Visualizzazione dei post da Maggio, 2016

Toshiba Air Conditioner IR signal Reverse Engineering

Introduction I am in the process of installing some Toshiba air conditioners in my house, and am planning to control them remotely using OpenHab ( The first step to be able to control the air conditioner is to be able to emulate IR signals as they are sent by the AC remote.
In order to do that I have modified an open source IR library ( to add support for the Toshiba AC units.
Air Conditioning remotes work in a slightly different way than standard remotes as they usually transmit a packet containing all information related to the AC as opposed to, say, TV remotes where every keypress transmits only a single information like a button press. This is a typical packet sent from a Toshiba Remote (in Hexadecimal): #KeyHex# Bits1fan1F20D03FC0100400041F20D03FC0100400041144 it is a 72 bit packet that is transmitted twice (I imagine to rule out transmission errors), this is the binary representation:
11110010 00001101 00000011 11…