm |
| Operating Temperature | -10°C to +60°C |
| Application | Robotics, Obstacle Avoidance, Proximity Sensing |
Anonymous
Mar 24, 2026
Rating: 5/5
Perfect for my robot car project
This sensor works exactly as described. The analog output is very stable within the 10-80cm range. I used it for obstacle avoidance on my DIY robot, and the response time is quick enough to prevent collisions.
Anonymous
Mar 23, 2026
Rating: 5/5
Fast shipping and genuine product
Arrived quickly and was packaged securely. The connector pins were straight, and the sensor started working immediately upon connection. Highly recommend for anyone building autonomous vehicles.
Anonymous
Mar 12, 2026
Rating: 4/5
Good value, needs calibration
The build quality feels genuine. It took a little bit of code calibration to map the voltage to exact centimeters accurately, but once set up, it performs reliably. Just ensure you have a steady 5V supply.
Anonymous
Mar 10, 2026
Rating: 5/5
Great for university projects
Used this for my final year embedded systems project. It interfaced easily with the STM32 microcontroller. The range is accurate, and it handles ambient light better than ultrasonic sensors in my testing.
Anonymous
Mar 08, 2026
Rating: 5/5
Reliable Sharp original
I've bought many distance sensors, and these Sharp modules are the gold standard. This listing appears to be the original unit, not a cheap clone. The detection curve is consistent with the datasheet.
Anonymous
Mar 07, 2026
Rating: 4/5
Solid performance
Works well for short-to-medium range detection. Note that objects smaller than the beam width might not be detected consistently at the far end of the 80cm range, but that is expected physics, not a defect.
Q: Is the output digital or analog?
A: The GP2Y0A21YK0F provides an analog voltage output that varies inversely with the distance to the object. You will need an ADC pin on your microcontroller to read it.
Q: Can I use two of these side-by-side without interference?
A: Placing them directly side-by-side may cause optical interference. It is best to separate them by a few centimeters or stagger their operation timing in your code.
Q: Does this module come with the connecting cable?
A: Yes, this module typically includes a short 3-pin JST PH connector cable compatible with standard breadboard adapters.
Q: Can this sensor detect black objects effectively?
A: Infrared sensors can struggle with highly absorbent black surfaces. While it may detect them at closer ranges, the effective distance will be reduced compared to lighter colored objects.
Q: What is the minimum operating voltage?
A: The sensor operates reliably between 4.5V and 5.5V. We recommend using a regulated 5V supply for the most accurate readings.
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