Mikroelektronika d.o.o.
UV 3 Click Board
UV 3 Click Board
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Overview
The UV 3 Click Board™ is an advanced ultraviolet (UV) light sensor with an I2C protocol interface. The Click Board™ carries a VEML6070 UVA light sensor designed by the CMOS process.
The UV 3 Click Board™ runs on either 3.3V or 5V power supply.
The UV 3 Click Board™ is an advanced ultraviolet (UV) light sensor with I2C protocol interface. The click carries VEML6070 UVA light sensor designed by the CMOS process. UV 3 click runs on either 3.3V or 5V power supply.
VEML6070 sensor features
VEML6070 is an advanced ultraviolet (UV) light sensor with I2C protocol interface and designed by the CMOS process. The active acknowledge (ACK) feature with threshold windows setting allows the UV sensor to send out a UVI alert message.
VEML6070 incorporates a photodiode, amplifiers, and analog/digital circuits into a single chip. VEML6070's adoption of Filtron™ UV technology provides the best spectral sensitivity to cover UV spectrum sensing. It has an excellent temperature compensation and a robust refresh rate setting that does not use an external RC low pass filter. VEML6070 has linear sensitivity to solar UV light and is easily adjusted by an external resistor.
Specifications
| Type | Optical |
| Applications | The UV 3 Click Board™ be used for UV measurement applications, sun exposure protection devices, display backlighting control, prototyping of wearables, handsets, and various consumer electronics based on received ambient or UV light |
| On-board modules | VEML6070 UVA light sensor |
| Key Features | Converts solar UV light intensity to digital data, excellent performance of UV radiation measurement under long time solar UV exposure |
| 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 on the UV 3 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 | ACK | Acknowledge pin | |
| NC | 3 | CS | TX | 14 | NC | ||
| NC | 4 | SCK | RX | 13 | NC | ||
| NC | 5 | MISO | SCL | 12 | SCL | I2C digital serial clock input | |
| NC | 6 | MOSI | SDA | 11 | SDA | I2C digital serial data output | |
| Power supply | +3.3V | 7 | 3.3V | 5V | 10 | +5V | Power supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
Jumpers and settings
| Designator | Name | Default Position | Default Option | Description |
|---|---|---|---|---|
| JP1 | Logic level | Left | 3.3V | Data in level Voltage Selection 3V3/5V, left position 3V3, right position 5V |
Software Support
Code examples for the UV 3 Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.
Code Snippet
This code reads the value of UV light from VEML6070 and sends it to the user via UART.
01 char uartTxt [20];
02
03 void systemInit()
04 {
05 Uart5_Init (9600);
06 Uart5_Write_Text ("rnInitializing...");
07 I2C2_Init( 100000 );
08 Delay_ms (100);
09 UV_3_initDriver (0x70,I2C2_Start, I2C2_Stop, I2C2_Write, I2C2_Read);
10 VEML6070_Init();
11 Uart5_Write_Text ("rnInitialized");
12 }
13
14 void main()
15 {
16 systemInit();
17
18 while( 1 )
19 {
20 Uart5_Write_Text ("rnUV value: ");
21 IntToStr (UV_3_read(), uartTxt);
22 Uart5_Write_Text (uartTxt);
23 Delay_ms (750);
24 }
25 }
Software Support
Code examples for the UV 3 Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.
Code Snippet
This code reads the value of UV light from VEML6070 and sends it to the user via UART.
01 char uartTxt [20];
02
03 void systemInit()
04 {
05 Uart5_Init (9600);
06 Uart5_Write_Text ("rnInitializing...");
07 I2C2_Init( 100000 );
08 Delay_ms (100);
09 UV_3_initDriver (0x70,I2C2_Start, I2C2_Stop, I2C2_Write, I2C2_Read);
10 VEML6070_Init();
11 Uart5_Write_Text ("rnInitialized");
12 }
13
14 void main()
15 {
16 systemInit();
17
18 while( 1 )
19 {
20 Uart5_Write_Text ("rnUV value: ");
21 IntToStr (UV_3_read(), uartTxt);
22 Uart5_Write_Text (uartTxt);
23 Delay_ms (750);
24 }
25 }
Frequently Asked Questions
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