CO2 Gadget Installation Guide: Web Installer, Binaries and Compilation
Complete guide to installing CO2 Gadget. One-click web installer, table of 13 boards with ‘INSTALL’, binary downloads, compilation with PlatformIO and troubleshooting.
Projects with Arduino
In this section you can find articles related to Arduino, ESP8266, NodeMCU, etc.
Real Solar Panel Power: Are AliExpress Sellers Misleading Us?
Have you bought a 1W or 2W mini solar panel and it doesn't perform as expected? Find out why lab specifications do not guarantee real performance.
Low-Power Solar Panels: MPPT is the Secret to Running Your ESP32 on Just 1W
We’ve seen lots of brilliant DIY projects using solar panels, but the reality is that energy efficiency is a real challenge. If you’ve tried to power an ESP32 or a Raspberry Pi with a small solar panel and failed, you’re not alone. This post complements our project on Enerlogic — Energy Wizard and … Read more
Controlling the electronic load with MOSFETs with an ESP32 - Basics
Learn how to control an electronic load with MOSFETs and an ESP32, improving your projects with automation, graphs and tests from the browser.
ESP32 Relay Board x8
Learn all about the ESP32 Relay Board x8: 8-relay control, easy programming and applications in home automation, irrigation and automation from scratch, with explanations and code.
Generating variable voltage with Arduino, ESP8266 and ESP32
Let's see how we can generate a variable voltage with Arduino, ESP8266 and ESP32 using different techniques.
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: High-Quality CO2 Meter with ESP32
CO2 Gadget is a firmware for creating high-quality CO₂ monitors that are every bit as good as commercial ones. Apple web interface, Home Assistant, MQTT, BLE, ESP-NOW, low power consumption, over 20 sensors. Open source and free.