arduino uno with shield wifi

HELLO

I have 1 0-5 vdc analog sensor (5vdc power supply) that will connect to the analog terminals of my arduino uno.

I would like to add to my project a wifi conexion to send the data to an FTP server or another mode.

What wifi shield I should add (cheaper than the proposed adruino shield: adafruit example ADA 3653)

An ESP8266 module is probably the cheapest option.

...R

The ESP8266 module isn't a shield per se.
Though you can buy a prototype shield and solder the ESP-01 module to it.

The ESP-01 comes by default with AT firmware, so you may want to upload new firmware ( https://github.com/bportaluri/WiFiEsp ) to it to make easier to use with the Arduino.

What kind of sensor are we talking about? What accuracy do you need?

I’d just get a Wemos D1 mini, tack on an SPI ADC, and you’re done.

Pieter

PieterP:
What kind of sensor are we talking about? What accuracy do you need?

I'd just get a Wemos D1 mini, tack on an SPI ADC, and you're done.

Pieter

the esp8266 analog port on Wemos D1 is good. it can read to 3.3 V.

hamet:
I have 1 0-5 vdc analog sensor (5vdc power supply)

That could be anything, including a ratiometric sensor.
In that case the voltage input of an ESP is a poor choice.

Need to know which sensor is used to give meaningful advice.
Leo..

P.S. This is also cross-posted in the French part of the forum.