Wiring up a bank of switches is theoretically easy, but if you get it wrong the first time, you won't be alone.
Since I got this wrong the first time, I wanted to document it for myself, and also share it. A few objectives here include as little space used as possible, the fewest soldering connection possible, and as neat as possible.
I've no doubt that there are other methods, and I would appreciate feedback; this method worked for me.
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Array of 5 switches in a line. The strips underneath match the line of those switches.
The resistors are angled purely to save space. In the centre strip underneath, the strip is cut between each switch. |
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The switch is logic LOW normally, and logic HIGH when the switch is pressed.
As far as I am aware, the value of the resistor is not massively important; for example, both 10K and 220K should work.
| And a close-up picture of that first switch. All the switches have the same wiring as this. |
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| And underneath, we can see : Cut the central strip, between each switch. I use an electric drill bit, hand held and gently twisted. |
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