Sampling 5 sensors data with esp8266

Using Arduino Networking, Protocols, and Devices
1

I understand the esp8266 only has 2 gpio pins I could use to connect to sensors. Currently I have a simple setup where an esp01s samples data from a dht22. The esp01s is running on its own as a mcu.

I want to add a UV sensor and an mq sensor and maybe even a dust and light sensor. Would I need to move up to a nano or is there something I can do and keep my esp on its own?

2

Marciokoko:
I understand the esp8266 only has 2 gpio pins I could use to connect to sensors.

that's right but you can free rx/tx and use them as GPIOs as well

void setup() {


pinMode(1, FUNCTION_3);   //GPIO 1 (TX) swap the pin to a GPIO.

// pinMode(1,OUTPUT);


pinMode(3, FUNCTION_3);   //GPIO 3 (RX) swap the pin to a GPIO.

// pinMode(3,OUTPUT);

}

but make sure you have 100uF electrolytic cap. across RST and Gnd to make sure it(esp01) won't lock into a boot mode

3

use a esp8266-12e or a more beginner-friendly Wemos D1 or NodeMCU

12e Esp8266 Esp-01 Esp-01s Esp-07 Esp-07s Esp-12s Esp-12e Esp-12f Qfn-32 Chip Serial Port Wifi Wireless Module Wireless Transceiver - Integrated Circuits - AliExpress
NodeMcu http://s.click.aliexpress.com/e/ofu7mzE
Wemos D1 Page Not Found - Aliexpress.com

these come with more GPIOs than the Standard ESP8266.