Beginner
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ESP32. How to use the WiFiManager library to manage WiFi connections

The WiFiManager library allows you to easily manage the Wi-Fi connection in your ESP32 projects. The WiFiManager library for ESP32 is under development. It ...

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ESP01. Get started with the Arduino or PlatformIO IDE. Which module to choose? Pinout

The ESP01 is an ESP8266 module installed on a miniature development board that has four expansion slots (GPIO). The difference between the versions lies in the ...

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ESP8266. How to read, write, erase the EEPROM. Calculate the space needed in bytes

The ESP8266 has a reserved memory area to simulate the internal Arduino EEPROM. Initially, this area was present to mimic the operation of the Arduino and to ...

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Get started with ArduinoJSON v6, Arduino library for handling JSON objects

The JSON format is used to organize, store and transmit data. Widely used in the IT world, it also finds its place in the world of micro-controllers. Among all ...

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ESP32. Get started with the SPIFFS.h library to read, write, modify files

SPIFFS (Serial Peripheral Interface Flash File System) is a lightweight file system suitable (among others) for microcontrollers with SPI flash memory such as ...

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Getting started with PlatformIO IDE on VSCode (Windows, macOS, Raspbian, Linux)

PlatformIO is an alternative to the Arduino IDE for developing connected objects or code for microcontrollers in a more general way. PlatformIO is not a code ...

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Pi Imager and the configuration wizard simplify the installation of Raspberry Pi OS (old Raspbian)

Installing and configuring Raspberry Pi OS (old Raspbian) has never been easier. No more downloading the system image and writing a configuration file. With Pi ...

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CloudMQTT test, free online MQTT broker. Control Domoticz with the JSON API

cloudMQTT is a free online MQTT broker for 5 simultaneous connections. In this tutorial, we will take the opportunity to use cloudMQTT to control a Domoticz ...

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Xiaomi Mijia Honeywell Smoke Detector Test with Domoticz, Emergency Notification with PushOver

In the previous article, we saw how to easily integrate Xiaomi Aqara accessories under Domoticz with Node-RED using the Zigbee sniffer of Zigbee2MQTT projects. ...

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ESP8266, Deep Sleep mode test, wake up with a PIR motion detector

The ESP8266 module has the deep sleep mode which allows to put it in hibernation to save the battery. You can wake up the module at regular intervals to make ...

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HC-SR04 (ultrasound) vs Sharp GP2Y0A02YK0F (IR) vs VL53L0X (Laser), which solution to choose for distance measurement with Arduino or Raspberry Pi

We will compare the three proximity sensor technologies that make distance measurement possible. HC-SR04 by ultrasound, Sharp GP2Y0A02YK0F by infrared and ...

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Test and Calibrate Sharp GP2Y0A02YK0F Asian Clone proximity Sensor

The Sharp GP2Y0A02YK0F Proximity Proximity Sensor allows distance measurements between 20cm and 150cm. It is quite easy to get an Asian clone rated A02YK0 for ...

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Retrogaming Retropie Mini Console on Raspberry Pi 3 with 3.5 ” HDMI LCD Touch Screen

In the last article, we tested the 3.5 '' LCD touch screen for the Raspberry Pi 3. This small screen is very well suited for carrying out a portable ...

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#Test LCD 3.5” HDMI touch screen (via GPIO) with acrylic case for Raspberry Pi 3 under Raspbian (480×320 to 1920×1080 pixels)

We are continuing our series of tests of different display solutions for the Raspberry Pi 3. Today, I propose to test the LCD 3.5 '' HDMI touch screen ...

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Which ESP8266 module to choose. Power supply, how to program it in C++ with Arduino IDE, MicroPython, ESP Easy

The ESP8266 was released in 2014. In just a few years it has gone from a simple WiFi module project for Arduino for a few euros to a full development board. ...

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Install the Pixel Desktop on Raspbian Stretch Lite. 10 essential software for the Raspberry Pi 3

If you regret having opted for the Lite version of Raspbian, here is a quick tutorial that explains how to manually install the Pixel desktop. No need to burn ...

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DIY Projects