matlab error while trying to connect servo motor through arduino

if true
  a = arduino('com24', 'uno', 'Libraries', 'Servo');
s = servo(a, 'D8')
end

when i run this code i get an error Invalid pin format. Pin number must be a scalar integer.

i am using r2014a version.

Pls help me solve this error

[Walter Roberson]

What does a.AvailablePins show?

[Cristhian Joel Iquiapaza Velarde]

i have the same problem

Answer 1

[Duaner]

I had the same error when trying to read voltage output readVoltage(a,'A1') Invalid pin format. Pin number must be a scalar integer. after messing around i found this to work: readVoltage(a,1)

ans =

    4.9951

[carlos gómez]

you're the man. Thanks, usefull!

Answer 2

[PRIYA RANJAN PATTANAIK]

Try s = servo(a, 8)