C:\Users\ASDF\AppData\Local\Temp\.arduinoIDE-unsaved2023117-14660-1k6co32.104uf\sketch_dec7a\sketch_dec7a.ino: In function 'void loop()':
C:\Users\ASDF\AppData\Local\Temp\.arduinoIDE-unsaved2023117-14660-1k6co32.104uf\sketch_dec7a\sketch_dec7a.ino:30:24: error: 'A1' was not declared in this scope; did you mean 'A0'?
30 | int val = analogRead(A1); // read input value
| ^~
| A0
exit status 1
Compilation error: 'A1' was not declared in this scope; did you mean 'A0'?