28091 Parallax

UV Sensor User Manual Waveshare UV Sensor User Manual 1. Features Boost convertor chip SGM8521 Operating voltage 3.0V-5.5V Output type TTL level output Responsive 200nm-370nm wavelength Dimensions 21.0mm*13.0mm Fixing hole size 2.0mm Operating principle: This module has an UV sensor, GUVA, which is a ideal device for detecting the amount of UV ray without wavelength filter, since it is UV ray sensitive only. In other word, the wavelengths of 365nm(UV-A) and 320nm(UV-B) are the cut-off thresholds of GUVA. 2. Applications This module can be applied to UV ray detecting system, outdoors UV monitoring device, sterilizing lamp and etc. 3. Interfaces Pin No. Symbol Descriptions 1 AOUT Analog output 2 GND Power ground Positive power 3 VCC supply (3.0V-5.5V) 4. How to use We will illustrate the usage of the module with an example of UV ray testing by connecting a development board. Download the relative codes to the development board. Connect the module to the development board via a serial wire, then, power up the development board and start the serial debugging software. Here is the configuration of the connection between the module and the development board. Port STM32 MUC pin AOUT GPIOA.6 GND GND VCC 3.3V 1 UV Sensor User Manual Waveshare Port Arduino pin AOUT A0 GND GND VCC 5V Here is the configuration of the serial port Baud rate 115200 Data bits 8 Stop bit 1 Parity bit None Turn on a currency detector and illuminate its UV ray to the UV sensor. You will find that the serial port outputs relative data from the test. 2