The availability of powerful microcontrollers and standardized sensor modules is such that assembling ... In addition to the NodeMCU board, [Shyam] adds a DHT11 sensor and SSD1306 OLED display.

Behind the slick color display is a PCB with an unidentified microcontroller, power supply circuitry, a DHT11 environmental sensor, and a further small module which purports to be the CO2 sensor.

To build your very own IoT rain checking system, you will need a Raspberry Pi 3 Model B, a DHT11 Temperature & Humidity Sensor (4 pins), and a raindrop sensing board, which can be purchased for ...

First, we need a DHT11 sensor, and to check whether it works using one micro:bit. To do this, we must teach the MakeCode editor new tricks. Go to “Extensions”, type in “DHT11” and click on ...