ESP8266 Community Forum

Hi there!

Thank you for taking the time to read my post.

This is what I want to do: create a sensors/actuators network using ESP8266 modules.

I started using RPi <-> nRF <-> Arduino, but now I want to do this: RPi <-> ESP8266 <-> Arduino

The problem is, I don't know where to start

I read many tutorials, watch YT videos, but I can not make a decision on how the architecture should be or which part will be doing what. I just want to send commands to an Arduino board (turn on/off things, sense temp, etc.) and get a result back to the RPi using a web application accesible from inside my LAN or from the Internet.

Those are pretty much all the requirements.

Thanks for your help!

simply check how esp8266 communicates to arduino, and how esp will send data to a webservice..
and take out your nrf in the system, and replace with esp8266.
nothing complicated.

You can use raspberry as a mqtt broker and nodemcu - mqtt client for esp8266. Or
You can use raspberry as a webserver like thingspeak and esp as a Web client, or
You can use raspberry as a Web service provider and esp as well client. Mostly you don't need arduino.

Thanks for the replies guys!

I read about using just the ESP without the Arduino. The thing is, how do I connect sensors and actuators to it? I know it has 2 GPIO ports (I have the ESP-01 version), but I want to control 3 relays, sense temperature and AC voltage from one node. Is this feasible using just an ESP board?

In the case I can connect each individual sensor/actuator to one ESP, I need at least one DAC (for voltage sensor), right?

Otherwise, I need the Arduino to handle sensors/actuators connection and some logic and the ESP just for wireless communication with the RPi.