Mikroelektronika d.o.o.
SKU: MIKROE-5647Ambient 22 Click Board
Ambient 22 Click Board
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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
- Based on the OPT3005 - single-chip lux meter from Texas Instruments
- Can be used for obtaining ambient light data in applications like display optical-intensity, industrial, or commercial lighting control
- mikroBUS: I2C Interface
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!
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.
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
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_pinThis function returns the INT pin logic state. -
ambient22_read_luxThis function checks for a conversion ready flag bit and reads the ambient light level in lux. -
ambient22_write_registerThis 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.
Ambient 22 Click Board
Frequently Asked Questions
Ask a Question-
Is The Ambient 22 Click Board™ easy to use?
Yes, 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!
-
What applications is The Ambient 22 Click Board™ suitable for?
The Ambient 22 Click Board™ is perfect for obtaining ambient light data in applications like display optical-intensity, industrial, or commercial lighting control.
-
Does The Ambient 22 Click Board™ reject infrared light?
Yes, the sensor offers extreme rejection to 850nm and 940nm infrared light over a wide angle of incidence, ensuring that you get precise ambient light data.
-
What is the measurement range of The Ambient 22 Click Board™?
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.
-
How does the sensor in The Ambient 22 Click Board™ measure light intensity?
The sensor 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.
-
What is the sensor used in The Ambient 22 Click Board™?
The Ambient 22 Click Board™ features the OPT3005 - a single-chip lux meter from Texas Instruments.
-
What is The Ambient 22 Click Board™?
The Ambient 22 Click Board™ is a compact add-on board designed to measure the intensity of visible light.