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Arduino Uno HDMI Switch controller

shaggy4097

Hello everyone,

 

     I'm new to using an Arduino and have only been able to replicate projects I've seen on Youtube. What I'm trying to do is control these four three port HDMI switches with an Arduino Uno and make them act as a single nine port HDMI switch. I'd be connecting the three HDMI switches to each of the three input ports of the main HDMI switch. So essentially I'm thinking if I can control the main switch with every fourth button press to make it switch between HDMI devices and control the other three switches with every button press this should work. I also have a seven segment display I'd like to incorporate into the project to let me know which port I'm currently on. The HDMI switches have just a little momentary push button in the front of the unit to select between devices. I've listed the push button layout below and also attached photos of the devices I currently have. Thanks in advance for any and all help with this project.

 

1st press - Main HDMI Switch port 1 & other three HDMI Switches port 1

2nd press - Main HDMI Switch port 1 & other three HDMI Switches port 2

3rd press - Main HDMI Switch port 1 & other three HDMI Switches port 3

4th press - Main HDMI Switch port 2 & other three HDMI Switches port 1

5th press - Main HDMI Switch port 2 & other three HDMI Switches port 2

6th press - Main HDMI Switch port 2 & other three HDMI Switches port 3

7th press - Main HDMI Switch port 3 & other three HDMI Switches port 1

8th press - Main HDMI Switch port 3 & other three HDMI Switches port 2

9th press - Main HDMI Switch port 3 & other three HDMI Switches port 3

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  • Hi Kyle,

     

    I don't think it is that easy, because you need some feedback to know which switch connection is made on each box. Otherwise, it could get out of sync.

    There was a similar question a few days ago (not HDMI related, but related to how to push a button, and how to read an LED light status).

    You'd have to examine the circuit in the box to find the best way to do this. Usually you'll end up with something like a transistor to perform the button-press electrically, and some wires from the LEDs back into your Arduino. If there are voltage level issues, then some other interfacing circuit may be needed. The Arduino code is minimal. Anyway, maybe that's a lot of effort to get 9-way HDMI. It's hard to know because you have not mentioned the reason for this specific requirement. You can get an 8-way device with individual switching (i.e. no need for feedback if you use an Arduino) here: https://www.amazon.co.uk/Aten-VS0801H-8-Port-HDMI-Switch/dp/B002LDPVDU

    If you specifically need 9 and not 8, you could add a 2-way switch to it.

  • in reply to shabaz

    Hello

     

         I technically don’t need it it read the led indicators of each HDMI switch. If I power the HDMI switches and the Arduino at the same time then every time it’s turned on it’ll be reset back to port one and same with the Arduino. I also could buy that eight port switch but I figured using these switches I already own and maybe I could learn how to use an Arduino to make it work.

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  • in reply to shabaz

    Hello

     

         I technically don’t need it it read the led indicators of each HDMI switch. If I power the HDMI switches and the Arduino at the same time then every time it’s turned on it’ll be reset back to port one and same with the Arduino. I also could buy that eight port switch but I figured using these switches I already own and maybe I could learn how to use an Arduino to make it work.

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