I’m working on a project that needs the ability to control an HDMI switch programmatically. There are going to be a lot of these boxes so price of the components used is very important.
I’ve experimented with automatic HDMI switches but I can’t seem to get the level of control I need. I’m thinking about using a switch with a remote control but hardwire it to the GPIO.
The idea is I can send simulate the IR signal and be able to make the switch change inputs. I’m looking at using this specific HDMI switch:
Is this possible?
- the following might help: (1) Rpi3 LIRC Library and UART IR Transceiver Setup Problem Asked 1 year, 3 months ago Active 6 months ago Viewed 3k times raspberrypi.stackexchange.com/questions/103452/… Rpi3B+ GPIO Controlling Remote IR Controller Problem Asked 6 months ago Active 6 months ago Viewed 121 times raspberrypi.stackexchange.com/questions/112780/…. Cheers. – tlfong01 12 hours ago
- This HDMI switch DIY Q&A post might also be helpful: Rpi UART control IR Remote HDMI switch problem – Asked 1 year, 6 months ago Active 1 month ago Viewed 1k times raspberrypi.stackexchange.com/questions/99823/… – tlfong01 11 hours ago
Yes, it is possible.
You will need to connect an IR LED and some circuitry to switch it from a Pi GPIO (an IR LED needs more power than can be supplied by a PI GPIO).
If you search for IR blaster and Raspberry Pi you may find some ready made products and/or designs for ones you can build yourself.
Once you have this hardware you will be able to send the IR commands using software on the Pi.
- 1I should have been more specific, I’d like to skip over the sending of the IR signal and have a hardwire between the PI and the device. The HDMI switch has a plug for the IR receiver. I was thinking remove the IR receiver and wire it directly to the GPIO. The finished product would be housed together so using IR seems like more trouble that it’s worth – Kywillis 19 hours ago
- 1Do you know what the output of the IR receiver is? Without that (both data protocol / structure / hardware pin out / voltages etc) our guess is as good as yours… Even ‘posh’ audio systems have IR links in the same cabinet (B&O being a classic one for this in their older systems). Great thing about standards – there are so many of them to choose from… – Andyroo 19 hours ago
- 1@Kywillis: “
I should have been more specific“. I agree. Were you aware that you may edit your own question to correct errors? – Seamus 14 hours ago