BME688: temperature, humidity, pressure, air quality, altitude
APDS9960: proximity, light, rgb, gesture sensing
SPK0641HT4H: sound intensity (can output decibels)
PCF8523: real-time-clock (provides accurate time)
Micro SD Card Holder: provides data logging ability
comp_gas = log(R_gas ohm » ) + 0.04 log(Ohm)/%rh * hum %rh » .
log(R_gas) + 0.04 * hum