Projects with Arduino
In this section you can find articles related to Arduino, ESP8266, NodeMCU, etc.
Gateway ESPNOW to MQTT over WiFi
A Gateway that allows you to receive signals sent with ESPNOW and forward them as MQTT messages.
Radio communication for ESP8266 and ESP32 with ESPNOW
ESP-NOW is a "new" radio communications protocol supported by the ESP8266 and ESP32, developed by Espressif, its manufacturer, which allows very fast data transmissions (and when I say very fast, I mean very fast). Its main objective is to replace Wifi to allow much lower power consumption and thus greater autonomy ... Read more
CO2 Gadget: Advanced CO2 Meter
CO2 Gadget is a firmware to create high quality CO2 meters, with optional sensors for particulate matter, temperature, humidity, atmospheric pressure and others that allow us to analyse the quality of the air we breathe. In this article I am going to introduce and show you how to install and use, the version ... Read more
CO2 Meter TFT Colour Display with TTGO T-Display Sensirion SCD30 - The CO2 Gadget
CO2 meter with colour display and Bluetooth connection. Take it with you everywhere and measure the air quality discreetly and at any time.
Sensirion SCD30 dual-channel NDIR CO2 Sensor
One of the best options. In some cases it is even the only recommended option.
CO2 meter on your mobile phone with ESP32 and Sensirion SCD30 sensor [BASIC VERSION] [BASIC VERSION].
CO2 meter with App for Android and iOS, via Bluetooth, official from the sensor manufacturer Sensirion
Sensirion SCD41 and SCD40 CO2 Sensors
This CO2, temperature and humidity sensor is much more than just a pretty face on a slim body...
Design of an ultra-low consumption CO2 meter
Ultra low power consumption meter with NDIR sensor and e-Ink display. Its design.
Experiments with ESPEasy (ESP8266) and low power - v3.0
Getting a low power consumption of our ESP8266 to use it on battery is the goal we want to achieve, and in this article we are going to continue the experiments.