italohdc / ESP8266-gibberish

📟 Doing gibberish stuff with an ESP8266

ESP8266-gibberish

Doing gibberish stuff with an ESP8266

For Arduino IDE: NodeMCU 1.0 (ESP-12E Module), 80MHz, 115200, 4M (1M SPIFFS)

ESP8266 Random

Read value from LDR on ESP8266 and send it to a broker using MQTT.

Code in Python subscribe to MQTT topic and send values to a GUI, which prints the given value and change the background color accordingly.

Libraries

In the ESP code:

#include <PubSubClient.h>

In the Python code:

import paho.mqtt.client

import tkinter

Errors found

• For some reason, when using Serial Monitor on Arduino IDE, the information sent through Serial.print("Lorem Ipsum") only start printing after some write was made (not sure yet if after any x characters or after x \n characters).
• Uploading firmware works better when using 1M Flash. (And also solves the above problem) 🤷‍♂️
• Couldn't convert int to char* (not String) using any bult-in method (like .toCharArray, String(parameter, sprintf(...))). Trying to use a separated function to handle it.
• On the above issue, note to future self: if you're using C, not py, don't use char*, use char [10].

If you think the code is a mess, remember it's just a gibberish and no important purpose is intented, it's just a hobbie 😅

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