| Electronics > Beginners |
| How to do this kind of button and where to source ? |
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| vibram:
Hi everyone, First post: i did my homework but was note successful at all. I would like to do my own keyboard such as following pictures I think this is a matricial keyboard, isn't it? But I don't find a tutorial to explain how to make it and where to source this kind of flat button. And same thing for the plastic cover, i find nothing about it. Maybe I'm not looking correctly but it doesn't seem to be widely spread in the DIY community. Any help appreciated Thank you |
| Ian.M:
Google: metal tactile click dome There are plenty of sources including major component distributors. Look for manufacturers' design guides (once you've found a supplier, as they are specific to an individual product) to get implementation details like recommended PCB footprint and finish, surface membrane material and thickness, and separator thickness and hole size. |
| vibram:
THank you IAn, this is exactly what I need Unfortunately, it doesn't seem to be wide spread for one time project (obviously due to cost and quantity...) but i will think about it |
| mleyden:
Matrix keypad, membrane keypad... Membrane keypads need tooling and are printed, requiring the manufacture of a number of layers. Getting one will be expensive unless you can buy an existing one and alter your housing? If you don't need the toughness of a membrane keypad, think about a matrix of push switches. If you do need to operate in a harsh environment, think about capacitive keypads: www.ti.com/lit/ug/tiduaz5/tiduaz5.pdf |
| vibram:
--- Quote from: mleyden on August 29, 2018, 02:05:40 pm ---Matrix keypad, membrane keypad... Membrane keypads need tooling and are printed, requiring the manufacture of a number of layers. Getting one will be expensive unless you can buy an existing one and alter your housing? If you don't need the toughness of a membrane keypad, think about a matrix of push switches. If you do need to operate in a harsh environment, think about capacitive keypads: www.ti.com/lit/ug/tiduaz5/tiduaz5.pdf --- End quote --- THank you I need to see how I can interact with my STM32 and more important, which surface I can put on ;) |
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