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Topic starter
2025-04-26 1:28 pm
Hi All,
I tried the Keypad tutorial , link here , on my Arduino Uno R4, Wifi, with a 4x4 membrane switch Keypad. I get a stream of numbers, on the serial monitor, especially when I move it around. If I replace the Keypad.h by Marc Stanley, with the Adafruit_keypad, the problem goes away.
A friend of mine who is an EE said he suspects that it is taking longer for the pull-ups to occur and that adding a delay in the Keypad.h code might solve the problem.
Has anyone seen this problem before?
In advance, thank you for your help.
Regards,
PeterTrad
2025-04-27 5:24 am
"Libraries that use AVR-specific instructions are not compatible with the architecture of UNO R4 boards. However, some of these libraries have already been ported. For more details, refer to the UNO R4 Library Compatibility repository."
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