It's a arduino based robot able to play piano tiles game. Used Hardwares: 4 relay switches 4 22k resisters 4 LDR sensord 1 Arduino UNO board 1 breadboard 4 aluminium coins
Here first you need to check sensivity of your LDR sensor. for that use test_ldr code. and set value of ldr sensivity accordingly in main.ino file.
Then you need to test touch for aluminium coins. use test_touch code for it.
finally upload main.ino file and set the hardware and sensors as per shown in schemetics.
thank you.....
ShreySatapara