About this project
The purpose of this project is to lower or decrease the volume of a radio through a remote control with Arduino and to visualize the value on an LCD display.
If is a button is pressed on an Arduino remote controller, the signal is received by an IR sensor and elaborated with Arduino Uno.
When vol+ or vol- is held down, the Arduino will turn a servo on clockwise or counter-clockwise, which will turn volume knob of my stereo. The LCD display will show the volume percent and when the volume is more then 80% will reveal, "too high!”
Arduino checks the servo motor through the pin11, the IR receiver with 10 and the LCD display through the pins from 2 to 7. Every component needs 5V except the pin 15 of the display, which uses maximun 4.2V and needs a resistence. The pin v0 (n°3) of the display connects to a potentiometer that regulates the brightness of the screen. The following scheme is made in Tinkercad.
The LCD display pins are connected with Arduino how in the code.