How to set up Uno + esp8266 seperate module?

sekramer10 · December 1, 2016, 5:57pm

I want to control Neopixel leds by using Cayenne through a Chrome browser on a PC.

I have an Uno board and an Adicore Esp8266-01 wifi module board. I haven’t used the Esp8266 board before.

I have existing code and libraries that define led color animations that I currently run from the Uno. How would I set up my system to utilize Cayenne to provide control inputs to the sketch that controls the leds?

Thanks!

kreggly · December 1, 2016, 9:47pm

It is possible, however I need to test it better myself. It relies on the ESP having the NodeMCU/AT firmware.

Cheers,

Craig

sekramer10 · December 2, 2016, 3:28pm

Thanks. Would I just choose the WIFI shield sketch in this case? Or would I use the manual sketch? I assume I would wire the Rx and Tx of the module to the Uno.

kreggly · December 2, 2016, 10:03pm

Busy week for me.

I have a solution that compiles, and want to put together a how-to to use the esp8266 as a shield.

I hope to have time this weekend.

Cheers,

Craig

kreggly · December 3, 2016, 9:39pm

@sekramer10,

I can confirm that this howto works.

This code is again not yet officially supported by Cayenne, so let me know and the community can help you.

Note, when you upload to the UNO, you will want to disconnect the Arduino RX line otherwise you can’t program the UNO because the ESP and the IDE are both trying to drive the same line.

Cheers,

Craig

rsiegel · December 4, 2017, 9:18pm

Bumping this old thread to share that we’ve just provided support in our MQTT Arduino library for using ESP8266 as a shield We’ve done basic testing and works well. Give it a try for your project and let us know how it works out for you !

Here is the updated library on our github:

and the code can be found here:

github.com

myDevicesIoT/Cayenne-MQTT-Arduino/blob/master/examples/Connections/ESP8266Shield/ESP8266Shield.ino

/*
This sketch connects to the Cayenne server using an ESP8266 WiFi module as a shield connected via a hardware serial to an Arduino.

The CayenneMQTT Library is required to run this sketch. If you have not already done so you can install it from the Arduino IDE Library Manager.

Steps:
1. Install the ESP8266SerialLibrary.zip library via the Arduino IDE (Sketch->Include Library->Add .ZIP Library) from the Cayenne extras/libraries
   folder (e.g. My Documents\Arduino\libraries\CayenneMQTT\extras\libraries) to compile this example.
2. Connect the ESP8266 as a shield to your Arduino. This example uses the Serial1 hardware serial pins available on the Mega. You can also try 
   using a software serial, though it may be less stable.
3. Set the Cayenne authentication info to match the authentication info from the Dashboard.
4. Set the network name and password.
5. Compile and upload the sketch.
6. A temporary widget will be automatically generated in the Cayenne Dashboard. To make the widget permanent click the plus sign on the widget.

NOTE: This code requires ESP8266 firmware version 1.0.0 (AT v0.22) or later.
*/

//#define CAYENNE_DEBUG       // Uncomment to show debug messages
#define CAYENNE_PRINT Serial  // Comment this out to disable prints and save space

This file has been truncated. show original

mfajar_12 · September 7, 2018, 10:15am

sir i need help.

shramik_salgaonkar · September 7, 2018, 10:25am

Install the ESP8266SerialLibrary.zip library via the Arduino IDE (Sketch->Include Library->Add .ZIP Library) from the Cayenne extras/libraries folder (e.g. My Documents\Arduino\libraries\CayenneMQTT\extras\libraries) to compile this example

mfajar_12 · September 7, 2018, 11:30am

i already install ESP8266SerialLibrary.zip

but when i try #include still not such file or directory

shramik_salgaonkar · September 7, 2018, 11:35am

are there files present inside the folder?

mfajar_12 · September 7, 2018, 11:37am

yup, the CayenneMQTTESP8266Shield.h inside the folder

and still like this

mfajar_12 · September 7, 2018, 11:40am

this file inside ESP8266SerialLibrary Folder

sorry sir im new in arduino and cayenne,
in need connect to Cayenne platform for my Final Exam

adam · September 7, 2018, 3:40pm

Have you tried deleting all Cayenne libraries and reinstalling?

shramik_salgaonkar · September 10, 2018, 10:18am

@adam this issue was solved by doing the same thing you suggested but in PM.

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How to set up Uno + esp8266 seperate module?

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