The TSL2581 sensor has two analog-to-digital (ADC) converters that integrate currents simultaneously from two integrated photodiodes. By changing the integration time, both low and high intensity of incident light can be measured. The sensor can be used with any microcontroller equipped with an I2C interface (eg STM32Discovery, Arduino or Raspberry Pi)
| pin | Description |
| VCC | Power supply voltage from 3.3 V to 5 V. |
| GND | System weight. |
| SCL | I2C bus clock line. |
| SDA | I2C bus data line. |
| INT | External interrupt first. |
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