A project to make a musical instrument using the Arduino and Scratch for Arduino (S4A). The inspiration came from the theremin-like musical instrument project on s4a.cat
The version below uses a photoresistor. It is much simpler than the s4a.cat one and I have not used any LEDs either. I might add them in, as part 2 of the project.
A photoresistor (or light-dependent resistor, LDR, or photocell) is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. A photoresistor can be applied in light-sensitive detector circuits, and light- and dark-activated switching circuits. (Wikipedia)
The version below uses a photoresistor. It is much simpler than the s4a.cat one and I have not used any LEDs either. I might add them in, as part 2 of the project.
A photoresistor (or light-dependent resistor, LDR, or photocell) is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. A photoresistor can be applied in light-sensitive detector circuits, and light- and dark-activated switching circuits. (Wikipedia)