The build uses a Freeduino paired with an external GSM modem for communication and an LCD to display current ... [kohleick] connected two temperature sensors: one directly to the Freeduino ...

I made this project because I wanted a way to automatically control the speed of a DC fan ... RC filter at the output of the PWM pin on the Arduino board. I used an LCD shield to display the current ...

and an Arduino. There’s also an LCD display and a FET to control the heater. The idea behind a PID controller is that you measure the difference between the current temperature and the desired ...

To link a standard 16×2 LCD directly with the microcontroller, for instance Arduino, you would need atleast 6 I/O pins to talk to the LCD. However, if you use an LCD module with I2C interface, you ...