UVC Light Click Board™

Product Code: MIKROE-4177

How Does The UVC Light Click Board™ Work? The UVC Light Click Board™ includes uses two 0.7W, 275nm LEDs and one green LED that allow users to see approximate area where UVC light is shinning since these UV wavelengths are not visible to human eye and should avoid direct exposure to eye. The reason the UVC Light Click Board™ can be used as desinfection tool is that UV light in the range of 200 nm to 300 nm it is absorbed by DNA, RNA, and proteins. Absorption by proteins can lead to rupture of cell walls and death of the organism. Absorption by DNA or RNA (specifically by thymine bases) is known to cause inactivation of the DNA or RNA double helix strands through the formation of thymine dimers. If enough of these dimers are created in DNA, the DNA replication process is disrupted, and the cell cannot replicate. It is widely accepted that it is not necessary to kill pathogens with UV light, but rather apply enough UV light to prevent the organism from replicating. The UV doses required to prevent replication are orders of magnitude lower than required to kill, making the cost of UV treatment to prevent infection commercially viable.

The UVC Light Click Board™ is implementing TPS61169 LED driver with PWM brightness control to drive LEDs in series and MC34671 battery charger to allow charging of battery when Click board™ is inserted in mikroBUS™ socket, CHG LED will indicate the charging in progress and will turn off once the battery charging is finished. When PWR SEL jumper is repositioned to the right position you can use UVC Light Click standalone if no dimming is necessary or high mobility is needed. SPECIFICATIONS Type LED Drivers,UVC Light Applications Disinfection, chemical and biological analysis and many more On-board modules 3535UVC1W, TPS61169 Key Features Deep Ultraviolet LED, Flat View Angle, Peak Wavelength at 275nm Interface GPIO Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 5V PINOUT DIAGRAM This table shows how the pinout of the UVC Light 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 DIM Dimming NC 2 RST INT 15 NC NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC NC 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description PWR LD1 - Power LED Indicator PWR SEL JP1 Left Power Supply Voltage Selection 5V/Battery, left position 5V, right position battery CHG LD5 - Charging Status LED. CHG LED will indicate the charging in progress and will turn off once the battery charging is finished. TECHNICAL SPECIFICATION Characteristic Value Peak wavelength 275nm Spectra half-width 15nm UVC LEDs power dissipation 1.4W