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Ambient 2 click carries TI's OPT3001 Ambient Light sensor. This is a small (2mm x 2mm) single-chip lux meter that measures only the visible part of the light spectrum from any kind of source (mimicking the way humans see light). It does so by filtering out 99% of infrared light. The measurement range of Ambient 2 click is from 0.01 Lux to 83k lux, and a 23-bit resolution. Communication with the target MCU is done through mikroBUS I2C pins, with an additional INT pin which can be used for triggering wake-up events (offloading the MCU). |
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Ambient click carries the Melexis MLX75305 IC. It's a CMOS integrated optical sensor that consists of a photodiode, a transimpendance amplifier, and an output transistor. The chip converts ambient light intensity into a voltage, using the mikroBUS AN pin for communicating with the target board MCU. The board is designed to use either a 3.3V or a 5V power supply. |
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Illuminance click carries a TSL2561 light-to-digital converter with a sensor that's designed to mimic the way humans perceive light. This makes it ideal for applications where ambient lighting conditions have to be measured (backlight power-saving on LCD displays for example). The sensor has two photodiodes. One sensitive to full-spectrum light, the other to infrared. The visible-spectrum is then deduced by using a formula. Illuminance click communicates with the target board through mikroBUS I2C lines, and uses a 3.3V power supply. |
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Light Click is the add-on board which features the PD15-22CTR8 PIN photodiode, providing an effective and easy way to measure ambient light intensity. It also features the MAX6106 voltage reference and MCP3201 ADC with SPI interface. Measured ambient light intensity is sent as an analog or digital signal to the main board microcontroller. Light Click communicates through mikroBUS SPI (MISO, SCK, CS) and AN lines. The PD15-22C-TR8 is a high photosensitive light sensor with fast response time. An SMD jumper allows the user to select whether the board will be powered with a 3.3V or 5V power supply. |
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LightHz Click is an accessory board in the mikroBus form factor. The board features the TSL230BR programmable light-to-frequency converter. The output can be either a pulse train or a square wave (50% duty cycle), with frequency directly proportional to light intensity. Device sensitivity is selectable in three ranges, providing two decades of adjustment. The full-scale output frequency can be scaled by one of four preset values. The board features a voltage selection SMD jumper which determines whether it will operate on 5V or 3.3V. |
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