Pololu 4-Channel RC Servo Multiplexer (Partial Kit) MAX_import from which the CO2 concentration

from which the CO2 concentration can then be calculated

CIRCUITRY ONLY TUTORIALS:

Fully Arduino-compatible

Note: The Operating voltage of Romeo BLE Quad is 3

Pololu 4-Channel RC Servo Multiplexer (Partial Kit) MAX_import from which the CO2 concentrationThis compact four channel multiplexer of hobby radio control pulses allows for easy switching between two independent signal sources. An auxiliary channel selects whether the output comes from the master or the slave source. The activation threshold and direction are configurable. Surface mount components are pre assembled on the PCB, but through hole components are not installed and require soldering. Overview The Pololu 4 Channel RC Servo