How much esp8266-12E i need for my project ?

Projects General Guidance
1

Hi,

i will use an rfid reader and a fingerprint sensor,

this two

So, how much esp8266-12E i need for this project ?

and does that esp is by best option to store and verifiy the data with the database hosted in a raspberry pi?

Appreciate any help

2

So, how much esp8266-12E i need for this project ?

You need exactly one of these.

The ESP is a good choice if you want to use Wi-Fi otherwise any Arduino will do that project.

3

Grumpy_Mike:
You need exactly one of these.

The ESP is a good choice if you want to use Wi-Fi otherwise any Arduino will do that project.

so the pins are enough for that work ?

4

Yes, the ESP12 module (as used on the NodeMCU and WeMOS D1 Mini) has 11 GPIO.

5

i think i will add a button and an oled screen, the small one for esp and maybe a small keyboard
does still one esp8266-12E enough ?

6

What part of yes are you having trouble with? There are no yes buts.

One button is one pin. An LCD is two pins if you use an I2C interface, or one extra pin if you use the SPI interface your RFID reader uses.

7

Start counting connections.