Re: Keypad for Raduino...?
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I don't think I'd use an analog approach to it. I'd use something like: ()
You can find code at:
Jack, W8TEE
On Sunday, June 24, 2018, 1:34:36 PM EDT, Mark Pilant <mark@...> wrote:
Hi Arv.
I used a similar keyboard for a Scalar Network Analyzer I built.? (Before I
found out about the PHSNA :-)? It turned out to work very well.? I did run
into a few issues worth mentioning.
Make sure you have some form of switch debouncing (software or hardware) as
part of the design.? I had both in my design.? Also, make sure you take into
account the resistor tolerances when determining the analog value for any
given key.? (Part of my SNA design was a set of calibration tasks, one of
which was the keypad.)
I'm building a uBitx with a TFT, and may include a soft keypad to augment the
encoder.? (If I can find the time... too many projects :-)
73
- Mark? N1VQW
BTW, feel free to look at the SNA code:
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