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Small rectangular sensor board with JST connector and Grove cable attached

Seeed Studio

Seeed Studio Grove 80cm Infrared Proximity Sensor GP2Y0A21YK

SKU CH-CZKK-8T3XY

Measures 10 to 80 cm with 39 ms response and simple digital output via Grove connector

  • TypeSensors
  • Non-contact detection from 10 cm to 80 cm
  • 39 ms response time for fast obstacle sensing
  • Simple digital output simplifies microcontroller integration
  • Grove unified socket enables plug-and-play versatility
  • Compact 37 x 18.9 x 15.5 mm design fits tight spaces

Compact proximity sensor for microcontroller

The Grove 80 cm infrared proximity sensor detects objects without contact from 10 cm to 80 cm with a sensing angle of up to 30 degrees. It connects through a unified Grove socket for plug-and-play use with compatible boards. Response time is 39 ms, making it suitable for real-time detection in robotics, toys or water-conservation devices. The module measures 37 mm by 18.9 mm by 15.5 mm and weighs 9 g.

Detection range and headroom

The sensor operates reliably between 10 cm and 80 cm, covering near-field and mid-range proximity needs. At the maximum 80 cm distance the analog output voltage is 0.4 V, providing a usable signal for microcontroller ADC inputs. Average current draw is 33 mA at 5 V, so it runs from standard logic supplies without extra regulation. Operation is specified from -10 °C to +60 °C, with storage down to -40 °C.

Grove connector defines compatibility

The three-wire JST cable carries ground, VCC and a continuous digital output that requires no clock signal to start a reading. This makes the sensor straightforward to interface with any microcontroller that can read a logic-level pin. The included Grove cable adapts the 3-wire layout to the 4-wire Grove twig interface used on boards such as the Seeeduino 4.2. No other interface or protocol is supported.

Highlights

  • Non-contact detection from 10 cm to 80 cm
  • 39 ms response time for fast obstacle sensing
  • Simple digital output simplifies microcontroller integration
  • Grove unified socket enables plug-and-play versatility
  • Compact 37 x 18.9 x 15.5 mm design fits tight spaces

Specifications

TypeSensors

Questions about this item

Will the Grove 80cm Infrared Proximity Sensor GP2Y0A21YK work with my existing 5V microcontroller board?

Yes, it operates at 5V and draws an average of 33mA, making it compatible with common 5V boards such as the Seeeduino 4.2 through the included Grove cable.

How can I verify the sensor is detecting objects correctly once connected?

Power the module at 5V and measure the output voltage; at the maximum 80cm range it should read approximately 0.4V, dropping as objects move closer within the 10cm to 80cm detection window.

Does the package include everything needed to start, or must I buy a cable separately?

The box contains one Grove 80cm Infrared Proximity Sensor and one Grove cable, so no additional cable purchase is required for basic operation.

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