Using MH-Z19B CO2 Sensor, DHT22, OLED Display, and ESP32 with Arduino This project combines the MH-Z19B CO2 sensor, DHT22 temperature and humidity sensor, and an OLED display with the ESP32 to measure ...

The MH-Z19B NDIR CO2 sensor should be preheat for 3 minutes to be stable. Start Arduino Uno R3 along with MH-Z19B NDIR CO2 sensorn to collect data (ppm) The first 2 or 3 data from MH-Z19B CO2 are not ...

Today, We will review the Cytron Maker Uno RP2040 development board combining the Arduino UNO form factor with the Raspberry Pi RP2040 microcontroller that makes it programmable with the Arduino IDE ...

Abstract: We connected $\mathbf{p H}$ sensor and solar cell into Arduino Board to control data transmission via red laser communication or popular known as visible light communication (VLC). The ...