Active or passive buzzer for Arduino, ESP8266, NodeMCU, ESP32, etc.
Everything you need to know about connecting a buzzer to a NodeMCU, ESP8266 or Arduino
ESP Easy
Connecting a BME280 sensor to ESPEasy
Temperature, humidity and atmospheric pressure easily and accurately.
CO2 on a giant screen for bars, restaurants, classrooms and the like.
Easily turn a tablet, or SmartTV into a display device
Easy CO2 Meter with ESP8266 (NodeMCU) and Senseair S8 sensor
Why mount a CO2 meter with another sensor when you have this one?
Connecting and controlling WS2812B LEDs to ESP8266 with ESPEasy
Easily connect and control LEDs with your ESP8266 with ESP Easy.
Easily connect an SSD1306 OLED display (or two) to ESPEasy
Using an OLED display with ESP Easy is very easy. Here are the step-by-step instructions with video
Comparison CO2 sensors MH-Z19B vs Senseair S8
Here you will find the differences and similarities between the MH-Z19B and Senseair S8 CO2 sensors.
A home CO2 meter with Wifi against the coronavirus: The CO2 Easy
Easily build your own quality CO2 meter in an afternoon
How do I go about creating a new circuit?
How is the design of a homemade circuit? Let's talk about the design and assembly of electronic circuits.