Error when i try to show some informations

[renatoramiro]

Here is my code:

require 'obd'
obd = OBD.connect '/dev/tty.OBDII-SPP', 38400
puts obd[:engine_rpm]
puts obd[:vehicle_speed]

/Users/renatoramiro/.rvm/gems/ruby-2.2.0/gems/obd-0.0.3/lib/obd/command.rb:10:in `to_i': wrong number of arguments (1 for 0) (ArgumentError)
    from /Users/renatoramiro/.rvm/gems/ruby-2.2.0/gems/obd-0.0.3/lib/obd/command.rb:10:in `format_result'
    from /Users/renatoramiro/.rvm/gems/ruby-2.2.0/gems/obd-0.0.3/lib/obd/connection.rb:26:in `[]'
    from first_test.rb:3:in `<main>'

[mgarciaisaia]

I'm having the same issue. It seems that nothing's being read from the device, so it fails when it tries to convert "" to hex.

I've run pry at a terminal, instanced the connection with obd = OBD.connect '/dev/tty.OBDII-SPP', cd obd to be in the context of that object, and doing read returns an empty string after the timeout value (2 seconds by default, but I've changed it and the delay changes.

I'm using a Bluetooth OBDII Scanner that works great with my Samsung S4, but I can't get it to work from a MacBookPro running OSX Mavericks (10.9.5).

[mgarciaisaia]

You'll have a better message explaining this if you use the code in #2