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ESP32 (28) – MQTT and SSL

ESP32 (28) – MQTT and SSL

luca December 4, 2017 9

Security is a very important aspect for MQTT brokers. In a previous article you’ve already learned how to implement authentication and authorization. The weakness in that configuration was that credentials were transmitted in cleartext; it was therefore

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4zerobox, industrial module by italian startup with ESP32 heart

4zerobox, industrial module by italian startup with ESP32 heart

luca November 20, 2017 0

With great pleasure, I want to introduce you today the project of an Italian startup: 4zerobox. 4zerobox is a module, DIN-rail mountable (9 modules), designed to complement or replace a classic PLC in industrial automation applications.

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ESP32, the new Wemos Lolin32 LITE

ESP32, the new Wemos Lolin32 LITE

luca November 18, 2017 8

On my blog I’ve already posted about the development board Wemos designed for the esp32 chip and that, on many webstores, you can find boards that “copy” the Lolin32 name but are instead clones of

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ESP32 (27) – GPS

ESP32 (27) – GPS

luca November 13, 2017 8

In today’s post I’ll show you how to interface the esp32 chip to a GPS receiver to receive the actual position, speed and more… GPS receiver On the Internet and in electronic stores you can

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ESP32 (26) – UART

ESP32 (26) – UART

luca November 6, 2017 4

UART (Universal Asynchronous Receiver-Transmitter) is an hardware peripheral which allows serial, asynchronous communication with configurable data format and speed. The UART interface usually works at logic level: the electric signals are generated by an external

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ESP32 (25) – Oled display with U8G2

ESP32 (25) – Oled display with U8G2

luca October 30, 2017 4

If you read my post ESP32, Wemos or not to Wemos you know that I brought a development board, that happened to be a D-duino-32 clone, with an ESP-WROOM-32 module and a 0.96″ oled display. This display, available also as a

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ESP32 (24) – I2C a pratical example with HTU21D sensor

ESP32 (24) – I2C a pratical example with HTU21D sensor

luca October 13, 2017 3

In my previous tutorial I explained how to use the I2C driver included in the esp-idf framework to communicate with I2C devices. Today I’ll show you a pratical example: the use of a temperature/humidity

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ESP32 (23) – I2C basic

ESP32 (23) – I2C basic

luca October 9, 2017 4

In today’s tutorial I’ll explain you how to interface the esp32 chip to external devices (sensors, displays…) using a very widespread bus: the I2C bus. I2C I2C (pronounced i-squared-c) is a serial communication bus –

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ESP32 (22) – SPIFFS

ESP32 (22) – SPIFFS

luca September 30, 2017 9

In some of the previous tutorials, I explained how to include “external” items (images, SSL certificates…) in your program thanks to the embedding binary data feature of the esp framework. Today I’ll show you how to use part

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ESP32 (21) – Mutual authentication

ESP32 (21) – Mutual authentication

luca August 25, 2017 17

After having published my post about how to implement a webserver on the esp32 chip, some readers correctly warned me that everyone, once connected to the wifi network, could control the relay and asked me how

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