Mikroe Smoke 2 Click

Mikroe Smoke 2 Click features the Analog Devices ADPD188BI complete photometric system for smoke detection using optical dual-wavelength technology. The module combines the dual photodetector with two separate LEDs and a mixed-signal photometric front-end ASIC. It's housed in a package that prevents light from going directly from the LED to the photodiode, without first entering the smoke detection chamber. It supports an SPI and I²C serial interface, although only one is allowed at any given time in the actual application.