[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Ar… ...

The DHT11 sensor uses a custom single-wire protocol for communication. The basic process for reading data involves: Sending a start signal to the DHT11 sensor. Reading a series of pulses from the ...

This paper presents designing and implementing an Automatic room temperature control system using the Arduino and DHT11 sensor. The fan speed control system has also been proposed. Here, the user sets ...

Next, we define the constant DHT11PIN, which represents the digital pin to which the DHT11 sensor is connected. In our case, we designate pin 4 as the communication pin with the sensor. Then, we ...

Reading the temperature of your environment is pretty easy right? A quick search suggests the utterly ubiquitous DHT11, which speaks a well documented protocol and has libraries for every conceivab… ...