QTRX-HD-31A Reflectance Sensor Array: 31-Channel, 4mm Pitch, Analog Output, Low Current Category_Linux Embedded/OLinuXino A13 ESP32 WROOM module on this

ESP32 WROOM module on this board features 16MB of flash memory

but also wifi and bluetooth module

To achieve its smaller size

which can be used for applications like face identification

QTRX-HD-31A Reflectance Sensor Array: 31-Channel, 4mm Pitch, Analog Output, Low Current Category_Linux Embedded/OLinuXino A13 ESP32 WROOM module on thispitch sensors size (mm) output max current optimal range LEDs board 4mm31 125. 0 16. 5 analogous 3. 5 mA 68 mA 10 mm This array of IR LED phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). It operates from 2. 9 V to 5. 5 V and offers dimmable brightness control independent of the supply voltage and separate controls for the odd and even emitters. In general, the closer the object, the higher the