Gimzo 2 custom On/Off button?

Check out this post where I added an external power and reset button: http://www.element14.com/community/community/designcenter/single-board-computers/gizmo2/blog/2015/01/28/gizmo2-adding-external-pwr-and-rst-buttons

Oh wow, so much great tutorials I'm having hard time finding

So you didn't use a resistor?

Is there any requirement for what button can be used. All I know is buttons have a maximum current rating, this shows how little my electronics knowledge is. But it's going to be fun programming the Gizmo after I get this figured out.

PS. Is that a 3d printed enclosure? That's another hobby of mine.

Yes,

mine is here: http://www.element14.com/community/community/designcenter/single-board-computers/gizmo2/blog/2015/01/26/gizmo2-3d-printable-enclosure

and Brian made an even better one: http://www.element14.com/community/community/designcenter/single-board-computers/gizmo2/blog/2015/01/31/gizmo-2-another-3d-printed-enclosure

Nice.

About the connection to the pins though, you didnt need a resistor?

Hi Mark,

It is your choice. It will function either way. Personally I would use it, because no components are perfect and it will look after your switch (provides a current limit - those small board switches might not handle much current), provides a bit of debounce (not that it should matter for a power-on circuit but anyway..)  (EDIT - also provides some protection if you accidentally connect the wire to an incorrect supply wire accidentally) - plus the original designers used it, so even if we cannot see their purpose it is harmless to add it.

But equally a body of engineers would just omit the resistor - there is not a lot of energy stored in that bit of circuit for example. So if it were a courtroom it would be a hung jury ; )

You can use any switch you like for the purposes of this button function, as long as it is a normally-open switch.

Hi Mark,

It is your choice. It will function either way. Personally I would use it, because no components are perfect and it will look after your switch (provides a current limit - those small board switches might not handle much current), provides a bit of debounce (not that it should matter for a power-on circuit but anyway..)  (EDIT - also provides some protection if you accidentally connect the wire to an incorrect supply wire accidentally) - plus the original designers used it, so even if we cannot see their purpose it is harmless to add it.

But equally a body of engineers would just omit the resistor - there is not a lot of energy stored in that bit of circuit for example. So if it were a courtroom it would be a hung jury ; )

You can use any switch you like for the purposes of this button function, as long as it is a normally-open switch.