These are a set of programs being used to test programming with an Encoder and a Keypad.

These use code from both the Test Encoder and Test Keypad programs.

There are two types of keypad, both with 4 rows of keys. One sort have three columns and the other four columns.

I have code to support both types.

I also want to support direct pin access from an Arduino MEGA and I2C access from an Arduino UNO or NANO.

I have developed some codes for testing the different applications.

Most of these examples work with the IOAbstraction library.

Martin Da Costa has written a library for use with encoders. There are two versions in use here.

The first is a local copy of his files which has now been replaced by use of a library (encoderMD).

The use of the first version will not be continued. The examples are retained as they illustrate some features.

ALL the examples using EncoderMD from Martin Da Costa need to be updated.

I have been attempting to combine code for the encoder using Martin's library with a keypad connected using I2C.

So far I have had mysterious failures when using both.

Initial tests have been with a 4duino which has only one 5V output pin when I need two.

I am changing over to use a NANO with a base board with plenty of 5V and ground pins.

I now have two examples working with the NANO hardware. These are in other folders.

This allows the start pin for the keypad to be adjusted easily.

The original settung clashes with the pins used for the encoder.

Base example for the encoder library using IOAbstraction.

This combines the two codes.

It works although when the encoder is turned fast the number can be missing a digit. I have put in delay(5) in the encoder print to avoid missing digits.

This is the next step to move the keypad to I2C and see if that works. Yes it does.

I have put in delay(5) in the encoder print to avoid missing digits.

This moves the encoder to use the IOAbstraction event structure. This now works too.

I have put in delay(5) in the encoder print to avoid missing digits.

Example of matrix keyboard support for MEGA with a 3 by 4 Keypad built into IoAbstraction with encoder

This is now adapted to report the state of the key.

Example of matrix keyboard support for MEGA 3 by 4 Keypad built into IoAbstraction adding Martin's encoder

This runs Martin's encoder separately from the IoAbstraction code. I would like to integrate it.

This now runs Martin's encoder integrated in the IoAbstraction code using EncoderEvent.

It has also been modified for encoderISR to return true if there is a change. This is to help with multiple encoders.

This now runs Martin's encoder integrated in the IoAbstraction code.

I am now extending to two encoders.

Some previously global variables have to be now inside the EncoderEvent class so that they can be duplicated.

This version uses Martin's encoder library integrated in the IoAbstraction code.

This case also has two encoders.

This version uses Martin's encoder library integrated in the IoAbstraction code.

This case has two encoders accessible using an array.

This is a test for use with CANCMDDC.