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Need help with wiring a keypad matrix interface

ComputerWizKid

ComputerWizKid

Golden Member
I bought a Matrix Orbital VK204-24-USB and I am making a semi-custom case for it (I found an old Point Of Sale display for cheap on eBay) anyway I will post progress when I get the pole display in. I want to make a keypad using momentary switches. The VK204-24 has a built in Keypad controller with six columns and four rows and the keypad Matrix Orbital sells has 15 Keys I want at least 10 keys (5 for cursor control and 5 for playback control) I need help wiring the thing as I don't understand Matrix Orbitals diagram I just want a basic diagram of which key to connect to what row/column and how to connect the buttons together
Thanks
 
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