Comments on: Retrieving Bitcoin Price Using ESP8266 WiFi Module

By: Noel

Noel — Wed, 01 Mar 2023 19:08:33 +0000

The board I just referred to is an ESP-07 by the way.
Thanks and sorry for the omission.
Noel

By: Noel

Noel — Wed, 01 Mar 2023 19:02:38 +0000

Hi Rui / Sara,

I have a project that has become quite complex and now needs the memory and processing capacity of an Arduino Mega 2560 R3. However, I have also been experimenting with ESP32 and found that I can transfer much of my data without cables. That hardware has many remote temperature sensors and controls remote relays.
I have also adapted and expanded your ESP-NOW tutorial and can send different data in each direction. This is basically implementing the function of the existing cables via WiFi. I receive 10 x DS18B20 readings as Temperature[10] in a struct one way and send bool Relay1, Relay2 etc., back the other way – all works well. Next will be 8 more sensors and 16 more relays to another ‘node’.
So now I want to transfer some of the Mega hardware sensors / relays out to individual ESP32s and deliver the data via WiFi.
Is there a way to add WiFi functionality to a Mega without the complication of using an ESP32? I have an ‘Open-Smart’ Serial WiFi V1.0 which is based on ESP8266 and has a serial interface. It looks to be functionaly the same as the ESP8266 WiFi you have used in this tutorial, so I could try that.
My last question is how do I find out how to send and receive via structs and esp-now functions like in the ESP-Now tutorial, with that arrangement. Presumably I need to get well into Lua? I am good at adapting and expanding code once I have a working sketch, but do not feel confident to do this from scratch. Are there any good guides / tutorials / resources that I could refer to ?
Many thanks in anticipation.
Noel

By: Rui Santos

Rui Santos — Mon, 08 Aug 2016 12:06:03 +0000

In reply to Gautam. It's not Python, it's Lua. I currently don't have a tutorial for the Arduino

By: Gautam

Gautam — Sun, 07 Aug 2016 03:20:48 +0000

How to to this using Arduino code and not Python?

By: Rui Santos

Rui Santos — Wed, 16 Sep 2015 18:17:45 +0000

In reply to Nicholas Fernandes.

Hi Nicholas,
I’m not sure what the problem is… It’s something missing in your request or the ESP is simply not connecting to the domain that you’re trying to connect to

By: Nicholas Fernandes

Nicholas Fernandes — Tue, 15 Sep 2015 21:35:05 +0000

Hi very good tutorial,
I am having some trouble, some times my ESP cant connect to the internet,
it says DNS retry 1, and keeps counting.
Does anyone has any idea on how to work this out?

Thanks best regards

By: Engirno

Engirno — Fri, 10 Apr 2015 19:58:02 +0000

Thanks a lot! Pls do. I need to have a wireless hotspot or similar before setting it up?

By: Amgad George

Amgad George — Tue, 07 Apr 2015 00:44:52 +0000

Hi Rui,
Just wanted to ask you is it possible to use more than one ESP8266 controlled by the same web server as I want to control power receptacles in various location using wifi.

Thanks,

By: Vitoa

Vitoa — Sun, 15 Mar 2015 17:03:05 +0000

O teu projeto publicado está muito bom, adiciona agr um display oled 0.96″ I2C
http://www.ebay.com/itm/271778513089?_trksid=p2057872.m2749.l2649&var=570606439260&ssPageName=STRK%3AMEBIDX%3AIT
Encontras mais barato, mas esse é perfeito para adicionares, tem um contraste otimo, até debaixo de luz intensa
Assim fica um módulo portátil para ver as cotações ou outras informações, como por exemplo meteorologia, indice radiação uv. etc

E já está disponivel uma nova versão do firmware build 20150311
Ainda n sei quais as optimizações, mas decerto que o firmaware é ainda melhor.

By: Rui Santos

Rui Santos — Sun, 15 Mar 2015 11:56:51 +0000

In reply to Vleis.

Hi Vleis,
What do you mean? How you flash your ESP8266 with AT commands again?
Here’s a tutorial that will help you do that: http://randomnerdtutorials.com/esp8266
Read the section “How to Update the firmware to the latest version”