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 standalone module on several websites (for example on Banggood), has the following features: [checklist] size: 0.96 inches resolution: 128×64 pixels controller: SSD1306 with I2C interface power supply: 3.3V – 6V…
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 sensor. The sensor For this tutorial I chose the HTU21D sensor by Te Connectivity. This sensor offers a good level of accuracy and…
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 – invented by Philips in 1982 – that allows two or more devices to communicate. The devices connected to the bus can…