Sending Infrared signal to TV - not working

The IR page you linked also mentions a whole bunch of other stuff you need - specifically analogWrite on the other pin the IR LED is connected to.

There are a few posts on the ESP8266 forum about this already, but basically the code given won't work on ESP8266 because there's no way of getting a 40kHz square wave at the same time as executing digitalPulse.

The solutions for you would be to:

• Use a proper Espruino device.
  
• Set up a 555 timer to give you a 40kHz signal as well.
  
• Build a new array that contained a series of 40kHz pulses, instead of your current ~1-2ms pulses - see the attached image from eevblog
  
  

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