I have written about using a Raspberry Pi as a Wi-Fi controlled IR blaster. Eventually I was left with just using my LogitechHarmony Hub to control IR devices in my living room. Recently I moved some things around and put my Winix Air Purifier in my bedroom. I no longer had the Raspberry Pi set up and purchasing another Harmony Hub for my bedroom is just too costly.
I purchased two Particle Photon devices that I was going to use for another project which ended up failing. Since they were just laying around, I decided to try and see if I can set them up to be little Wi-Fi controlled IR blasters. And luckily, after a bit of head scratching and cursing, I got it to work!