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I purchased a Global Cache iTach Flex WiFi to control my home theatre, lights and air-conditioner. Unfortunately these devices are all spread around the room like so: https://i.imgur.com/NxLWASJ.jpg and the wimpy little Flex IR "blaster" could only control one of them at a time when pointed directly at it. So I designed my own IR "hyper-blaster". This works exceptionally well. I can point it anywhere in the room and control any of the devices. I can now mount it out of the way on top of my projector. The IR LEDs are being driven at over five times their rated DC current but because this is only for a short pulse they can handle it .They're rated to much more than this (1.2A) for very short pulses (1us on, 10us off). I'm sure I can feel it heating up the room when in use It's still a bit of a prototype mess at the moment but I'll take some in-situ photos when I receive the final part - a USB power splitter cable to enable me to run it and the iTach Flex from the same 5V 1A plug pack. Construction details below if anyone else ever needs such a device: Note: I wanted some 0.33uF caps for the 37kHz bypass but they are huge so I ended up using three groups of three 0.1uF caps. Three on the front of the PCB and six on the back.