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HDMI Matrix 4x4, HDMI Matrix Switch Switcher 4 in 4 Out with IR Remote Control, Support HDMI 1.4, 1080P@60Hz, 3D, YUV 4:2:0 (Black) : Amazon.ca: Electronics
![I'm trying to identify key presses on a 4x4 matrix. I have it wired to detect when a button is pressed on each column but I can't figure out how to wire I'm trying to identify key presses on a 4x4 matrix. I have it wired to detect when a button is pressed on each column but I can't figure out how to wire](https://i.redd.it/bore62xkcxs71.png)
I'm trying to identify key presses on a 4x4 matrix. I have it wired to detect when a button is pressed on each column but I can't figure out how to wire
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4x4 HDMI 4K Matrix Switch/Splitter by OREI (4-Input, 4-Output) with Remote Control Supports UltraHD 4K@60Hz 4:4:4, HDR, YUV, HDMI 2.0, HDCP 2.2, 3D, 1080p, 18 GBPS - Downscaler (4K & 1080p Together) (
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4x4 4K HDMI Matrix Switch with Scaler - VM6404H, ATEN Video Matrix Switches | ATEN Corporate Headquarters
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