Beginner

Tutorials adapted for novices and beginners in programming, home automation, systems. Some Topics: Arduino, ESP8266, Raspberry Pi

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. I propose to finish this series of article with the test of smoke detector Xiaomi Mijia ...

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 measurements and publish them on a server. The RESET pin (RST) is also used to wake the ...

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 VL53L0X by measurement of the flight time (ToF) of a laser beam. You will find a 3D printing ...

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 less than €4. There are several Arduino libraries that support different versions of the ...

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 retrogaming game console project. After testing Recalbox, I propose today to install Retropie. ...

#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 delivered with a clear acrylic case. The touch part is managed via the GPIO of Raspberry Pi. This ...

#Guide: 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. The ESP8266 is a true Arduino Killer. It has several inputs / outputs (GPIO), a WiFi ...

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 a new SD card for your Raspberry Pi.. Some commands in the Terminal are enough to install ...

Configure VNC on Raspbian to remotely access the Pixel desktop of the Raspberry Pi

The Raspbian distribution supports the VNC remote desktop. It is very simple to set up and activate and does not require any technical skills to do it. The Raspberry Pi is an ideal platform for learning programming and electronics. You can recycle ...

Publish the CO2 concentration of an MH-Z19 sensor to Domoticz, Arduino code compatible ESP32 / ESP8266

In the previous tutorial, we discovered and tested the MH-Z19 sensor which allows to measure the CO2 concentration without calibration. We saw how to read the CO2 concentration returned on the sensor PWM pin in MicroPython and then publish it on a ...

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