The VEML6075 is a sophisticated sensor that measures UVA and UVB light intensity, allowing for the calculation of the UV index, an important measure of the strength of ultraviolet radiation from the sun. This sensor is ideal for wearable devices, weather stations, or any application where monitoring UV exposure is necessary.
This is a battery-powered sensor system with Bluetooth communication, featuring an Arduino Nano for control, an MPU-6050 for motion sensing, and an HC-05 module for wireless data transmission. It includes a vibration motor for haptic feedback, a flex resistor as an additional sensor, and a piezo speaker and LED for alerts or status indication.
Open Project in Cirkit Designer
This is a sensor-rich embedded system with communication and display capabilities, designed for monitoring environmental parameters and controlling motors. It integrates alcohol and temperature sensors, vibration detection, GPS tracking, GSM communication, and an LCD for output, all managed by an Arduino Mega 2560.
Open Project in Cirkit Designer
This circuit connects an ESP32 Wroom Dev Kit microcontroller with a VEML6075 UV light sensor. The ESP32 powers the sensor and communicates with it via I2C, using GPIO 32 and GPIO 33 for the SCL and SDA lines, respectively. The purpose of this circuit is to enable the ESP32 to read UV index measurements from the VEML6075 sensor.
Open Project in Cirkit Designer
This circuit features an Arduino UNO that processes inputs from vibration and accelerometer sensors, controls relays for external device actuation, and communicates over WiFi. It includes a step-down converter for power management and an OLED display for data output. A red light indicator is used for visual status alerts.
Open Project in Cirkit Designer| Pin Number | Name | Description |
|---|---|---|
| 1 | VDD | Power supply (1.7V to 3.6V) |
| 2 | GND | Ground connection |
| 3 | SDA | I²C Data line |
| 4 | SCL | I²C Clock line |
| 5 | NC | No connection (leave unconnected) |
#include <Wire.h>
// VEML6075 I2C address
#define VEML6075_ADDR 0x10
// Register addresses
#define UV_CONF_REG 0x00 // Configuration register
#define UVA_DATA_REG 0x07 // UVA data register
#define UVB_DATA_REG 0x09 // UVB data register
void setup() {
Wire.begin(); // Initialize I2C
Serial.begin(9600); // Start serial communication
// Configure VEML6075
Wire.beginTransmission(VEML6075_ADDR);
Wire.write(UV_CONF_REG);
Wire.write(0x00); // Configuration settings (if any)
Wire.endTransmission();
}
void loop() {
// Read UVA and UVB data
uint16_t uva = readUVData(UVA_DATA_REG);
uint16_t uvb = readUVData(UVB_DATA_REG);
// Calculate UV index (simplified calculation, calibration may be needed)
float uvIndex = (uva + uvb) / 2.0;
// Print UV index
Serial.print("UV Index: ");
Serial.println(uvIndex);
delay(1000); // Wait for 1 second before the next reading
}
uint16_t readUVData(byte reg) {
Wire.beginTransmission(VEML6075_ADDR);
Wire.write(reg);
Wire.endTransmission();
Wire.requestFrom(VEML6075_ADDR, 2);
if (Wire.available() == 2) {
// Read two bytes from the sensor
uint16_t data = Wire.read();
data |= Wire.read() << 8;
return data;
} else {
return 0; // Error in communication
}
}
Q: Can the VEML6075 sensor be used with a 5V microcontroller? A: Yes, but a level shifter is recommended for the I²C lines, and the VDD must be within the 1.7V to 3.6V range.
Q: How often should the sensor be calibrated? A: Calibration frequency depends on the application's accuracy requirements and the sensor's exposure to harsh conditions.
Q: Is the VEML6075 sensor waterproof? A: No, the VEML6075 is not inherently waterproof. Additional protection is required for outdoor applications.