Arduino: 1.8.5 (Windows Store 1.8.10.0) (Windows 10), Board: "Arduino/Genuino Uno" sketch_apr15a:20: error: redefinition of 'int R1' int R1 = analogRead(LDR1); // reading value from LDR 1 ^ C:\Users\JAY\Desktop\sketch_apr15a\sketch_apr15a.ino:16:5: note: 'int R1' previously declared here int R1…

Redifinition

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