Start Raspberry Pi with TV

[Hallonpaj]

Hello!

I have an old TV without HDMI CEC so it won’t startup when I’m starting the Pi. I’m going to connect a Sonoff as a remote switch to turn everything off when I’m not home, but when I turn the power back on the TV is in standby and to start it I’ll have to use a remote.

Is there a way to make the Raspberry Pi send a signal to the TV and wake it up?

[stuartiannaylor]

You sort of need to do this in reverse.

https://hackaday.com/2017/04/23/the-raspberry-pi-as-an-ir-to-wifi-bridge/

But yeah I would do some googling on the pi being a ir reciever / sender

https://www.hackster.io/austin-stanton/creating-a-raspberry-pi-universal-remote-with-lirc-2fd581

http://alexba.in/blog/2013/01/06/setting-up-lirc-on-the-raspberrypi/

[Hallonpaj]

There’s no way to make the Raspberry Pi send a button prompt or some kind of electric signal via the GPIO?

[sdetweil]

@hallonpaj sure, can do… but someone will probably has to write code (module) to make that happen…

[stuartiannaylor]

@hallonpaj Yeah of course it could you can get a 3.3v relay and its a 2 wire job to GPIO

But what are you going to wire it to?

What you do is put an IR Led on a wire and your Pi is now a universal remote for any device in range via LIRC.
Its a LED + resistor and two wires.

http://www.lirc.org/

Yeah a pi could with the right interface also do powerline comms but your TV can not so that would be a bit pointless
https://www.aliexpress.com/item/3-3V-5V-12V-24V-1-Channel-Relay-Module-Low-Level-Trigger-Optocoupler-Isolation-Relay-Module/32849672414.html?src=google&albslr=221170259&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&&albagn=888888&albcp=1706973087&albag=65008162765&trgt=296904914040&crea=en32849672414&netw=u&device=c&gclid=Cj0KCQiAzePjBRCRARIsAGkrSm7WKqheLphSYy6d32kQd-7D9xInwCfxCdYzlxHx6C493on_yqY7e-gaAvVHEALw_wcB&gclsrc=aw.ds

[Hallonpaj]

@stuartiannaylor

Took your advice and now it’s working perfectly. Big thanks for the help!

[stuartiannaylor]

I should of mentioned these things, doh!

https://www.aliexpress.com/item/Original-New-Broadlink-RM-Mini3-Black-Bean-Smart-Home-Universal-Intelligent-WiFi-IR-4G-Wireless-Remote/32647630434.html?spm=2114.search0104.3.23.2fe91284aQbOSk&ws_ab_test=searchweb0_0,searchweb201602_4_10065_10068_10130_10547_319_317_10548_10696_10192_10190_453_10084_454_10083_10618_10307_10820_10301_10821_10303_537_536_10902_10059_10884_10887_321_322_10103,searchweb201603_16,ppcSwitch_0&algo_expid=28da5b57-2352-4519-88f0-0f130177d914-3&algo_pvid=28da5b57-2352-4519-88f0-0f130177d914&transAbTest=ae803_3

But basically a Pi with an IR LED