Mikroelektronika d.o.o.

SKU: MIKROE-5647

Ambient 22 Click Board

£15.00 GBP

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The Ambient 22 Click Board™ - Measure Visible Light Intensity

Experience precise and hassle-free light intensity measurement with The Ambient 22 Click Board™ - a compact add-on board designed to measure the intensity of visible light.

Precise Light Intensity Measurement

The Ambient 22 Click Board™ features the OPT3005 - a single-chip lux meter from Texas Instruments that transforms light intensity to a digital signal output that can be directly communicated via an I2C interface. The sensor's spectral response closely matches the human eye's photopic response, allowing for highly accurate readings.

Wide Range of Measurement

With The Ambient 22 Click Board™, you can make measurements from 20mlux up to 166klux without manually selecting full-scale ranges, thanks to its built-in full-scale setting feature. The sensor also offers extreme rejection to 850nm and 940nm infrared light over a wide angle of incidence, ensuring that you get precise ambient light data.

Suitable for Various Applications

The Ambient 22 Click Board™ is perfect for obtaining ambient light data in applications like display optical-intensity, industrial, or commercial lighting control. Whether you need it for personal or professional use, this Click board™ is a reliable tool that simplifies your work.

mikroSDK Compliant Library

The Ambient 22 Click Board™ is supported by a mikroSDK compliant library that includes functions designed to simplify software development. This ensures that you can start measuring light intensity right away, without worrying about complicated software.

Ready-to-Use Product

The Ambient 22 Click Board™ is a fully tested product that's ready to be used on a system equipped with the mikroBUS™ socket. Simply plug it in and start measuring light intensity - it's that easy!

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Product Description

How Does The Ambient 22 Click Board™ Work?

The Ambient 22 Click Board™ is based on the OPT3005, a single-chip lux meter from Texas Instruments, measuring light intensity as visible by the human eye. The device's precision spectral response and extreme IR rejection enable the OPT3005 to accurately meter light intensity as seen by the human eye regardless of the light source and any stray light from 850nm or 940nm active illumination. The IR rejection also helps to maintain high accuracy when this board is mounted under dark glass, especially with active 850nm or 940nm NIR illumination. This board is designed for applications that create light-based experiences for humans and is a preferred replacement for photodiodes, photoresistors, or other ambient light sensors with less human eye matching and IR rejection.

Ambient 22 Click Board™ inner

The OPT3005 measures 20mlux up to 166klux over a 23-bit effective dynamic range. It can be configured into an automatic full-scale, range-setting mode that always selects the best full-scale range setting for the lighting conditions. This mode frees the user from having to program their software for potential iterative measurement cycles and readjustment of the full-scale range until optimal for any given measurement. The OPT3005 can also operate continuously or in single-shot measurement modes.

The Ambient 22 Click Board™ communicates with an MCU using the standard I2C 2-Wire interface to read data and configure settings, supporting High-Speed mode. Also, the OPT3005 allows choosing the least significant bits (LSB) of its I2C slave address using the SMD jumper labelled ADDR SEL. It also possesses an additional interrupt signal, routed on the INT pin of the mikroBUS™ socket, indicating when a specific interrupt event occurs, such as detecting a meaningful change in light intensity.

This Click board™ can only be operated with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used as a reference for further development.

SPECIFICATIONS

Type	Optical
Applications	Can be used for obtaining ambient light data in applications like display optical-intensity, industrial, or commercial lighting control
On-board modules	OPT3005 - single-chip lux meter from Texas Instruments
Key Features	Low power consumption, precision optical filtering to match human eye, corresponds to a dark window because of high sensitivity, I2C interface, wide and flexible operational range, effective dynamic range with automatic gain ranging, and more
Interface	I2C
Compatibility	mikroBUS
Click board size	S (28.6 x 25.4 mm)
Input Voltage	3.3V

PINOUT DIAGRAM

This table shows how the pinout of the Ambient 22 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
NC	1	AN	PWM	16	NC
NC	2	RST	INT	15	INT	Interrupt
NC	3	CS	RX	14	NC
NC	4	SCK	TX	13	NC
NC	5	MISO	SCL	12	SCL	I2C Clock
NC	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

ONBOARD SETTINGS AND INDICATORS

Label	Name	Default	Description
LD1	PWR	-	Power LED Indicator
JP1	ADDR SEL	Left	I2C Address Selection 0/1: Left position 0, Right position 1

AMBIENT 22 CLICK ELECTRICAL SPECIFICATIONS

Description	Min	Typ	Max	Unit
Supply Voltage	-	3.3	-	V
Spectral Range	-	-	167	klux
Wavelength	850/940			nm

Software Support

We provide a library for the Ambient 22 Click Board™ as well as a demo application (example), developed using MikroE compilers. The demo can run on all the main MikroE development boards.

The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.

Library Description

This library contains API for the ww driver.

Key functions

ambient22_get_int_pin This function returns the INT pin logic state.
ambient22_read_lux This function checks for a conversion ready flag bit and reads the ambient light level in lux.
ambient22_write_register This function writes data to the selected register by using I2C serial interface.

Example Description

This example demonstrates the use of the Ambient 22 Click Board™ by measuring the ambient light level in lux.

void application_task ( void ) 
 { 
     float lux; 
     // Wait for a data ready interrupt 
     while ( ambient22_get_int_pin ( &ambient22 ) ); 

     if ( AMBIENT22_OK == ambient22_read_lux ( &ambient22, &lux ) ) 
     { 
         log_printf( &logger, " Ambient light: %.2f luxrnn", lux ); 
     } 
 }

The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.

Other MikroE Libraries used in the example:

MikroSDK.Board
MikroSDK.Log
Click.Ambient22

Additional Notes and Information

Depending on the development board you are using, you may need USB UART Click Board™, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroE compilers.

MIKROSDK

The Ambient 22 Click Board™ is supported with mikroSDK - MikroE Software Development Kit, which needs to be downloaded from the LibStock and installed for the compiler you are using to ensure proper operation of mikroSDK compliant Click board™ demo applications.

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Ambient 22 Click Board

Ambient 22 Click Board