So my 1st idea was I'll buy a new CIR device, but I couldn't find any.
My 2nd idea was get a new Motherboard, but that meant new CPU (Skylake i7-6700k) + RAM (DDR4) bcos there's no point getting a new Mobo if your not getting the latest and greatest, and I couldn't find any which turned on via IR.
My 3rd idea was build something :), this turned out to be ridiculously easy.
What would I need? Some way of automating pressing the button for 2 seconds, bcos that turns the PC on and off, and something to accept an IR signal.
I knew ATX PSU's have a 5v standby power supply, so IR relay would need to operate on 5v.
3 weeks later it arrives and I proceed to install it.
Please excuse the poor drawing, I don't have Visio installed on this PC.
- Test relay to ensure it works.
- Program your universal IR remote unless you want to use the included one. My Harmony Elite had a really hard time learning the IR command, and even when it did it wouldn't work the 1st time, but it eventually learnt the command.
- Set relay time to 2 seconds, shorter will turn it on, but may not turn it off. 4 seconds will force a power cut.
- If required extend the infrared phototransistor, black shiny thing with 3 pins. I extended mine by 30cm to have it sit outside the case.
- Either find 5v on a motherboard pin header (there's bound to be a couple) or get it directly from the ATX connector.
- 5v in to the IR relay power input.
- Run 2 wires from relay output NO + COM to the Power Switch pins on your motherboard.
- T join the case front panel power switch to the Power Switch pins on your motherboard so you can still use the normal power switch.
- Test. Apart from the Harmony learning command issue, it has worked flawlessly for the past 2 weeks and I like that it turns off instead of the Alt+F4 I used to do. I even use an Amazon Echo + Harmony + Yonomi to voice control it with; Alexa, turn PC on/off.
|Relay with extended phototransistor|
|T/Y join of front panel I/O + Relay NC/COM|
|The relay on top of the PSU in the case|