Arduino interfacing with bolt (API problem)

I’m trying to build a LED intensity controlling using Arduino (by interfacing it to BOLT)
As it works on the principle of UART, by making use of API key

  1. As I m getting the error while trying to input Data on the led statement

please help me out asap

Hi @okarbhal,

Could you reply with where you got this documentation from?

This would help me understand what all steps you have done before the screenshot you provided.

BTW, you can control the intensity of an LED connected directly to the Bolt, using the pwm api call. Here is a link to the same. You do not need to interface an Arduino to the Bolt for this.