Flat, light buttons
#1
Posted 09 September 2010 - 06:57 AM
#2
Posted 09 September 2010 - 08:50 AM
#3
Posted 09 September 2010 - 12:28 PM
Today LED's, tomorrow, the world!!! Well, OK, maybe servos.
#4
Posted 09 September 2010 - 01:40 PM
#5
Posted 09 September 2010 - 01:41 PM
Yep, that's exactly what I mean. And, like you, I also struggled for a search term :-)Rememeber those "clicky" flat panels where the buttons were domed (almost like very low profile bubblewrap)? I haven't desribed it well but I'm sure you know what I mean. I think you need something like that. As for where to find them (or even what to google for)...
Thanks.
Mark
#6
Posted 09 September 2010 - 01:43 PM
You raise another issue I forgot - the surface on which they are mounted is not flat :-) It's basically a cylinder.Sometimes they are referred to as "momentary contact switches".
I think if you contact places like Mouser.com and Jameco.com (and probably Sparkfun.com) you can check out their online/offline catalogs.
Being that flat... you might get stuck with a surface mount... which is harder soldering.
Mark
#7
Posted 09 September 2010 - 01:57 PM
Can you drill a radial hole into it?You raise another issue I forgot - the surface on which they are mounted is not flat :-) It's basically a cylinder.
#8
Posted 09 September 2010 - 01:59 PM
Waterproof?You raise another issue I forgot
#9
Posted 09 September 2010 - 03:08 PM
Waterproof would be good (persperation) and also I would prefer some other way to securely mount the switch without drilling.Waterproof?
Thanks.
Mark
#10
Posted 09 September 2010 - 11:15 PM
#11
Posted 11 September 2010 - 11:25 AM
#12
Posted 13 September 2010 - 05:14 PM
#13
Posted 13 September 2010 - 06:21 PM
Thank you. Yes, that looks like a reasonable approach to me. What isn't so clear to me is where the logic resides to define a "keypress". This question will expose my lack of experience in this area (and, as I write, my lack of Netduino, which should be here by the end of the week!).I would have said force sensors would be the obvious choice here.. as they are basically paper thin, and weight nothing. Just calibrate them to fire over a certain 'pressure' of stroke.
See: http://www.google.ch... resistor (FSR)
As I understand, the force resistor will basically return a value (indirectly, at least). I presumably need to define the minimum force (resistance) to start the "click" and the maximum for when it ends. Is this the sort of logic I define myself in my own code (and what sort of event do I use to identify when the method I wrote should be checked)? Or can I define some sort of event handler that detects when the resistance changes (does it change by tiny amounts without any actual pressing or will it be at a "known" resistance unless someone actually presses)?
Or - he said wishfully - does the .Net Framework provide some sort of abstraction to all this so that I can identify the resister as my "key" and just receive key-up and key-down like events?
Thanks again.
Mark
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