Tag Archives: NodeMCU

ESP32 Arduino SSD1306 OLED: Drawing a QR Code

The objective of this post is to explain how to draw a QR Code on a SSD1306 OLED display, using the Arduino core on the ESP32. For this tutorial an Elecrow’s version of the OLED was used. The display can … Continue reading

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ESP32 / ESP8266 Arduino: Serial communication with Python

The objective of this post is to explain how to establish a Serial connection between a Python program and an Arduino program running on the ESP8266 and on the ESP32. The tests on the ESP32 were performed using a DFRobot’s ESP-WROOM-32 device integrated … Continue reading

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ESP8266: MicroPython support

The objective of this post is to explain how to use MicroPython on the ESP8266.

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ESP8266: Flash chip information functions

The objective of this post is to explain how to get some information about the flash chip of an ESP8266 board, using the Arduino IDE libraries functions.

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ESP8266: Connecting to MQTT broker

The objective of this post is to explain how to connect the ESP8266 to a MQTT broker, hosted on CloudMQTT.

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ESP8266: Get MAC address

The objective of this short post is to explain how to get the MAC address of the ESP8266.

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ESP8266: NodeMCU Pin mappings

The objective of this post is to explain how to use the ESP8266 library defined constants that have the correct mapping between NodeMCU and ESP8266 pins.

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