Mikroelektronika d.o.o.
Tableau de proximité 17 Click
Tableau de proximité 17 Click
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Key Features:
- Faible consommation d'énergie, permet une détection de proximité supérieure, VCSEL IR 940 nm calibré en usine intégré, annulation de la diaphonie et de la lumière ambiante, architecture à double photodiode, fonction d'arrêt et d'interruption, et plus encore
- Basé sur le TMD2635, un module de capteur de proximité miniature à courte portée d'AMS AG
- Peut être utilisé pour des applications grand public et industrielles
- Utilise le bus I2C
La carte Click Board™ Proximity 17 est une carte complémentaire compacte qui contient une solution de détection de proximité à courte portée. Cette carte est équipée du TMD2635, un module de capteur de proximité miniature d'AMS AG. Le TMD2635 offre une mesure de proximité avancée dans un module de réseau optique à grille terrestre minuscule et fin qui intègre un laser à cavité verticale infrarouge à émission par la surface (IR VCSEL) de 940 nm étalonné en usine pour une réponse de proximité IR. Il offre également une annulation avancée du bruit de diaphonie grâce à une large gamme de réglages de décalage via une interface I2C numérique à mode rapide pour compenser la réflexion d'énergie IR indésirable au niveau du capteur. Cette carte Click™ convient aux applications grand public et industrielles.
La carte Click Board™ Proximity 17 est supportée par une bibliothèque compatible mikroSDK, qui comprend des fonctions qui simplifient le développement logiciel. Cette carte Click Board™ est livrée sous forme de produit entièrement testé, prêt à être utilisé sur un système équipé du socket mikroBUS™.
How Does The Proximity 17 Click Board™ Work?
The Proximity 17 Click Board™ is based on the TMD2635, a miniature close-range proximity sensor module from AMS AG. The TMD2635 implements a 940nm infrared VCSEL (Vertical Cavity Surface Emitting Laser) factory calibrated for IR proximity response, alongside a digital I2C serial interface. The proximity detection feature provides object detection (e.g., close proximity) by photodiode detection of reflected IR energy sourced by the integrated VCSEL emitter. The proximity engine also features a wide range offset adjustment to compensate for unwanted IR energy reflection at the sensor. The results are further improved by automatic ambient light subtraction.
The TMD2635 does not require a specific Power-Up sequence but requires a supply voltage of 1.8V to work correctly. Therefore, a small regulating LDO is used, the MAX8511, providing a 1.8V out of both 5V and 3.3V mikroBUS™ power rails. Also, it can be shut down through software with a low standby current, allowing the power rails to remain powered at all times.
The Proximity 17 Click Board™ communicates with MCU using the standard I2C 2-Wire interface with a maximum clock frequency of 400kHz, fully adjustable through software registers with a 14-bit proximity result stored in a PDATA register. Since the sensor for operation requires a power supply of 1.8V, this Click board™ also features the PCA9306 and SN74LVC1T45 voltage-level translators. The I2C interface bus lines are routed to the voltage-level translators allowing this Click board™ to work with both 3.3V and 5V MCUs properly. Also, it uses an interrupt pin, the INT pin of the mikroBUS™ socket, used for when an interrupt occurs to alert the system when proximity result crosses upper or lower threshold settings.
The Proximity 17 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library that contains easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
| Type | Proximity |
| Applications | The Proximity 17 Click Board™ can be used for consumer and industrial applications |
| On-board modules | TMD2635 - miniature close-range proximity sensor module from ams AG |
| Key Features | Low power consumption, enables superior proximity detection, integrated factory calibrated 940nm IR VCSEL, crosstalk and ambient light cancellation, dual photodiode architecture, shutdown and interrupt feature, and more |
| Interface | I2C |
| Compatibility | mikroBUS |
| Click board size | S (28.6 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout of the Proximity 17 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 | 5V | Power Supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| JP1 | VCC SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
PROXIMITY 17 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Proximity 17 Click | 3.3 | - | 5 | V |
| Wavelenght | - | 940 | - | nm |
| Operating Temperature Range | -30 | +25 | +85 | °C |
Software Support
We provide a library for the Proximity 17 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika 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 Proximity 17 Click Board™ driver.
Key functions
-
proximity17_get_int_pinThis function returns the INT pin logic state. -
proximity17_read_proximityThis function reads the raw proximity data. The higher the value, the closer the detected object is. -
proximity17_soft_resetThis function executes the defice software reset command.
Example Description
This example demonstrates the use of the Proximity 17 Click Board™ by reading and displaying the proximity data on the USB UART.
void application_task ( void )
{
uint16_t proximity;
if ( PROXIMITY17_OK == proximity17_read_proximity ( &proximity17, &proximity ) )
{
log_printf ( &logger, " Proximity: %urnn", proximity );
Delay_ms ( 1000 );
}
}
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.Proximity17
Additional Notes and Information
Depending on the development board you are using, you may need a USB UART click, 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 MikroElektronika compilers.
MIKROSDK
The Proximity 17 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
Tableau de proximité 17 Click
Frequently Asked Questions
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