how to make variable tone resistor with photo resistor
THIS IS A MATERIAL NEEDED:
ARDUINO BORD
BREAD BORD
JUMPER WIRES
LEDs
1-220 OHMS RESISTOR
1-10K RESISTOR
1-PHOTO RESISTOR
1-PIEZO BUZZER/SPEAKER WITH RED AND BLACK WIRES
INTRUCTIONS:
SIMILAR WITH PT NO. 2, EXCEPT THAT YOU WILL USE PHOTO RESISTOR INSTEAD OF POTENTIOMETER . BE SURE TO UPDATE YOUR CODE.
RECREATE THE CIRCUIT THAT READS AN ANALOG INPUT PIN, MAPS THE RESULT TO A RANGE FROM 0 TO 255 AND USES THE RESULT TO SET THE PULSE WIDTH MODULATION (PWM) OF AN OUTPUT PIN AND ALSO PRINTS THE RESULTS TO THE SERIAL MONITOR.
THE CIRCUIT: