needed equipments: esp8266 or nodemcu sensors(gives analog output) diodes breadboard nstead of having multiple analog pins like other boards, the esp8266 only has one analog pin. We make it possible to read multiple analog values using just one pin. method: By switching sensors on and off, similar to multiplexing, we achieve this. In the first stage, we turn on one sensor, read the analog data from that sensor, then turn on the next sensor, switch off the first sensor, then receive data from the second sensor that was just turned on. circuit diagram: in this circuit diagram, you can see connections like figure 1. connections: Vcc of sensor1--> d1 (5) Vcc of sensor2--> d2 (4) grounds of sensors--> grounds analog outputof sensors--> diodes positive(+) side diodes negative(-) side--> A0 of esp8266