multifunctional use of buttons

[Richard]

Can anyone help me with designing in multifunctional use of push buttons on
a device I'm making. By that I mean not just one function per button but
pressing two buttons simulataneously triggers a different function to either
one button alone, pressing three simu, etc. Also holding down a button for a
few seconds causes a different function to a short press.

I assume the former is done with combinations of AND gates. But how to
implement the latter time delay?

 

[Leon Heller]

Can anyone help me with designing in multifunctional use of push buttons on
a device I'm making. By that I mean not just one function per button but
pressing two buttons simulataneously triggers a different function to either
one button alone, pressing three simu, etc. Also holding down a button for a
few seconds causes a different function to a short press.

I assume the former is done with combinations of AND gates. But how to
implement the latter time delay?

You'll find this much easier if you use an MCU.

Leon

 

[Costas Vlachos]

Can anyone help me with designing in multifunctional use of push buttons on
a device I'm making. By that I mean not just one function per button but
pressing two buttons simulataneously triggers a different function to either
one button alone, pressing three simu, etc. Also holding down a button for a
few seconds causes a different function to a short press.

I assume the former is done with combinations of AND gates. But how to
implement the latter time delay?

Are you using a microcontroller or discretes? With the former it's a piece
of cake, with the latter it's torture...

Costas