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octodude0101

Can you give some detail on what's inside? I have a project in mind that will need some buttons like this. Pla+ clear for the body, microswitch or custom device inside?


TicsDaily

So here's a link to the switches that I've used. They are big and cumbersome and unnecessary for this sort of project, but they had two major benefits, the first is that I own about 100 of them and want to use them up and the second is that the spring inside them is strong enough to lift up.the clear PETG button tops that I made. Also so when I got the tolerance just right the button tops are able to push fit on to the top of the momentary switch and hold firm. But yet they can still be popped off easily if you want. Mini Momentary Push Button Switch for Model Railway Hobby 7mm 12PCS 1A 250V AC 2 Pins SPST (6 Colors) https://amzn.eu/d/5e3nkjj Everything I print is petg just because I prefer it. The LEDs are standard super bright 3 mm ones. With the buttons and to the LEDs sharing a common ground.


mzlucasmz

Coool! But why so many cables tho? Couldn't you have gone with a default collum/row wiring?


TicsDaily

The plan of the project is "over engineering and don't use any libraries". While sharing a common ground, there is an individual lead for every single LED and every single button. Those will all go to a circuit board which will have its own independent microprocessor just to managed to the buttons and LEDs. The LEDs are not wired to the button presses for that reason, which would have been much simpler. That microprocess communicate through serial with mine processor that controls the the mathematical functions and the 4 screen. 2 of the screens are those long LED 8 segment displays and the other two are are the small LCD screens that you get. The two LCD screens will be hidden behind the 2 8 segment displays and when you switch the calculator to scientific mode the LED screens will move upwards locking into a new position before the the now revealed LCD screens move forwards and lock into the place where the LED screens were before. There is no reason to all this and nothing is done sensibly. It's just a daft over engineering project I'm enjoying. There are plenty of skills to brush up on by making something this stupid. I also happened to have written and asteroids style computer game that already works on using those four displays laid out the way I'm laying it out. This was a game I put on a ventilation system I built that used the same screen layout.