Hi I'm new with Arduino and Esp12e. Is it possible to connect one analog pin to multiple MQ gas sensors?. Can someone help me for My struggling
Do a site search on 'analog multiplexer'.
Analog multiplexer is one option; an external ADC such as the ADS1115 is another - the latter works over I2C, offers four analog channels, and you can connect a number of them on a single I2C bus for even more analog inputs.