IR Seeker V3

The IRSeeker V3 sensor detects IR signals and determines the direction to the source.
SKU: 45-2017

The IR Seeker V3 detects IR signals from the HiTechnic IR Beacon or IR ball and by using two detectors it calculates the direction to the signal source.

The relative signal strength from a left and right looking detector are combined to create approximate direction readings. These readings are simultaneously taken for both the 600Hz and 1200Hz beacon and ball frequencies. Direction readings to the left of center are negative, to the right of center are positive and dead ahead are zero.

The IR Seeker V3 I2C bus address of 0x38.

I2C Registers

Sensor firmware rev
Manufacturer code
Sensor Id. code
Not used
Direction data – 1200Hz
Signal strength – 1200Hz
Direction data – 600Hz
Signal strength – 600Hz
Left side raw data – 1200Hz (lsb:msb)
Right side raw data – 1200Hz (lsb:msb)
Left side raw data – 600Hz (lsb:msb)
Right side raw data – 600Hz (lsb:msb)



5 volts DC. 20 mA max.
Standard 4 pin connector
For connection to 4 pin I2C port
Logic voltage levels
Logic 0 – 0 volts, Logic 1 – 5 volts
Wiring standard
Pin 1 – black – Gnd
Pin 2 – white – I2C SCL
Pin 3 – yellow – I2C SDA 
Pin 4 – red – +5v
I2C address
I2C address change option
I2C bus speed
100KHz max.
Operating IR wavelength range
850 – 940 nm.
IR modulation
600 Hz and 1200 Hz
Internal sampling rate
30 samples per second
Typical maximum range
2.4 meters
Unit dimensions – LxWxH
32 x 32 x 19 millimeters
Mounting holes
24 x 24 millimeters square pattern
Unit weight
12 grams
Wire length
25 centimeters



Sensor Documentation

All the information you need about
Modern Robotics Sensors in one document.

PDF File

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